[Research Themes]

1. Semiconductor Researches, 2. Magnetic and Magneto-Optical Studies, 3. Superconductor Researches

[Members]

Members


(1) Growth of Crystals and Thin Films of Compound Semiconductors and Their Device Applications
Ternary chalcopyrite semiconductors have been attracting attentions as new functional materials.
In this laboratory, we have been working with crystal growth and optical and ESR studies of a series of chalcopyrites such as CuAlS2, CuGaS2, CuInS2, CuAlSe2, CuGaSe2, and CuInSe2.
Particular emphasis was given to basic studies to characterize physical properties of impurities and defects in these materials. We have almost completely clarified the electronic structures of Fe and other transition atom impurities by optical and ESR studies.
We are also working with low temperature deposition technique of CuInGaSe2 films by ionized cluster beam deposition.

Recent Topics We started researches on II-IV-V2 type chalcopyrite semiconductors. Recently we have succeeded in fabricating magnetic semiconductors showing ferromagnetism at room temperature using solid solution of Mn into CdGeP2 and ZnGeP2.

Original Papers

    2003 Academic Year

    1. Y. Ishida, D.D. Sarma, K. Okazaki, J. Okabayashi, J.I. Hwang, H. Ott, A. Fujimori, G.A. Medvedkin, T. Ishibashi and K. Sato: In situ photoemission study of the room-temperature ferromagnet ZnGeP2:Mn: Phys. Rev. Lett. 91[10](2003) 107202-1--107202-4
    2. T. Matsumoto, T. Tezuka, T. Ishibashi, Y. Morishita, A. Koukitu and K. Sato: Fabrication and magnetic characterization of embedded permalloy structures, Trans. Magn. Soc. Jpn. 3 [3] (2003) 103-107.
    3. K. Sato , G.A. Medvedkin, T. Ishibashi, S. Mitani, K. Takanashi, Y. Ishida, D. D. Sarma, J. Okabayashi, A. Fujimori, T. Kamatani, H. Akai: Novel Mn-doped Chalcopyrites; Proc. 13th Int. Conf. Ternary & Multinary Compounds (ICTMC13), Paris, 2002.9.14-18, J. Phys. Chem. Solids 64 [9-10] (2003) 1461-1468

    2002 Academic Year

    1. P. G. Baranov, S. I. Goloshchapov, G. A. Medvedkin1, T. Ishibashi, K. Sato: Magnetic Resonance in ZnGeP2 and (Zn,Mn)GeP2; J. Superconductivity: Incorporating Novel Magnetism (JOSC) 16 [1] (2003) 131-133 (in press)
    2. K. Sato, G.A. Medvedkin and T. Ishibashi: Room temperature ferromagnetism in novel magnetic semiconductor based on the II-IV-V2 chalcopyrite compounds[Invited]; J. Crystal Growth 237-239(2002), Part 2, 1363-1369.
    3. K. Hirose, G.A. Medvedkin, T. Ishibashi, T. Nishi and K. Sato: Growth of (Cd,Mn)GeP2 ferromagnetic semiconductor; J. Cryst. Growth 237-239(2002), Part 2, 1370-1373.
    4. G.A. Medvedkin, K. Hirose, T. Ishibashi, T. Nishi, V.G. Voevodin and K. Sato: New Magnetic Materials in ZnGeP2-Mn Chalcopyrite System; J. Cryst. Growth 236, (2002) 609-612.

    2001 Academic Year

    1. K. Sato, G. A. Medvedkin , T. Nishi, Y.i Hasegawa, R. Misawa, K. Hirose and T. Ishibashi: Ferromagnetic phenomenon revealed in the chalcopyrite semiconductor CdGeP2:Mn; J. Appl. Phys. 88 (2001) 7027-7029.
    2. K. Sato, G.A. Medvedkin T. Ishibashi, T. Nishi, R. Misawa, K. Yonemitsu, and K. Hirose: Magnetization Effect in Mn-CdGeP2 Quaternary System); J. Magn. Soc. Jpn. 25 [4-2] (2001) 735-738. Awarded MSJ paper award
    3. G.A. Medvedkin, T. Ishibashi, T. Nishi, K. Sato: A New Magnetic Semiconductor Cd1-xMnxGeP2; Semiconductors 35 [3](2001) 305-309.(In Russian and English)

    2000 Academic Yaer

    1. G.A. Medvedkin, T. Ishibashi, T. Nishi, K. Hayata, Yo. Hasegawa and K. Sato: Room Temperature Ferromagnetism in Novel Diluted Magnetic Semiconductor Cd1-xMnxGeP2; Jpn. J. Appl. Phys. 39 Part 2 [10A] (2000) L949-L951, Express Letters.
    2. G.A.Medvedkin, T. Nishi and K. Sato: Photoluminescence of CdSnP2 Single Crystals in the Vicinity of the Fundamental Optical Edge; Jpn. J. Appl. Phys. 39 Part 1 [11] (in press)
    3. T. Nishi, G.A. Medvedkin, Y. Katsumata, K. Sato and H. Miyake: EPR and PL Study of Defects in CuGaSe2 Single Crystals Grown by the Travelling Heater Method; Jpn. J. Appl. Phys. to be published
    4. K.Sato, Y. Katsumata and T. Nishi: Electron Spin Resonance of Fe in CuGaSe2;Proc. 12th Int. Conf. Ternary and Multinary Compounds, Hsinchu, Taiwan, March 13-17, 2000, Jpn. J. Appl. Phys. 39 Suppl. 39-1 to be published.
    5. T. Nishi, N. Ishibashi, N. Hayashi, C. Furuhashi and K. Sato: Change in Optical Absorption by Metal Contacts in Al-CuAlS2-Au Diode; Proc. 12th Int. Conf. Ternary and Multinary Compounds, Hsinchu, Taiwan, March 13-17, 2000, Jpn. J. Appl. Phys. 39 Suppl. 39-1 to be published.
    6. T. Nishi, Y. Katsuamata and K. Sato: Characterization by PL and ESR in Mo-doped CuAlS2 Single Crystals;Proc. 12th Int. Conf. Ternary and Multinary Compounds, Hsinchu, Taiwan, March 13-17, 2000, Jpn. J. Appl. Phys. 39 Suppl. 39-1 to be published.
    7. T. Nishi, Y. Katsumata, K.Sato and H. Miyake: ESR and PL Characterization of CuGaSe2 Single Crystals; Proc. Photo-Voltaic Science and Engineering Conference, Sapporo, Sept. 1999, Solar Energy Materials and Solar Cells (submitted)
    8. T. Nishi and K. Sato: Photoluminescence studies of rare earth doped CuAlS2 single crystals; Proc. Int Conf. Luminescence, Osaka, August 1999, J. Luminesc. 87-89 (2000) 1105-1107.

    1999 Academic Year

    1. N. Ishibashi, T. Nishi, N. Hayashi, C. Furuhashi and K. Sato: Electrically Induced Optical Absorption in Al-CuAlS2-Au Diode; Jpn. J. Appl. Phys. 38, [6A/B] (1999) L626-L628
    2. T. Nishi, N. Ishibashi, Y. Katsuamta and K. Sato: Near-Infrared Photoluminescence in Mo-Doped Single Crystals of CuAlS2; Jpn. J. Appl. Phys. 38 Part 1 [2A] (1999) 683-684.

    1998 Academic Year

    1. K. Kondo, S. Nakamura, and K. Sato:Raman Scattering Studies of CuInS2 Films Grown by RF Ion Plating; Jpn. J. Appl. Phys. 37 Part 1, [10] (1998) 5728-5729.
    2. H. Sano, T. Ishibashi and K. Sato: The Effect of Acceleration Voltage for the Preparation of CuInSe2 Thin films by Ionized Cluster Beam Technique; Jpn. J. Appl. Phys. 37 Part 2, [9A/B] (1998) L1070-L1073.
    3. K. Kondo, H. Sano and K. Sato: Nozzle diameter effects on CuInSe2 films grown by ionized cluster beam deposition; Thin Solid Films 326 (1998) 83-87.
    4. K. Itoh, S. Yamamoto, K. Sato and J. Nakahara: Pressure Dependence of Photoluminescence Spectra in CuAlS2 Doped with Lanthanide; Proc. AIRAPT16 & HPCJ38, Kyoto, Aug. 25-29, 1997, Rev. High Pressure Sci. Technol. 7 (1998) 769-771.
    5. K. Tanaka, Y. Kimura, S. Okamoto, Y. Inoue and K. Sato: Red Electroluminescence of Mn-doped CuAlS2 Powder and Single Crystal; Jpn. J. Appl. Phys. 37 Part 1, [6A] (1998) 3350-3356
    6. H. Sano, H. Hirasawa, S. Nakamura, K. Kondo and K. Sato: Low Temperature Deposition of CuIn(SxSe1-x)2 Thin Films by ICB Technique; Jpn. J. Appl. Phys. 37 Part 1, [4A] (1998) 1760-1763
    7. Y. Yanase, T. Shimizu, T. Ishibashi, H. Sano, K. Kondo and K. Sato: Measurement of ionic currents conveyed by cluster beams during ICB deposition of CuInSe2 thin films; Proc. 11th Int. Conf. Ternary & Multinary Compounds, Salford, Sept. 8-12, 1997, Inst. Phys. Conf. Ser. 152 "Ternary and Multinary Compounds" (IOP, London, 1998) pp.369-372
    8. T. Nishi, Y. Kimura and K. Sato: Infrared photoluminescence studies of rare earth-doped CuAlS2 single crystals; Proc. 11th Int. Conf. Ternary & Multinary Compounds, Salford, Sept. 8-12, 1997, Inst. Phys. Conf. Ser. 152 "Ternary and Multinary Compounds" (IOP, London, 1998) pp.405-408

    1997 Academic Year

    1. V.V. Ursaki, I.I. Burlakov, I.M. Tiginyanu, Y.S. Raptis, E. Anastassakis, I. Aksenov and K. Sato; Pressure-Induced Phase Transition in Spinel and Wurtzite Phases of ZnAl2S4 Compounds; Jpn. J. Appl. Phys. 37 Part 1 [1] (1998) 135-140
    2. J. Gordon, H. Ikekame, T. Nakamura, J. Itabashi, H, Nagayoshi and K. Sato: Growth of MnSb Thin Films on CdTe Substrates by Hot-Wall Epitaxy; Jpn. J. Appl. Phys. 36, [5B] L607-L610.
    3. K. Kondo, S. Nakamura, H. Sano, H. Hirasawa and K. Sato: Growth and Characterization of CuInS2 Films grown by RF-ion Plating; Jpn. J. Appl. Phys. 36, Part 1 [11] (1997) 6668-6671.

    1996 Academic Year

    1. K. Kondo, S. Nakamura, H. Sano, H. Hirosawa and K. Sato: Growth and characterization of CuInS2 Films grown by RF Ion Sputtering; Proc. PVSEC9, Miyazaki, Nov. 12-15, 1996, Solar Energy Materials and Solar Cells 49 (1997) 327-335.
    2. Y. Kimura, T. Ohgoh, I. Aksenov and K. Sato: Optical Properties of Er-Doped CuAlS2; Jpn. J. Appl. Phys. 35, Part 1 [7] (1996) 3904-3908.
    3. K. Sato, Y. Kimura and T. Nishi: Blue and Violet Luminescence in Ternary Compound Semiconductors; Proc. Int. Symp. Blue Laser and Light Emitting Diodes, Chiba, March 5-7, 1996, pp. 570-573.
    4. I. Aksenov, H. Katsumata, Y. Makita, Y. Kimura, T. Shinzato and K. Sato: Electron Spin Resonance Studies in (-FeSi2 Crystals: J. Appl. Phys. 80 [3] (1996) 1678-1681.
    5. K. Sato: Optical Absorption and ESR Characterization of CuInSe2 and Related Compounds, Proc. MRS-J Symposium, Makuhari Messe, May 22-23, 1996, pp.34-37.
    6. K. Tanaka, T. Ohgoh, K. Kimura, H. Yamamoto, K. Shinagawa and K. Sato: Crystal Growth and Polarized Photoluminescence Spectra in Ce-doped Single Crystal of SrGa2S4; Jpn. J. Appl. Phys. 34, Part 2, [12B] L1651-L1654 (1996)
    7. K. Sato, T. Kondo, J. Abe, H. Ikekame, M. Sano, S. Mitani, K. Takanashi and H. Fujimori: Magneto-optical Spectra in Fe(xML)/Au(xML) Artificially Ordered Superlattices; J. Magn. Soc. Jpn. 20 [2] (1996) 197-200.
    8. T. Muro, T. Shishidou, F. Oda, T. Fukawa, H. Yamada, A. Kimura, S. Imada, S. Suga, S.Y. Park, T. Miyahara and K. Sato: Magnetic Circular Dichroism of the S 2p, Co 2p, and Co 3p Core Absorption and Orbital Angular Momentum of the Co 3d State in Low-Spin CoS2, Phys. Rev. B 53, [11] (1996) 7055-7058.
    9. K. Sato, N. Nishikawa, I. Aksenov, T. Shinzato and H. Nakanishi: Effect of Fermi Level Motion on the Optical, ESR and Transport Properties of CuInSe2; Jpn. J. Appl. Phys. 35, Part 1, [4] (1996) 2061-2067.
    10. I. Aksenov, K. Sato, T. Shinzato, N. Nishikawa and H. Nakanishi: Free-Carrier and Interband Absorption in CuInSe2; Proc. 10th Int. Conf. Ternary & Multinary Compounds, J. Cryst. Res. & Tech., 31 (1996) Special Issue 1, 135-142.
    11. K. Sato, I. Aksenov, N. Nishikawa, T. Shinzato and H. Nakanishi: Optical and ESR Characterization of Iron Impurity in Cu-III-VI2 Semiconductors; Proc. 10th Int. Conf. Ternary & Multinary Compounds, Stuttgart 1995 , J. Cryst. Res. & Tech., 31 (1996) Special Issue 1, 593-596.
    12. K. Sato, Y. Kimura, K. Shimizu, T. Ohgoh and Y. Kudo: Photoluminescence Spectra in Single Crystals of CuAlS2 Doped with Rare-Earth Metals; Proc. 10th Int. Conf. Ternary & Multinary Compounds, Stuttgart 1995, J. Cryst. Res. & Tech., 31 (1996) Special Issue 1, 713-716.
    13. I. Aksenov, K. Sato and T. Kai: Phtoluminescence of ZnAl2S4 in a Visible Spectral Region: Proc. 10th Int. Conf. Ternary & Multinary Compounds, Stuttgart 1995 , J. Cryst. Res. & Tech., 31 (1996) Special Issue 1, 733-736.
    14. H. Sano, K. Kondo and K. Sato: Growth of CuInSe2 Thin Films by Triple-Ionized Beam Technique; Proc. 10th Int. Conf. Ternary & Multinary Compounds, Stuttgart 1995 , J. Cryst. Res. & Tech., 31 (1996) Special Issue 1, 349-352.

    1995 Academic Year

    1. K.Sato, Y.Tosaka, H.Ikekame, M.Watanabe, K.Takanashi and H.Fujimori: Magnetic Polarization of Interfacial Pt layers Witnessed by Magnetooptical Spectra in FePt/Pt Multilayers; Proc. ICMFS/E-MRS Meeting, Duesseldorf, 1994; J. Magn. Magn. Mater. 148 (1995) 206-208.
    2. K.Sato, Y.Tosaka and H.Ikekame: Magnetooptical Spectra of MnSb Crystal between 1.2 and 6.4 eV; Proc. MORIS'94, Tokyo, Sept., 1994, J. Magn. Soc. Jpn. 20, Suppl. S1 (1995) 255-258.
    3. T.Ohgoh, K.Sato, K.Noguchi and K.Okuyama: A Novel Blue-to-Green Phosphor of Cu-Al-S System Sensitized with Rare Earth Elements; Jpn. J. Appl. Phys. 34 Part 2 [1A] (1995) L41-L43.
    4. N. Nishikawa, T. Kai, I. Aksenov and K. Sato: ESR Characterization of CuAlSe2 Single Crystals; Jpn. J. Appl. Phys. 34 Part2 [2B] (1995) L223-L226.
    5. T. Kai, M. Kaifuku, I. Aksenov and K. Sato: Photoluminescence Studies of Wurtzite Type W-ZnAl2S4 Single Crystals; Jpn. J. Appl. Phys. 34, Part 1, [9A] (1995) 4682-4686.
    6. T. Kai, M. Kaifuku, I. Aksenov and K. Sato: Green Photoluminescence from -phase of ZnAl2S4; Jpn. J. Appl. Phys. 34, Part 1, [6A] (1995) 3073-3074.
    7. N. Nishikawa, I. Aksenov, T. Shinzato and K. Sato: ESR and Optical Studies of CuInS2 Single Crystals; Jpn. J. Appl. Phys. 34, Part 2 [8A] (1995) L975-L977.

    1994 Academic Year

    1. M.Fujisawa, S.Suga, T.Mizoguchi, A.Fujimori and K.Sato: Electronic Structures of CuFeS2 and CuAl0.9Fe0.1S2 Studied by Electron and Optical Spectroscopies; Phys. Rev. B49 [11] (1994) 7155-7164.
    2. K.Sato, H. Ida and O. Ishikawa: A PV Experience in Japan; Conf. Rec. IEEE 1st World Conference on Photovoltaic Energy Conversion, Waikoloa, December 5-9, 1994, pp.1032-1035.
    3. H. Sano, S. Nakamura, K. Kondo and K.Sato: The Low Temperature Deposition of ICB-Grown CuInSe2 Thin Films ; Conf. Record 1st World Conference on Photovoltaic Energy Conversion, Waikoloa, December 5-9, 1994 pp.179-181.

    1993 Academic Year

    1. I.Aksenov, T.Kai, N.Nishikawa, and K.Sato: Optical Absorption of Co2+ in CuAlS2; Jpn. J. Appl. Phys. 32 Part 2 [4A] (1993) L516-L519.(Letter)
    2. S.Kijima, K.Sato and T.Koda: Spectra of Magnetic Circular Dichroism of Absorption and Photoluminescence of Eu-Doped CaS Single Crystals; J. Luminesc. 55 (1993) 187-191.
    3. I.Aksenov, T.Yasuda, Y.Segawa and K.Sato: Violet Photoluminescence in Zn-doped CuAlS2; J. Appl. Phys. 74 [3] (1993) 2106-2108.
    4. I. Aksenov, T. Kai, N. Nishikawa and K. Sato: Optical Absorption and ESR of CuAlS2:Ni; Jpn. J. Appl. Phys. 32 Part 1 [8] (1993) 3391-3395.
    5. I.Aksenov, M.Matsui, T.Kai and K.Sato: Photoluminescence Studies in CuAlS2:Zn; Jpn. J. Appl. Phys. 32 Part 1 [10] (1993) 4542-4549.
    6. I.Aksenov, N. Nishikawa and K. Sato: Electron Spin Resonance of Copper Vacancy in CuAlS2; J. Appl. Phys. 74 [6] (1993) 3811-3814.
    7. N.Koshida, H.Koyama, Y.suda, Y.Yamamoto, M.Arai, T.Saito, K.Sato, N.Sata and S.Shin: Optical Characterization of Porous Silicaon by Synchrotron Radiation Reflectance Spectra Analyses; Appl. Phys. Lett. 63 [20] (1993) 2774-2776.
    8. H.Sano, S.Katayama, S.-C. Yee, K.Kondo and K.Sato: Low Temperature Depositio of CuInSe2 Thin Films by ICB Technique; Proc. 12th Symposium on Ion Beam Technology, Hosei Univ., December 1993, (Res, Center of Ion Beam Technology, 1994) pp. 63-68.
    9. T.Ushiki, A.Ueno, T.Kai, H.Sano, H.Usui and K.Sato: Characterization by Photoluminescence of ICB-Grown CuInSe2 Thin Films; Proc. 9th Int. Conf. Ternary & Multinary Compounds, Yokohama, August 1993, Jpn. J. Appl. Phys. 32 (1993) Suppl. 32-3, pp. 103-105.
    10. K.Tanaka, M.Kosugi, F.Ando, T.Ushiki, H.Usui and K.Sato: Photoconductive Imaging Using CuInSe2 Film; Proc. 9th Int. Conf. Ternary & Multinary Compounds, Jpn. J. Appl. Phys. 32 (1993) Suppl. 32-3, pp. 113-115.
    11. I.Aksenov, T.Kai, N.Nishikawa and K.Sato: Visible Photoluminescence in Undoped and Zn-Doped CuAlS2; Proc. 9th Int. Conf. Ternary & Multinary Compounds, Yokohama, August 1993, Jpn. J. Appl. Phys. 32 (1993) Suppl. 32-3, pp.153-155.
    12. K.Sato, I.Aksenov, N.Nishikawa and T.Kai: Optical and ESR Characterization of Transition Atoms in CuAlS2; Proc. 9th Int. Conf. Ternary & Multinary Compounds, Yokohama, August 1993, Jpn. J. Appl. Phys. 32, (1993) Suppl. 32-3, pp. 481-483.
    13. S.Kijima, S.Ohki, K.Sato and K.Kishio: Magnetic Circular Dichroism Spectra of Eu-Doped CaS and SrS Single Crystals; Proc. 9th Int. Conf. Ternary & Multinary Compounds, Yokohama, August 1993, Jpn. J. Appl. Phys. 32 (1993) Suppl. 32-3, pp. 605-607.
    14. T.Ohgoh, Y.Kudo and K.Sato: Single Crystals of CuAlS2 Doped with Rare-Earth Ions; Proc. 9th Int. Conf. Ternary & Multinary Compounds, Yokohama, August 1993, Jpn. J. Appl. Phys. 32 (1993) Suppl. 32-3, pp. 608-609.
    15. T.Ohgoh, Y.Kudo, I. Aksenov and K.Sato: Photoluminescence in Tm-doped CuAlS2 Single Crystals; Jpn. J. Appl. Phys. 33 Part 1 [2] (1994) 113-115.

    1992 Academic Year

    1. S.Matsuda, Y.Kudo, T.Ushiki, H.Inoue and K.Sato: ICB(Ionized Cluster Beam) Deposition of Polycrystalline Thin Films of CuInSe2; Jpn. J. Appl. Phys. 31 Part 1 [4](1992) 999-1003.
    2. I.Aksenov and K.Sato: Electron Spin Resonance and Optical Absorption of Ti3+ and V3+ in CuAlS2; Jpn. J. Appl. Phys. 31 Part 2 [5B](1992) L527-L530.(Letter)
    3. Y.Kudo, A.Kojima, Y.Takada and K.Sato: Photoluminescence Spectra in Tb-doped Single Crystals of CuAlS2; Jpn. J. Appl. Phys. 31 Part 2 [6A] (1992) L663-L665.(Letter)
    4. I.Aksenov and K.Sato: Photoluminescence of Zn-Doped CuAlS2 in Visible Spectral Region; Record of Alloy Semiconductor Physics and Electronics Symposium, Kyoto, July, 1992, pp.67-74.
    5. I.Aksenov, Y.Kudo and K.Sato: Electron Spin Resonance of Tb3+ Ion in CuAlS2; Jpn. J. Appl. Phys. 31 Part 2 [8A] (1992) L1009-L1011.(Letter)
    6. S.Shirakata, I.Aksenov, K.Sato and S.Isomura: Photoluminescence Studies in CuAlS2 Crystals; Jpn. J. Appl. Phys. 31 Part 2 [8A] (1992) L1071-1074.(Letter)
    7. I.Aksenov and K.Sato: The Effect of Fermi Level Motion on ESR and Optical Properties of CuAlS2; Jpn. J. Appl. Phys. 31 Part 1 [8] (1992) 2352-2358.
    8. I.Aksenov and K.Sato: Visible Photoluminescence of Zn-Doped CuAlS2; Appl. Phys. Lett. 61 [9] (1992) 1063-1065.
    9. I.Aksenov, T.Yasuda, T.Kai, N. Nishikawa, T.Ohgo and K.Sato: Photoluminescence of Cd-Doped CuAlS2: Jpn. J. Appl. Phys. 32 Part 1 [3A] (1993) 1068-1069.(Short Notes)

    1991 Academic Year

    1. K.Sato, Y.Kudo, S.Kijima and L.K.Samanta: Characterization of I-III-VI2 Bulk Crystals Grown by Chemical Vapor Deposition: Application of Phase-Shift Difference Spectroscopy; Proc. 7th Int. Conf. Vapor Growth & Epitaxy, Nagoya, July 1991, J. Crystal Growth 115 (1991) 740-744.
    2. I.Aksenov, Y.Kudo and K.Sato: Optical Absorption Spectra in CuAlS2 Doped with Vanadium; Jpn. J. Appl. Phys. 31 Part 2 [2B] (1992) L145-147.(Letter)
    3. X-J.Li, Y.Kudo, S.Matsuda, I.Aksenov and K.Sato: The Effect of Thermal Treatments on the Fe3+-related Absorption and Infrared Photoluminescence Spectra of CuGaS2; Jpn. J. Appl. Phys. 31 Part 2 [3B](1992) L303-L305.(Letter)

    1990 Academic Year

    1. K.Sato, K.Tanaka, K.Ishii and S.Matsuda: Crystal Growth and Photoluminescence Studies in Fe-Doped Single Crystals of CuAl1-xGaxS2; Proc. 9th International Conf. on Crystal Growth (ICCG°9), Sendai, 1989, J. Cryst. Growth 99 (1990) 772-775.
    2. K.Sato, S.Matsuda and Y.Kudo: Characterization of CuInSe2 Thin Films Prepared by ICB(Ionized Cluster Beam) Technique; Proc. 8th Int. Conf. Ternary & Multinary Compounds, Kishinev, Sept. 1990, eds. S.I. Radautsan and C.Schwab, (Shtiintsa Press, Kishinev, 1990)vol.1 pp.205-208.
    3. K.Sato: Optical Characterization of Fe Atoms in CuMS2 (M=Al, Ga and In) Crystals; Proc. 8th Int. Conf. Ternary & Multinary Compounds, Kishinev, Sept. 1990, eds. S.I. Radautsan and C.Schwab, (Shtiintsa Press, Kishinev, 1990) vol.1 pp.50-57.
    4. K.Sato, K.Ishii, K.Ohe, K.Watanabe and Y.Kudo: Optical Properties of Mn-Doped Crystals of CuAlS2 and CuAlSe2; Proc. 8th Int. Conf. Ternary & Multinary Compounds, Kishinev, Sept. 1990, eds. S.I. Radautsan and C.Schwab, (Shtiintsa Press, Kishinev, 1990)vol.1 pp.137-140.
    5. K.Sato, K.Ishii, K.Watanabe and K.Ohe: Time-Resolved Photoluminescence Spectra in Single Crystals of CuAlS2:Mn; Jpn. J. Appl. Phys. 30 [2] (1991) 307-313.

    1989 Academic Year

    1. S.Mizukawa, K.Sato, K.Yasuhiro, M.Isawa, K.Kuroiwa and Y.Tarui: Optical Studies of Boron-Doped a-Si:H Films Prepared by Photo-CVD Technique; Jpn. J. Appl. Phys. 28 [6](1989) 961-964.

    1988 Academic Year

    1. K.Sato, T.Iijima, T.Nakajima, K.Yahagi and S.Kobayashi: Characterization of Below-Gap Absorption in Semi-Insulating GaAs:Cr by Magneto-Circular Dichroism Spectrum; Jpn. J. Appl. Phys. 27 [6] (1988) 979-982.
    2. K.Sato, M.Isawa, N.Takahashi and H.Tsunoda: Optical Absorption Spectra of CuInS2 Doped with Fe, Mn and Cr; Jpn. J. Appl. Phys. 27 [7] (1988) 1359-1360.(Short Notes)
    3. K.Sato, K.Ishii and K.Tanaka: Electroluminescence Spectrum in CuAlS2:Mn; Proc. Int. Workshop on Electroluminescence, Tottori, 1988, pp.390-393.
    4. K.Tanaka, K.Ishii, S.Matsuda, T.Hasegawa and K.Sato: Optical Characterization of Deep Levels in Single Crystals of CuGaS2 Grown by Chemical Vapor Transport Technique; Jpn. J. Appl. Phys. 28 [1] (1989) 12-15.

    1987 Academic Year

    1. K.Sato, T.Iijima, T.Nakajima and S.Kobayashi: Magneto-Circular Dichroism Spectra in Semi-Insulating GaAs:Cr and InP:Fe; Proc. Int. Symp. Magneto-Optics, Kyoto, 1987, J. Magn. Soc. Jpn. 11, Suppl.S1 (1987) 121-124.
    2. S.Kawasaki, K.Sato, K.Suzuki, H.Takeuchi, K.Kuroiwa and Y.Tarui: Optical Characterization of a-Si:H Films Prepared by GD and Photo-CVD Techniques; Jpn. J. Appl. Phys. 26 [9] (1987) 1400-1403.

    1986 Academic Year

    1. K.Sato, T.Iijima and S.Kobayashi: Magneto-Optical Characterization of Semi-Insulating Gallium Arsenide Doped with Chromium; Proc. 4th Conf. Semi-Insulating III-V Materials, Hakone, 1986, (Ohm-sha, 1986) 493.
    2. T.Kawaguchi, Y.Tanaka, H.Sekiguchi, H.Hirai, K.Sato and S.Kobayashi: A Novel Method of Fabrication of Te Thin Film Transistors; Jpn. J. Appl. Phys. 25 (1986) 449-452.
    3. K.Sato, H.Tsunoda and T.Teranishi: Optical Characterization of Transition Atom Impurities in I-III-VI2 Semiconductors; Proc. 7th Int. Conf. Ternary and Multinary Compounds, Snowmass 1986, (Mater. Res. Soc., 1987) 459-464.
    4. M.Susaki, N.Yamamoto and K.Sato: Photoelectric Properties of CuGa1-xInxS2; Proc. 7th Int. Conf. Ternary and Multinary Compounds, Snowmass 1986, (Mater. Res. Soc., 1987) 139-144.

    1984 Academic Year

    1. K.Sato, M.Morita and F.Sato: Optical Characterization of GaAs and GaP Laser-Annealed in High Pressure Ar Atmosphere; Jpn. J. Appl. Phys. 23 [10] (1984) 1325-1329.
    2. K.Sato, M.Morita, S.Okamoto, S.Morita, T.Kambara, K.I.Gondaira and H.Takenoshita: Red Photoluminescence Spectrum of CuAlS2:Mn; Proc. 6th Int. Conf. Ternary and Multinary Compounds, Caracas, 1984, Prog. Cryst. Growth & Charact. 10 (1984) 311-320.

    (2)Magnetic and Magneto-Optical Studies of Magnetic Multilayers and its Device Applications
    Magneto-optical effect is a key technology for magneto-optical recording.
    We have been working with magneto-optical experiments and analyses in amorphous magnets, magnetic compounds, magnetic semiconductors, metallic superlattices, and artificially ordered alloys.
    We have clarified relations between electronic structures and magneto-optical effects in these materials.
    We are now working with epitaxial growth of magnetic films on semicondutor substrates. Characterization of nanoscale magnetic films and superlattices by nonlinear magneto-optical effects (NOMOKE), and scanning near-field magneto-optical microscopy (MO-SNOM). We also study nano fabrication techniques using electron-beam lithography and focused ion beam apparatus.

    Original Papers

    2002 Academic Year

    1. M. Futamoto, K. Terayama, K. Sato, N. Inaba and Y. Hirayama: Crystallographic and Magnetic Properties of CoCrPt Thin Films Investigated Using Single-Crystal Perpendicular Magnetic Thin Film Samples; Mat. Res. Soc. Symp. Proc. 721 (2002) 279-289.
    2. K. Sato and T. Ishibashi: Magneto-optical and Reflectivity Studies in SrTiO3; Proc. Magneto-Optical Recording International Symposium 2002, Benodet, France, May 6-9, 2002, Trans. Magn. Soc. Jpn. 2 [4] (2002) 167-170.
    3. K. Sato, M. Hosoba, S. Shimizu, K. Terayama and M. Futamoto: Magneto-optical Spectra of Single Crystalline CoCrPt Films between 1.2 and 6 eV; Proc. Magneto-Optical Recording International Symposium 2002, Benodet, France, May 6-9, 2002, Trans. Magn. Soc. Jpn. 2 [4] (2002) 171-174.
    4. M. Futamoto, K. Terayama, K. Sato and Y. Hirayama: Preparation and Characterization of (0001) Oriented Single-crystal Co-alloy Magnetic Thin Films; IEICE Trans. Electronics E85-C [10] (2002) 1733-1739.
    5. M. Futamoto, K. Terayama, K. Sato, Y. Hirayama: Preparation and characterization of epitxial Co-alloy magnetic thin ?lms on oxide single-crystal substrates; Scripta Materialia 48 (2003) 929-935

    2001 Academic Year

    1. “ρ–{³ΊAŽ›ŽRŒφ‘ΎA²“‘ŸΊA•½ŽR‹`KA–{‘½K—YFCo‡‹ΰŽ₯«ή—Ώ‚Μ’PŒ‹»”––ŒŒ`¬‚Ζ”χΧ\‘’‰πΝGMŠw‹Z•ρ@MR2001-45 (2001-11) 43-48. (M. Futamoto, K. Terayama, K. Sato, Y. Hirayama, Y. Honda: Preparation and Characterization of Single-Crystal Co-alloy Magnetic Thin Films; Tech. Rep. IEICE MR2001-45 [11] (2001) 43-48. )
    2. K. Sato, A. Kodama, M. Miyamoto, A.V. Petukhov, K. Takanashi, S. Mitani, H. Fujimori, A. Kirilyuk and Th. Rasing: Anisotropic Magnetisation-Induced Second Harmonic in Fe/Au Superlattices; Phys. Rev. B64 (2001) 184427-1~10.
    3. I. Chiba, K. Himi, K. Saito, S. Mitani, K. Takanashi, K. Hayata, K. Sato and H. Fujimori: Perpendicular magnetic anisotropy and magnetooptical Kerr effect in Fe/Au(001) superlattices; comparison between monocrystalline and polycrystalline samples; J. Magn. Magn. Mater. 226-230 (2001) 1720-1721.
    4. Ž›ŽRŒφ‘ΎA²“‘ŸΊA•½ŽR‹`KAˆξ—tMKA“ρ–{³ΊFŽ_‰»•¨’PŒ‹»Šξ”Β‚π—p‚’‚½CoCrPt‚’Ό’PŒ‹»”––Œ‚̍쐻G“ϊ–{‰ž—pŽ₯‹CŠw‰οŽ25 [4-2] (2001) 559-562. (K. Terayama, K. Sato, Y. Hirayama, N. Inaba, and M. Futamoto: Preparation of c-axis oriented CoCrPt single crystal thin films on oxide single crystal substrates; J. Magn. Soc. Jpn. 25 [4-2] (2001) 559-562.)

    2000 Academic Year

    1. K. Sato, A. Kodama, M. Miyamoto, K. Takanashi, H. Fujimori and Th. Rasing: Nonlinear Magneto-Optical Effect in Fe/Au Superlattices modulated by Non-Integer Atomic Layers; J. Appl. Phys. 87 [9] (2000) 6785-6787.
    2. A.Kodama,M.Miyamoto,K.Sato,S.Mitani, K.Takanashi, H.Fujimori: Characterization of Interfaces of Fe/Au Superlattices by Means of Nonlinear Magneto-optical Effect; J. Magn. Soc. Jpn. 24 [4] (2000) 383-386.

    1999 Academic Year

    1. K. Sato, S. Mitani, K. Takanashi, H. Fujimori, A. Kirilyuk, A. Petukhov and Th. Rasing: Nonlinear magneto-optical effect in Fe/Au superlattices: Proc 4th Int. Symp. Phys. Magn. Materials, Sendai, August 25, 1998, J. Magn. Soc. Jpn. 23, [1-2] (1999) 352-353
    2. T. Ishibashi, T. Yoshida, A. Iijima, K. Sato, Y. Mitsuoka and K. Nakajima: Polarization Properties of Bent-type Optical Fiber Probe for Magneto-optical Imaging; Proc. 5th Int. Conf. Near-Field Optics (NFO-5), Wakayama, Dec.6-10, 1998, J. Microscopy 194 Pt 2/3 (1999) 374-377.
    3. K.Sato, T.Ishibashi, T.Yoshida, J.Yamamoto, A.Iijima, Y.Mitsuoka, and K.Nakajima: Observation of Recorded Marks of MO Disk by Scanning Near-Field Magneto-Optical Microscope; Proc. Magneto-Optical Int. Symposium '99, Monterey, Jan. 10-13, 1999; J. Magn. Soc. Jpn. 23, Suppl. S1 (1999) 201-204
    4. R. Hayashi, K. Terayama, T. Ishibashi and K. Sato: MnBi Thin Films Prepared by Molecular-Beam Epitaxy Technique; Proc. Magneto-Optical Int. Symposium '99, Monterey, Jan. 10-13, 1999; J. Magn. Soc. Jpn. 23, Suppl. S1 (1999) 99-102
    5. K. Sato, E. Takeda, M. Akita, M. Yamaguchi, K. Takanashi, S. Mitani, H. Fujimori, Y. Suzuki: Magneto-optical spectra of Fe/Au artificial superlattices modulated by integer and non-integer atomic layers; J. Appl. Phys. 86 [9] (1999) 4985-4996

    1998 Academic Year

    1. K. Sato, H. Ikekame, M. Akita, Y. Morishita: Magnetooptical spectra in MnSb and MnAs films prepared by atomic-hydrogen assisted hot wall epitaxy on GaAs; Proc. Int. Conf. Magnetism, Cairns, July 1997; J. Magn. Magn. Mater. 177-181 (1998) 1379-1380.
    2. K. Takanashi, S. Mitani, H. Fujimori, K. Sato and Y. Suzuki: Magnetooptical Kerr Effect In Fe/Au Superlattices Modulated By Integer Monatomic Layers; Proc. Int. Conf. Magnetism, Cairns, July 1997; J. Magn. Magn. Mater. 177-181 (1998) 1199-1200
    3. Y. Morishita, K. Iida, A. Tsuboi, H. Taniguchi and K. Sato: Molecular-beam epitaxy of MnAs in the presence of atomic hydrogen; J. Cryst. Growth. 187 (1998) 228-233
    4. K. Sato, E. Takeda, M. Akita, S. Mitani, K. Takanashi and H. Fujimori: Magnetooptical Spectra in Fe-Au Superlattices Modulated by Non-Integer Atomic Layers; Proc. Magneto-Optical Recording International Symposium 1997, Yamagata, October 28-31, 1997, J. Magn. Soc. Jpn. 22, Suppl. S2 (1998) 193-196.
    5. K. Nakajima, Y. Mitsuoka, N. Chiba, H. Muramatsu, T. Ataka, K. Sato, M. Fujihira: Polarization effect in scanning near-field optic/atomic force microscopy (SNOM/AFM); Proc. 4th Int. Conf. Near-Field Optics (NFO-4), Jerusalem, Feb. 9-13, 1997, Ultramicroscopy 71 (1998) 257-262.
    6. Y. Mitsuoka, K. Nakajima, K. Homma, N. Chiba, H. Muramatsu, T. Ataka and K. Sato: Polarization properties of light emitted by a bent optical fiber probe and polarization contrast in scanning near-field optical microscopy; J. Appl. Phys. 83 (1998) 3998-4003
    7. T. Ishibashi, T. Yoshida, J. Yamamoto, K. Sato, Y. Mitsuoka and K. Nakajima: Magneto-optical imaging by scanning near-field optical microscope using polarization modulation technique; Proc 4th Int. Symp. Phys. Magn. Materials, Sendai, August 25, 1998, J. Magn. Soc. Jpn. 23, [1-2] (1999) 712-714
    8. Y.Morishita, Y.Sugawara, M.Kato, and K.Sato: Molecular-beam epitaxy of MnAs on patterned GaAs substrates; Proc. 4th Int. Symp. Phys. Magn. Materials, Sendai, August 1998, J. Magn. Soc. Jpn. 23, [1-2] (1999) 682-684.
    9. Y.Morishita, A.Tsuboi, H.Suzuki, and K.Sato: Molecular-beam epitaxy of AlGaMnAs diluted magnetic semiconductor; Proc. 4th Int. Symp. Phys. Magn. Materials, Sendai, August 1998, J. Magn. Soc. Jpn. 23, [1-2] (1999) 93-95.

    1997 Academic Year

    1. H. Ikekame, Y. Yanase, T. Ishibashi, T. Saito, Y. Morishita and K. Sato: Effect of Atomic Hydrogen Assistance on Hot-Wall Epitaxy Growth of MnSb/GaAs; J. Cryst. Growth 173 (1997) 218-221.
    2. H.Ikekame, M. Akita, T. Nakamura, J. Itabashi, K. Sato: Magneto-optical Properties of MnSb Grown by Atomic Hydrogen-Assisted HWE; J. Magn. Soc. Jpn. 21 [4-2] (1997) 349-352.
    3. A. Akita, H. Ikekame, T. Nakamura, J. Itabashi, K.Sato: HWE Growth and Magneto-Optical Spectra of MnSb Thin Films on GaAs Substrates; J. Magn. Soc. Jpn. 21 [4-2] (1997) 353-355.
    4. J. Gordon, H. Ikekame, T. Nakamura, J. Itabashi, H, Nagayoshi and K. Sato: Growth of MnSb Thin Films on CdTe Substrates by Hot-Wall Epitaxy; Jpn. J. Appl. Phys. 36, [5B] (1997) L607-L610.
    5. Y. Morishita, K. Iida, J. Abe and K. Sato: Substrate-Orientation Dependence on Structure and Magnetic Properties of MnAs Epitaxial Films; Jpn. J. Appl. Phys. 36 [8B] (1997) L1100-L1103.

    1996 Academic Year

    1. T. Muro, T. Shishidou, F. Oda, T. Fukawa, H. Yamada, A. Kimura, S. Imada, S. Suga, S.Y. Park, T. Miyahara and K. Sato: Magnetic Circular Dichroism of the S 2p, Co 2p, and Co 3p Core Absorption and Orbital Angular Momentum of the Co 3d State in Low-Spin CoS2, Phys. Rev. B 53, [11] (1996) 7055-7058.
    2. * S.Mitani, K. Takanashi, H. Nakajima, K. Sato, R. Schreiber, P. Grunberg and H. Fujimori: Structural and magnetic properties of Fe/noble metal monoatomic multilayers equivalent to L10 ordered alloys; Proc. MML'95, J. Magn. Magn. Mater.156 (1996) 7-10.
    3. T. Muro, T. Shishidou, F. Oda, T. Fukawa, H. Yamada, A. Kimura, S. Imada, S. Suga, S.Y. Park, T. Miyahara and K. Sato: MCD in Core Absorption Region of CoS2; J. Electron. Spectroscopy and Related Phenomena, 78 (1996) 263-266.
    4. K. Sato, K. Takanashi and H. Fujimori: Magnetic and Optical Properties in Metallic Superlattices: Proc. 14th Symposium on Ion Beam Technology, Hosei Univ., December 1995, (Res, Center of Ion Beam Technology, 1996) 17-24.
    5. K. Sato, H. Ikekame, K. Takanashi, S. Mitami and H. Fujimori: Magneto-Optical Characterization of FeAu Artificial Ordered Alloy; Proc.MORIS'96, Noordeijkerhout, 1996, J.Magn.Soc.Jpn. 20, Suppl. S1 (1996), 35-40.
    6. H. Ikekame and K. Sato: Magneto-Optical Characterization of Epitaxially Grown Manganese Pnictides; Proc. MORIS'96, Noordeijkerhout, 1996, J.Magn.Soc.Jpn. 20, Suppl. S1 (1996),153-156.

    1995 Academic Year

    1. K.Sato, Y.Tosaka, H.Ikekame, M.Watanabe, K.Takanashi and H.Fujimori: Magnetic Polarization of Interfacial Pt layers Witnessed by Magnetooptical Spectra in FePt/Pt Multilayers; Proc. ICMFS/E-MRS Meeting, Duesseldorf, 1994; J. Magn. Magn. Mater. 148 (1995) 206-208.
    2. K.Sato, Y.Tosaka and H.Ikekame: Magnetooptical Spectra of MnSb Crystal between 1.2 and 6.4 eV; Proc. MORIS'94, Tokyo, Sept., 1994, J. Magn. Soc. Jpn. 20, Suppl. S1 (1995) 255-258.
    3. Y. Tosaka, T. Kondo, H. Ikekame, K. Sato: Magneto-Optical Spectra in Single Crystals of MnSb; J. Magn. Soc. Jpn. 19, [2] (1995) 201-204.
    4. H. Ikekame, Y. Morishita and K. Sato: Hot-Wall Growth and Magneto-optical Studies of MnSb Films on GaAs Substrates; J. Magn. Soc. Jpn. 20 [2] (1996) 181-184.
    5. K. Sato, T. Kondo, J. Abe, H. Ikekame, M. Sano, S. Mitani, K. Takanashi and H. Fujimori: Magneto-optical Spectra in Fe(xML)/Au(xML) Artificially Ordered Superlattices; J. Magn. Soc. Jpn. 20 [2] (1996) 197-200.

    1994 Academic Year

    1. M.Fujisawa, S.Suga, T.Mizoguchi, A.Fujimori and K.Sato: Electronic Structures of CuFeS2 and CuAl0.9Fe0.1S2 Studied by Electron and Optical Spectroscopies; Phys. Rev. B49 [11] (1994) 7155-7164.

    1993 Academic Year

    1. Y.Suzuki, T.Katayama, A.Thiaville, K.Sato, M.Taninaka and S.Yoshida: J.Magn. Magn. Mater. 121 (1993) 539.
    2. K.Sato: Analysis of Magneto-Optical Spectra of Pt/Co and Pt/Fe Multilayers Using Optical Constants Determined by Reflectivity Spectra between 0.5 and 25 eV; Proc. Magneto-Optical Recording Symposium, December 7-10, 1992, Tucson Arizona, J. Magn. Soc. Jpn. 17 Suppl. S-1(1993) 11-16.
    3. S.Kijima, K.Sato and T.Koda: Spectra of Magnetic Circular Dichroism of Absorption and Photoluminescence of Eu-Doped CaS Single Crystals; J. Luminesc. 55 (1993) 187-191.
    4. I.Aksenov, T.Yasuda, Y.Segawa and K.Sato: Violet Photoluminescence in Zn-doped CuAlS2; J. Appl. Phys. 74 [3] (1993) 2106-2108.
    5. K. Sato, H. Ikekame, Y. Tosaka, K. Tsuzukiyama, Y. Togami and M. Fujisawa: Fundamental Studies and Application of Short-Wavelength Magnetooptical Effect in Pt-Based Multilayers; Proc. 1st International Symposium of Metallic Multilayers, Kyoto, March 1993, J. Magn. & Magn. Mater. 126 (1993) 572-576.
    6. K. Sato, H. Ikekame, Y. Tosaka and S.-C. Shin: Magnetooptical Spectra in Co-Based Multilayers; Proc. 1st International Symposium of Metallic Multilayers, Kyoto, March 1993, J. Magn. & Magn. Mater. 126 (1993) 553-555.
    7. H.Ikekame, K.Sato, K.Takanashi and H.Fujimori: Magnetooptical Spectra in PtMnSb between 1.2 and 5.9 eV; Proc. 9th Int. Conf. Ternary & Multinary Compounds, Yokohama, August 1993, Jpn. J. Appl. Phys. 32 (1993) Suppl. 32-3, pp. 284-286.
    8. S.Kijima, S.Ohki, K.Sato and K.Kishio: Magnetic Circular Dichroism Spectra of Eu-Doped CaS and SrS Single Crystals; Proc. 9th Int. Conf. Ternary & Multinary Compounds, Yokohama, August 1993, Jpn. J. Appl. Phys. 32 (1993) Suppl. 32-3, pp. 605-607.
    9. .Tosaka, H.Ikekame, K.Urago, S.Kurosawa, K.Sato and S.-C. Shin: Magnetooptical Spectra in Pd/Co Multilayers and Related Alloys; J. Magn. Soc. Jpn. 18 [2] (1994) 389-392.

    1992 Academic Year

    1. Y.Suzuki, T.Katayama, S.Yoshida, K.Tanaka and K.Sato: New Magnetooptical Transition in Ultrathin Fe(100) Films; Phys. Rev. Lett. 68 [22] (1992) 3355-3358.
    2. K.Sato, M.Hirai and T.Tamaki: Magnetic Field Dependence of Magnetocircular Photoluminescence Spectra in Ruby; J. Phys. Soc. Jpn. 61 [10] (1992) 3803-3811.
    3. K.Sato, H.Hongu, H.Ikekame, J.Watanabe, K.Tsuzukiyama, Y.Togami, M.Fujisawa and T.Fukazawa: Magnetooptical Spectra in Pt/Co and Pt/Fe Multilayers; Jpn. J. Appl. Phys. 31 Part 1 [11] (1992) 3603-3607.
    4. K.Sato, H.Ikekame, H.Hongu, M.Fujisawa, K.Takanashi and H.Fujimori: Reflectivity Spectra in As-Polished and Annealed PtMnSb between 0.5 eV and 25 eV Measured by Synchrotron Radiation; Proc. Int. Conf. Ferrites, Tokyo, 1992, pp.1647-1650.
    5. K.Sato, H.Hongu, H.Ikekame, Y.Tosaka, M.Watanabe, K.Takanashi and H.Fujimori Magnetooptical Spectrometer for 1.2 - 5.9 eV Region and its Application to FePt/Pt Multilayers; Jpn. J. Appl. Phys. 32 Part 1 [2] (1993) 989-995.
    6. H. Ikekame, Y. Tosaka, K. Sato, K. Tsuzukiyama, Y. Togami: Magneto-Optical Spectra in Pt-Ni-Based Superlattices and Alloys; J. Magn. Soc. Jpn. 17 [2] (1993) 377-380.

    1991 Academic Year

    1. K.Sato, H.Hongu, K.Tsuzukiyama, J.Watanabe and Y.Togami: Spectra of Magnetooptical Kerr Rotation and Ellipticity in Pt/Co Multilayered Films; Proc. Magneto-Optical Recording Symposium (MORIS91), Tokyo April 1991, J. Magn. Soc. Jpn. 15 Suppl.S1 (1991) 29-32.
    2. * K.Sato and H.Hongu: Magnetooptical Spectra in Pt/Co and Pt/Fe Multilayers; Extended Abstract of 13th Int. Conf. Magnetic Films & Surfaces, Glasgow, August, 1991, 94-95.
    3. K.Sato and M.Hirai: Anomalous Behavior of the Magneto-circular Photoluminescence Line Shape of R1-Line in Ruby (Al2O3:Cr); Proc. Int. Conf. Magnetism, Edinbourgh, J. Magn. Magn. Mater. 104-107 (1992) 944-946.
    4. K.Sato, Y.Aman and H.Hongu: VUV-Reflectivity, Magnetooptical Spectra and Band Structure in Single Crystals of Cr3Te4; Proc. ICM, Edinbourgh, J. Magn. Magn. Mater. 104-107 (1992) 1947-1948.
    5. M. Watanabe, K. Takanashi, H. Fujimori, K. Sato, H. Hongu, S. Honda: Structural Anomaly and Magneto-Optical Properties of FePt/Pt Superlattices; J. Magn. Soc. Jpn. 16 [2] (1992) 329

    1990 Academic Year

    1. K.Sato, S.Matsuda and Y.Kudo: Characterization of CuInSe2 Thin Films Prepared by ICB(Ionized Cluster Beam) Technique; Proc. 8th Int. Conf. Ternary & Multinary Compounds, Kishinev, Sept. 1990, eds. S.I. Radautsan and C.Schwab, (Shtiintsa Press, Kishinev, 1990)vol.1 pp.205-208.
    2. K.Takanashi, K.Sato, J.Watanabe, Y.Sato and H.Fujimori: Magneto-Optical Characterization of C1b-Type Heusler Compounds, Pt1-x/2Mn1+xSb1-x/2 (x=-0.1, 0, and 0.1); Jpn. J. Appl. Phys. 30 [1] (1991) 52-57.

    1989 Academic Year

    1. R. Sato, N. Saito, T. Morishita, H. Kida, K. Chiba: Magneto-Optical Kerr Effect in TbFe/SiO Multilayers; J. Magn. Soc. Jpn. 13 [3] (1989) 513-518.
    2. K.Yasuhiro, K.Sato, K.Tamanoi, K.Shinagawa, T.Saito and T.Tsushima: Optical Absorption Spectra in Cobalt-Substituted Epitaxial Magnetic Garnet Films Measured with Photothermal Deflection Spectroscopy; Jpn. J. Appl. Phys. 28 [4] (1989) L656-658.(Letters)
    3. K.Sato, Y.Aman, M.Hirai and M.Fujisawa: Reflectivity Spectra in Single Crystals of Cr3Te4, Cr2Te3 and Cr2Se3 beteen 0.3 and 23 eV; J. Phys. Soc. Jpn. 59 [2] (1990) 435-438.(Letters)

    1988 Academic Year

    1. K.Sato, T.Iijima, T.Nakajima, K.Yahagi and S.Kobayashi: Characterization of Below-Gap Absorption in Semi-Insulating GaAs:Cr by Magneto-Circular Dichroism Spectrum; Jpn. J. Appl. Phys. 27 [6] (1988) 979-982.
    2. K.Sato, Y.Aman and M.Hirai: Magneto-Optical Effect in a Single Crystal of Cr3Te4; Proc. Int. Conf. Magnetism, Paris, September 1988, J. Phys. (France) 49 (1988) Suppl. C8, 218-219.
    3. K.Sato, H.Kida, M.Fujisawa and T.Kamimura: Optical Reflectivity Spectra and Electronic Structures in Fe7Se8 and Co7Se8; Proc. Int. Conf. Magnetism, Paris, September 1988, J. Phys. (France) 49 (1988) Suppl.C8,37-38.
    4. K.Sato and H.Kida: Calculation of Magneto-Optical Spectra in Compositionally-Modulated Multilayered Films; Proc. Int. Conf. Magnetism, Paris, September 1988, J. Phys. (France) 49 (1988) Suppl.C8,1779-1780.
    5. K.Shinagawa,K.Tamanoi, T.Saito, Y.Aman, K.Sato and T.Tsushima: Cotton-Mouton Effect of Co Substituted Magnetic Garnets; Proc. Int. Conf. Magnetism, Paris, September 1988, J. Phys. (France) 49 (1988) Suppl.C8,959-960.
    6. T.Morishita, R.Sato, K.Sato and H.Kida: Observation of a Strongly Enhanced Magneto-Optical Kerr Effect in Compositionally Modulated TbFe/SiO Films; Proc. Int. Conf. Magnetism, Paris, September 1988, J. Phys. (France) 49 (1988) Suppl. C8,1741-1742.
    7. K. Sato, Y. Aman, K. Tamanoi, T. Saito, K. Shinagawa, T. Tsushima: Cotton-Mouton Spectra in Co-Substituted Magnetic Garnet Films; ; J. Magn. Soc. Jpn. 13 [2](1989) 157-162.
    8. Y. Aman, M. Hirai, M. Murayama, K. Sato: Magneto-Optical Spectra in Cr-Te Compounds; J. Magn. Soc. Jpn. 13 [2](1989) 183-186.

    1987 Academic Year

    1. K.Sato, H.Kida and T.Kamimura: Reflectivity and Magneto-Optical Spectra in a Single Crystals of Ferrimagnetic Fe7Se8; Proc. Int. Symp. Magneto-Optics, Kyoto, 1987, J. Magn. Soc. Jpn. 11, Suppl.S1 (1987) 113-116.
    2. K.Sato, T.Iijima, T.Nakajima and S.Kobayashi: Magneto-Circular Dichroism Spectra in Semi-Insulating GaAs:Cr and InP:Fe; Proc. Int. Symp. Magneto-Optics, Kyoto, 1987, J. Magn. Soc. Jpn. 11, Suppl.S1 (1987) 121-124.
    3. K.Sato, H.Kida and T.Katayama: Interpretation of Magneto-Optical and Reflectivity Spectra in Compositionally Modulated Multilayered Fe/Cu Films; Jpn. J. Appl. Phys. 27 [2] (1988) L237-L239.(Letter)
    4. K. Sato, H. Kida: Analysis of Magneto-Optical Spectra in Compositionally Modulated Multilayered Films; J. Magn. Soc. Jpn. 12 [2] (1988) 329-334.
    5. H. Kida, K. Sato, T. Kamimura: Optical Properties in Fe7Se8 and Co7Se8 Single Crystals; J. Magn. Soc. Jpn. 12 [2] (1988) 273-278.

    1986 Academic Year

    1. K.Sato, T.Iijima and S.Kobayashi: Magneto-Optical Characterization of Semi-Insulating Gallium Arsenide Doped with Chromium; Proc. 4th Conf. Semi-Insulating III-V Materials, Hakone, 1986, (Ohm-sha, 1986) 493.
    2. K.Sato, T.Sekiguchi and T.Miyadai: Optical Observation of 3d-Band Width in CoS2:CoSe2 System; Proc. Int. Conf. Magnetism, San Francisco, 1985, J. Magn. & Magn. Mater. 54-57 (1986) 1033-1035.
    3. M.Fujisawa, M.Taniguchi, S.Shin, H.Daimon, K.Sato and S.Suga: Electronic Structures of CuFeS2 and CuAl0.9Fe0.1S2 Studied by Photoelectron Spectroscopy: Role of Fe 3d Electron States; Proc. Int. Conf. Phys. Semicond., Stockholm (1986) 1137-1140.

    1984 Academic Year

    1. K.Sato: Reflectivity Spectra and Optical Constants of Pyrites (FeS2, CoS2 and NiS2) between 0.2 and 4.4 eV; J. Phys. Soc. Jpn. 53 [5](1984) 1617-1620.(Letter)
    2. K.Sato, H.Takahashi, N.Mohri and S.Minomura: Optically Detected Insulator-Metal Transition in CuFeS2; Proc. 6th Int. Conf. Ternary and Multinary Compounds, Caracas, 1984, Prog. Cryst. Growth & Charact. 10 (1984) 125-132.

    (3)Growth of HiTc superconductors and its Device Application

    2003 Academic Year

    1. T. Ishibashi, K. Yonemitsu, K. Inagaki and K. Sato: Crystal Growth of Submicron-size Bi2Sr2Can-1CunOx Bridge Structures; "Towards the Controllable Quantum States, Mesoscopic Superconductivity and Spintronics", Proc. Int. Symp. Mesoscopic Supersonductivity and Spintronics (MS+S2002), Atsugi4-6, March 2002, World Scientific, Singapore, 2003, pp.196-200.

    2002 Academic Year

    1. T. Ishibashi, K. Yonemitsu, K. Inagaki and K. Sato: Crystal Growth of BiSrCaCuO Thin Films on Submicron-size Step Structures; J. Cryst. Growth 237-239(2002), Part 1, 762-766.
    2. S. Kim, Jungyoon E, K. Lee, T. Ishibashi, K. Sato and B. Friedman: Polaronic quasiparticle injection in organic copper (II) phthalocyanine/Bi2Sr2CaCu2O8+delta tunnel junctions; Appl. Phys. Lett. 80 [14] (2002) 2526-2528.

    2001 Academic Year

    1. K. Lee, S. Kim, B. Friedman, T. Ishibashi, K.Sato and I.Iguchi: Microwave oscillation from BSCCO intrinsic Josephson junction arrays; Proc. Int. Superconductive Electronics Conf. 2001 (ISEC'01), Osaka, June 19-22, 2001, Supercond. Sci. Tech. 13 [12] (2001) 1044-1047.
    2. T. Ishibashi, Kz. Sato, K. Yonemitsu, K. Sato, K. Lee and S. Kim: Spin injection properties and conductance spectra of Co/Au/YBaCuO and Co/Au/BiSrCaCuO tunnel junctions; Proc. Int. Superconductive Electronics Conf. 2001 (ISEC'01), Osaka, June 19-22, 2001, Supercond. Sci. Technol. 14 (2001) 1014-1017.
    3. K. Lee, S. Kim, T. Ishibashi, K.Sato and I.Iguchi: Microwave oscillation from BSCCO intrinsic Josephson junction arrays; Proc. Int. Superconductive Electronics Conf. 2001 (ISEC'01), Osaka, June 19-22, 2001, Supercond. Sci. Technol. 14 [12] (2001) 1044-1047.
    4. K.Yonemitsu, K.Inagaki, T.Ishibashi, K.Sato, S.Kim and K.Lee: Electrical Properties of Bi2Sr2CaCu2Ox Submicron Structures Grown on Patterned Substrates; Proc. The JST International Symposium on Superconducting Device Physics (SDP2001), Tokyo, June 25-28, 2001, Physica C 367 (2002) 414-418.
    5. T. Ishibashi, Kz. Sato, K. Yonemitsu and K. Sato: Spin tunneling in Co/Au/BiSrCaCuO tunnel junction; Proc. Joint MMM-Intermag Conference, San Antonio, Texas, Jan. 7-11, 2001, J. Appl. Phys. 88 (2001) 7672-7674.

    2000 Academic Year

  1. T. Ishibashi, Kz. Sato and K. Sato: Anomalous Zero-bias Behavior in Co/BiSrCaCuO and Au/BiSrCaCuO Tunnel Junctions; Proc. 6th Int. Conf. Materials and Mechanisms of Superconductivity and High Temperature Superconductors, Houston, Texas, February 20-25, 2000, Physica C 341-348 (2000) 1615-1616
  2. T. Ishibashi, Kz. Sato, G. Gu, N. Koshizuka and K. Sato: Tunneling Spectra of Co/I/BiSrCaCuO Tunnel Junctions; Jpn. J. Appl. Phys. 39 Part 2 [4A] (2000), 281-283.
  3. I. Iguchi, K.J. Lee, E. Kume, T. Ishibashi and K. Sato: Nonequilibrium microwave emission due to tunnel injection of quasiparticles into a high-Tc Bi2Sr2CaCu2Oy superconductor; Phys. Rev. B61 [1] (2000) 689-693

    1999”N

  4. T. Ishibashi, T. Kawahara, H. Kaneko and K. Sato>: Submicron-size Fabrication of BSCCO Thin Films by using Patterned Substrates; Proc. Applied Supercunductivity Conference 1998, Palmsprings, IEEE Trans. Appl. Superconductivity 9 [2] (1999) 2383-2386.
  5. T. Kawahara, T. Ishibashi, H. Kaneko, K. Sato, K. Lee and I. Iguchi: Off-axis BSCCO Intrinsic Josephson Junction: Proc. Applied Supercunductivity Conference 1998, Palmsprings, IEEE Trans. Appl. Superconductivity 9 [2] (1999) 4519-4522
  6. K.J. Lee, Wan Wang, I. Iguchi, B. Friedman, T. Ishibashi, and K. Sato: Spin-polarized quasiparticle tunnel injection in a YBa2Cu3Oy/Au/Co junction; Appl. Phys. Lett. 75 [8] (1999) 1149-1151.

    1998”N

  7. T. Ishibashi, K. Sato, K.J. Lee and I. Iguchi: Microwave Properties of Intrinsic Bi2Sr2CaCu2Oy Josephson Junctions on Off-axis Substrate, Proc. 3rd European Conference on Applied Superconductivity, EUCAS'97, Netherlands, June 30-July 3, 1997 Inst. Phys. Conf. Ser. No 158 (IOP Publishing, London, 1998) 527-530.
  8. T. Ishibashi, T. Kawahara, H. Kaneko and K. Sato: Submicron-size Fabrication of Bi2Sr2CaCu2Ox Thin Films by Utilizing Facet Growth; Jpn. J. Appl. Phys. 37 Part 2, [7B] (1998) L863-865.

    1997”N

  9. T. Ishibashi, T. Kawahara, K. Sato, K.J. Lee, I. Iguchi and M. Kawabe: Anisotropic Transport Properties in Twin-Free Bi2Sr2CaCu2Ox Thin Films; Jpn. J. Appl. Phys. 36 Part 1 [12A] (1997) 7175-7176.
  10. K. Lee, I. Iguchi, T. Ishibashi, K. Sato, H. Soutome and M. Kawabe: Josephson Junction Properties of Bi2Sr2CaCu2Oy Bicrystal Junctions Grown by Sequential Deposition Technique Using Molecular Beam Epitaxy; Proc. 1996 Appl. Supercond. Conf., August 25-30, 1996, IEEE Trans. Appl. Superconductivity 7, [2] (1997) 2300-2303.

    1996”N (Part of this study was carried out at Tsukuba Univ. by Dr. Ishibashi)

  11. K. Lee, I. Iguchi, T. Ishibashi and K. Sato: Internal Anisotropic Microwave Frequency Noise in HTSC BSCCO and YBCO Junctions; Advances in Superconductivity IX, Proc. 9th Int. Symp. Superconductivity (ISS'96), Sapporo, October 21-24, (Springer, Tokyo, 1997) 1253-1256.
  12. T. Ishibashi, K. Sato, K.J. Lee, I. Iguchi and M. Kawabe: Crystallographic and Anisotropic Transport Properties in Untwinned Bi2Sr2CaCu2Oy Thin Films; Advances in Superconductivity IX, Proc. 9th Int. Symp. Superconductivity (ISS'96), Sapporo, October 21-24, (Springer, Tokyo, 1997) 1089-1092.
  13. K. Lee, I. Iguchi, T. Ishibashi and M. Kawabe: Josephson transport and crystallographic properties of Bi2Sr2CaCu2Oy junctions on (100) MgO bicrystal substrates; Physica C 257 (1996) 99-104.
  14. Y. Kumagai, K. Ishimoto, R. Mori, K.-M. Tee, T. Ishibashi, M. Kawabe and F. Hasegawa: 4-Monolayer-Height Layer-by-Layer Growth and Increase of the Critical Thicness of Ge Heteroepotaxy on Boron-Peradsorbed Si(111) Surface; Jpn. J. Appl. Phys. 35, [4B] (1996) L476-L478.

    1995”NˆΘ‘O(Ξ‹΄•Žθ‚Μ’}”g‘ε‚Ε‚ΜŒ€‹†¬‰Κ)

  15. T. Ishibashi, H.i Soutome, Y. Okada and M. Kawabe: Bi2Sr2Can-1CunOx Thin Films by Growth Interruption Technique; J. Crystal Growth 150 (1995) 1094-1097.
  16. T. Ishibashi, H. Soutome, Y. Okada and M. Kawabe: Surface Diffusion in Molecular Beam Epitaxy of Bi2Sr2Can-1CunOx IEEE Trans. Aappl. Supercond. 5 [2] (1955) 1805-1809.
  17. T. Ishibashii, Y. Okada and M.o Kawabe: Surface diffusions for Bi2Sr2CuOx+6 Thin Films Grown by Molecular Beam Epitaxy; Jpn. J. Appl. Phys. 33 [6A] (1994) L763-L765.
  18. T. Ishibashi, T. Fujita, K.-H. Song, Y. Okada and M. Kawabe: Bi2Sr2CuOx Thin Films with (011) Vicinal Surfaces Fabricated on Vicinal LaSrGaO4 (110) by Molecular Beam Epitaxy; Jpn. J. Appl. Phys. 32 [2B] (1993) L257-L259.
  19. T. Ishibashi, K.-H. Song, Y. Okada and M. Kawabe: Two-Dimensional Epitaxial Growth of Bi2Sr2CuOx on Tilted SrTiO3(001) Substrates Studied by Reflection High Energy Electron Diffraction; Jpn. J. Appl. Phys. 31 [4A] (1992) L406-L409.
  20. S. Yokoyama, T. Ishibashi, M. Yamagami and M. Kawabe: Atomic Layer Growth of Bi-Sr-Ca-Cu-O by Molecular Beam Epitaxy Using Ozone under UV Irradiation; Jpn. J. Appl. Phys. 30 [1B] (1991) L106-L109.
  21. T. Ishibashi, Y. Okada, S. Yokoyama and M. Kawabe: Layer by Layer Growth of Bi-Sr-Ca-Cu-O Superconducting Films by Molecular Beam Epitaxy; Jpn. J. Appl. Phys. 30 [12B] (1991) 3900-3903.

[Members]

Staffs

Prof. Katsauki Sato (born in 1942, graduated Kyoto Univ. in 1964, finished Master's course in 1966, worked at Broadcasting Science Research Lab of NHK (Japan Broadcasting Corporation: Public Station) until 1984, got Dr. degree from Kyoto Univ. in 1978, became Associate Professor of TUAT in 1984, became Professor in 1989) majoring crystal research and engineering, optical characterization, magneto-optics.

Dr. Takayuki Ishibashi(got PhD at Tsukuba Univ. in 1995, got to this position in 1995) majoring crystal growth of high temperature superconductors.

Dr. Gennadiy Medvedkin (JSPS Fellow for 1999 FY) from Ioffe Physico-Technical Institute (St. Petersburg, Russia)


Graduate Students

T. Nishi(Doctoral course 3rd year), Growth and Optical Studies of Ternary Compound Semiconductors

K. Taguchi(Master's Course 2nd year), Research on FeS2 (Pyrite) Films

K. Terayama(Master's Course 2nd year), Epitaxial Growth of Co-Cr Films (at Hitachi Central Laboratories)

Kz. Sato(Master's Course 2nd year), Superconductor/Ferromagnetic Junctions

R. Misawa(Master's Course 2nd year), Optical Studies of GaAsMn

K. Hayata(Master's Course 2nd year), Magneto-Optical Spectrum Studies

M. Miyamoto(Master's Course 1st year), Nonlinear Magnetooptics

Y. Hasegawa(Master's Course 1st year), Scanning Probe Microscope

K. Yonemitsu(Master's Course 1st year), Superconducting Devices

K. Tsujimoto(Master's Course 1st year), Multinary Semiconductors

H. Takagi(Master's Course 1st year), Magnetic Semiconductors


Undergraduates (4th Grade)

Magnetism: Minami(Nanofabrication), Matsumoto(SNOM), Hosoba(Magnetooptical spectra) Semiconductors: Hirose(Magnetic semiconductors), Yabe(Crystal growth) Superconductor: Inagaki(Superconducting devices)


Secretary

Mrs. Yumiko Hasegawa


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