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Nanoscale magnetism and transport

Research Project

Project/Area Number 09236104
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SHINJO Teruya  Kyoto Univ., Inst. Chem. Res., Prof. Dr., 化学研究所, 教授 (70027043)

Co-Investigator(Kenkyū-buntansha) MAEKAWA Sadamichi  Tohoku Univ. Inst. Mat. Res., Prof. Dr., 金属材料研究所, 教授 (60005973)
MIYAZAKI Terunobu  Tohoku Univ., Dept. Tech., Prof. Dr., 工学部, 教授 (60101151)
SATO Katsuaki  Tokyo A&T Univ. Dept. Tech., Prof. Dr., 工学部, 教授 (50170733)
FUJIMORI Horoyasu  Tohoku Univ. Inst. Mat. Res., Prof. Dr., 金属材料研究所, 教授 (60005866)
ENDOH Yasuo  Tohoku Univ., Inst. Mat. Res., Prof. Dr., 大学院・理学研究科, 教授 (00013483)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥14,500,000 (Direct Cost: ¥14,500,000)
Fiscal Year 1999: ¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 1998: ¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1997: ¥5,000,000 (Direct Cost: ¥5,000,000)
KeywordsMicrofabrication of magnetic materials / Giant magnetoresistance / Tunneling magnetoresistance / 微細加工技術 / 磁性 / 伝導性
Research Abstract

The research of the project in 1999 fiscal year has been carried out by the Core members. Symposia were held twice, at Yokohama and Sendai, respectively. The Symposium at Sendai held in March 8-10 was the last one of the present project and therefore we invited 26 distinguished foreigner guest speakers. The total number of attendance was about 300 and the meeting was very fruitful with active discussion. Latest results on giant magnetoresistance, tunnel magneto-resistance, spin-polarized STM, and various topics on nanoscale magnetic systems were presented. The harvests obtained from the projects, which were mainly presented as posters, were very impressive and appreciated by the foreigner and domestic attendances. The results are of great importance from basic viewpoints and also have potentials for applications. The progress on MRAM technology using TMR elements was introduced. The direction in near future is suggested to be the explorement of novel phenomena in the interplay of magnetism and transport in nanoscale magnetic systems.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (68 results)

All Other

All Publications (68 results)

  • [Publications] T.Shinjo: "Studies on Magnetization Reversal in Submicron Wires and Domain Wall Behaviors"J.Phys. Soc.Jpn. (in press). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Shinjo: "Reduction of Magnetic Moments in Very Thin Cr Layers of Fe/Cr Multilayers : Evidnce from Sn Mossbauer Spectroscopy"Phys. Rev. B. 84. 2243-226 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Shinjo: "Mossbauer Studies of Multilayers and Interfaces"J.Magn. & Magn. Mater. 200. 598-615 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Sato: "Nonlinear Magneto-optical Effect in Fe/Au Superlattices Modulated by Non-Integer Atomic Layers"J.Appl. Phys. (in press). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Sato: "Magneto-optical Spectra of Fe/Au Artificial Superlattices Modulated by Integer and Noninteger Atmic Layers"J.Appl. Phys. 86. 4985-4987 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Miyazaki: "Direct Obsevation of Magnon Excitation in a Ferromagnetic Tunnel Junction Using in Elastic-electron-Tunneling spectioscopy"Jpn. J.Appl. Phys. 38. L1106-L1109 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Miyazaki: "Tunnel Magnetoresistance Effect on Junction With Co Clastiv Layers in Coulomb Blockade Regime"Jpn. J.Appl. Phys. 38. 932-934 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S.Maekawa: "Coulomb Staircase in STM current Through Granular Films"Phys. Rev. B. 61. 46-49 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S.Maekawa: "Enhancement of Spin-Dependent Tunneling with Coulomb Blockade"J.Mag. Mag. Mater. 198. 143-144 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S.Maekawa: "Spin-Inbalance and Magnetoresisitance in Ferromagnet/superconductor/Ferromagnet Double Tunneling Junction"Phys. Rev. Lett. 82. 3911 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y.Endo: "Polarized Neutronrefectivity of Co/Cu multilayers with Co-Cu Mixed Layers at Interfaces between Co and Cu Layers"J Phys. Chem. Solids. 60. 1487-1490 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H.Fujimori: "Giant Magnetoresistance in Insulating Frannlar Films and Planar Tunnerig Junctions"Jpn. J.Appl. Phys. 267. 184-188 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H.Fujimori: "Annealing Effect of Tunnel-Type GMR in Co-Al-O Granular Thin Films"J.Magn. & Magn. Mater. 61. 184-188 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shinjyo: "Studies on Magnetization Reversal in Submicron Wires and Domain Wall Behaviors"J. Phys. Soc. Jpn.. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shinjyo: "Reduction of Magnetic Moments in Very Thin Cr Layers of Fe/Cr Multilayers : Evidence from Sn Mossbauer Spectroscopy"Phys. Rev. B. 84. 2243-2246 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shinjyo: "Mossbauer Studies of Multilayers and Interfaces"J. Magn. & Magn. Mater.. 200. 598-615 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Sato: "Nonlinear Magneto-optical Effect in Fe/Au Superlattices Modulated by Non-Integer Atomic Layers"J. Appl. Phys.. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Sato: "Magneto-optical Spectra of Fe/Au Artificial Superlattices Modulated by Integer and Noninteger Atmic Layers"J. Appl. Phys.. 86. 4985-4987 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Miyazaki: "Direct Observation of Magnon Excitation in a Ferromagnetic Tunnel Junction Using in Elastic-electron-Tunneling spectioscopy"Jpn. J. Appl. Phys.. 38. L1106-L1109 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Miyazaki: "Tunnel Magnetoresistance Effect on Junction With Co Clastiv Layers in Coulomb Blockade Regime"Jpn. J. Appl. Phys.. 38. 932-934 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Maekawa: "Coulonb Staircase in STM current Through Granular Films"Phys. Rev. B. 61. 46-49 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Maekawa: "Enhancement of Spin-Dependent Tunneling with Coulonb Blockaide"J. Mag. Mag. Mater.. 198. 143-144 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] S. Maekawa: "Spin-Inbalance and Magnetoresistance in Ferromagnet/superconductor/Ferromagnet Double Tunneling Junction"Phys. Rev. Lett.. 82. 3911 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Endo: "Polarized Neutronrefectivity of Co/Cu multilayers with Co-Cu Mixed Layers at Interfaces between Co and Cu Layers"J Phys. Chem. Solids. 60. 1487-1490 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H. Fujimori: "Giant Magnetoresistance in Insulating Frannlar Films and Planar Tunnerig Junctions"Jpn. J. Appl. Phys.. 267. 174-188 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H. Fujimori: "Annealing Effect of Tunnel-Type GMR in Co-Al-O Granular Thin Films"J. Magn. & Magn. Mater.. 61. 184-188 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Shinjo: "Studies on Magnetization Reversal in Submicron Wires and Domain Wall Behaviors"J. Phys. Soc. Jpn.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Shinjo: "Reduction of Magnetic Moments in Very Thin Cr Layers of Fe/Cr Multilayers : Evidence from Sn Mossbauer Spectroscopy"Phys. Rev. B. 84. 2243-2246 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Shinjo: "Mossbauer Studies of Multilayers and Interfaces"J. Magn. & Magn. Mater.. 200. 598-615 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Sato: "Nonlinear Magneto-optical Effect in Fe/Au Superlattices Modulated by Non-Integer Atomic Layers"J. Appl. Phys.. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Sato: "Magneto-optical Spectra of Fe/Au Artificial Superlattices Modulated by Integer and Noninteger Atomic Layers"J. Appl. Phys.. 86. 4985-4987 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Miyazaki: "Direct Observation of Magnon Excitation in a Ferromagnetic Tunnel Junction Using in Elastic-electron-Tunneling spectioscopy"Jpn. J. Appl. Phys.. 38. L1106-L1109 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Miyazaki: "Tunnel Magnetoresistance Effect on Junction With Co Clastiv Layers in Coulomb Blockade Regime"Jpn. J. Appl. Phys.. 38. 932-934 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S. Maekawa: "Coulonb Staircase in STM current Through Granular Films"Phys. Rev. B. 61. 46-49 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] S. Maekawa: "Enhancement of Spin-Dependent Tunneling with Coulonb Blockaide"J. Mag. Mag. Mater.. 198. 143-144 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S. Maekawa: "Spin-Inbalance and Magnetoresistance in Ferromagnet/superconductor/Ferromagnet Double Tunneling Junction"Phys. Rev. Lett.. 82. 3911 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y. Endo: "Polarised Neutronrefectivity of Co/Cu multilayers with Co-Cu Mixed Layers at Interfaces between Co and Cu Layers"J Phys. Chem. Solids. 60. 1487-1490 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Fujimori: "Giant Magnetoresistance in Insulating Frannlar Films and Planar Tunnerig Junctions"Jpn. J. Appl. Phys.. 267. 184-188 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Fujimori: "Annealing Effect of Tunnel-Type GMR in Co-Al-O Granular Thin Films"J. Magn. & Magn. Mater.. 61. 184-188 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 壬生 攻: "交換スプリング二層膜のブロッホ磁壁型磁気構造と磁気抵抗" 日本応用磁気学会誌. 22・4-2. 613-616 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nagahama: "The Magnetization Process and Magnetoresistance of Exchange-spring Bilayer Systems" J.Phys.D: Appl.Phys.31. 43-49 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 新庄輝也: "微小領域と磁性と伝導" 固体物理. 34・1. 10-16 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Mibu: "Magnetic Anisotropy in Fe/rare-earth Multilayers" Hyperfine Interactions. 113. 287-293 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 濱田 直: "^<57>FeメスバウアープローブによるCo/Au人工格子の磁気構造" 日本応用磁気学会誌. 22・4-2. 405-408 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Mibu: "Preparation and Mossbauer Study of Epitaxial Cr/Sn Multilayers" J.Phys.Soc.Jpn.67・8. 2633-2636 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Mibu: "Magnetoresistance of Bloch-wall-type Magnetic Structures Induced in NiFe/CoSm Exchange-spring Bilayers" Phys.Rev.B. 58・10. 6442-6446 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 宮崎照宣: "トンネル磁気抵抗効果研究の現状" まてりあ(日本金属学会会報). 37. 724-730 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Ando: "Analysis of the Interface in Ferromagnet / insulator Junction by Inelastic-electron-tunneling-spectroscopy" J.Magn.Magn.Mater.(in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Kubota: "Magnetoresistance of Single and Double Tunnel Junctions Formed by Direct Sputtering Using Al_2O_3 Target" J.Magn.Soc.Jpn.23. 67-69 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Sato: "Nonlinear Magneto-optical Effect in Fe/Au Superlattices" J.Magn.Soc.Jpn.23・1-2. 352-353 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Ishibashi: "Magneto-optical Imaging by Scanning Near-field Optical Microscope Using Polarization Modulation" J.Magn.Soc.Jpn.23・1-2. 712-714 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Ishibashi: "Submicron-size Fabrication of Bi_2Sr_2CaCu_2O_x Thin Films by Utilizing Facet Growth" Jpn.J.Appl.Phys.37・Part2. L863-L865 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] P.M.Levy: "Range Dependence of Interlayer Coupling" Phys.Rev.B. 58・9. 5588-5593 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Takahashi: "Effect of Coulomb Blockade on Magnetoresistance in Ferromagnetic Tunnel Junctions" Phys.Rev.Lett.80・8. 1758-1761 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Maekawa: "Electronic Structure in Manganites" J.Magn.Magn.Mater.177-181. 850-853 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kawahito: "Effects of Intra-site Coulomb Interaction on Quantized Conductance in a Quantum wire between an STM-tip and a Metal Surface" Surface Science. 409. L709-L714 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kawahito: "Quantum Transport in an Atom-sized Wire between a Tip of a Scanning Tunneling Microsope and a Metal Surface at Finite Temperatures" J.Appl.Phys.85. 947-952 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Z.J.Wang: "FMR Investigationof Magnetic Anisotropies in Fe/Au Superlattices" J.Magn.Magn.Mater.188. L269-L274 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] S.Mitani: "Enhanced Magnetoresistance in Insulating Granular Systems: Evidence for Higher-order Tunneling" Phys.Rev.Lett.81・13. 2799-2802 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 高梨弘毅: "金属人工格子とグラニュラー構造物質-巨大磁気抵抗効果とその周辺の話題-" 金属. 68・6. 45-52 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 佐藤勝昭: "磁気工学ハンドブック" 朝倉書店, 1385 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Shinjo: "Magnetism and Magnetoresistance of Multilayers Prepared on Microstructured Substrates" Acta Phys.Polonica. 91. 27-36 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Shinjo: "Nanostructured Magnetism : Studies of Multilayers Prepaed on Microstructured Substerates" J.Magn.& Magn.Mater.177. 31-36 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] N.Tezuka: "Barrier Height Dependence of MR ratios in Fe/Al-oxide/Fe Junctions" J.Magn.& Magn.Mater.177. 1283-1284 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Morishita: "Substrate-orientation Dependent Structure and Magnetic Properties of MnAs Epitaxial Films" Jpn.J.Appl.Phys.36・8B. 1100-1103 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Takahashi: "Effect of Coulomb Blockade on Magnetoresistance in Ferromagnetic Tunneling Junctions" Phys.Rev.Lett.80・5. 1758-1761 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Takanashi: "Oscillatory Perpendicular Magnetic Anisotropy and Lattice Plane Spacing in Fe/Au Superlattices" Appl.Phys.Lett.72・6. 737-739 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Mori: "Quantized Conductance of One-Dimensional Doped Mott Insulator" J.Phys.Soc.Jpn.66・11. 3363-3366 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2019-02-15  

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