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Control of magnetism of magnetic thin films and nanowires by surface chemical modification studied by the surface magnetization-induced second harmonic generation technique

Research Project

Project/Area Number 15201029
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanomaterials/Nanobioscience
Research InstitutionInstitute for Molecular Science (2004-2005)
Okazaki National Research Institutes (2003)

Principal Investigator

YOKOYAMA Toshihiko  Institute for Molecular Science, Department of Molecular Structure, Professor, 分子構造研究系, 教授 (20200917)

Co-Investigator(Kenkyū-buntansha) NAKAGAWA Takeshi  Institute for Molecular Science, Department of Molecular Structure, Research Associate, 分子構造研究系, 助手 (80353431)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥47,320,000 (Direct Cost: ¥36,400,000、Indirect Cost: ¥10,920,000)
Fiscal Year 2005: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2004: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
Fiscal Year 2003: ¥29,120,000 (Direct Cost: ¥22,400,000、Indirect Cost: ¥6,720,000)
Keywordsmagnetic thin films / magnetization-induced second harmonic generation / X-ray magnetic circular dichroism / magneto-optical Kerr effect / perpendicular magnetization / magnetic anisotropy / 磁化誘起第二高調波発生法 / 磁気的第二高調波発生法
Research Abstract

Magnetic properties of metal thin films, wires and clusters have attracted much interest in recent years. This project aimed the control of the magnetic properties by means of surface chemical techniques such as adsorption and deposition of atoms and molecules on the metal thin films. As a new powerful measurement equipment, we have prepared the system of the etization induced second harmonic generation (MSHG) method and tried to apply this technique to some interesting magnetic systems. This technique is known to be very surface sensitive and is one of the most suitable methods for the present purposes. As the other measurement techniques, we have employed the x-ray magnetic circular dichroism (XMCD) and the magneto-optical Kerr effect (MOKE).
We have first investigated the Ag-coated Co/Cu(1 1 17) system, which inherently shows a magnetic easy axis along the step while the easy axis becomes the step perpendicular direction after Ag deposition. In order to understand the mechanism of the spin reorientation transition, we have measured the magnetization curves using the MSHG and have found unique curves that could not be obtained by the MOKE. By combining the XMCD and MOKE results, we have discussed the microscopic mechanism of the spin transition.
We have subsequently examined the Fe films on Ni/Cu(OO1). The previous study indicated that this system shows an exchange bias, this leading to the possibility of perpendicular exchange interaction. If this is true, this is the first thin film system with perpendicular exchange interaction within single magnetic phase systems. Actually, we have found beautiful magnetization curves along the direction perpendicular to the magnetic field. This system is further being investigated by means of MOKE and XMCD.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (26 results)

All 2006 2005 2004 Other

All Journal Article (22 results) Publications (4 results)

  • [Journal Article] X線磁気円二色性、磁気光学Kerr効果による磁性超薄幕のスピン再配列相転移2006

    • Author(s)
      中川剛志, 横山利彦
    • Journal Title

      表面科学 27

      Pages: 272-277

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Spin reorientation transitions of magnetic metal ultrathin films by means of x-ray magnetic circular dichroism and magneto-optical Kerr effect(in Jananese)2006

    • Author(s)
      T.Nakagawa, T.Yokoyama
    • Journal Title

      J.Surf.Sci.Soc.Jpn.(Hyoumen Kagaku) 27

      Pages: 272-277

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Opposite spin reorientation transitions driven by a magnetic orbital moment : Ultrathin Ni films on Cu surfaces2005

    • Author(s)
      T.Nakagawa, H.Watanabe, T.Yokoyama
    • Journal Title

      Phys. Rev. B 71

      Pages: 235403-235403

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Electronic states and local structures of the photomagnetic Cu-Mo cyanides studied by x-ray absorption fine structure spectroscopy2005

    • Author(s)
      X.-D.Ma, T.Yokoyama et al.
    • Journal Title

      Phys. Rev. B 72

      Pages: 94107-94107

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Effect of Adsorbate Carbon on Spin Reorientation Transitions in Cu-Capped Ultrathin Ni Films on Cu(001)2005

    • Author(s)
      T.Nakagawa, H.Watanabe, T.Yokoyama
    • Journal Title

      Surf. Sci. 599

      Pages: 262-269

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Spin-reorientation transition of Ni/Cu (100) and CO/Ni/Cu(100) : Separation of the surface and bulk components2005

    • Author(s)
      K.Amemiya, T.Yokoyama et al.
    • Journal Title

      Phys. Rev. B 71

      Pages: 214420-214420

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Opposite spin reorientation transitions driven by a magnetic orbital moment : Ultrathin Ni films on Cu surfaces2005

    • Author(s)
      T.Nakagawa, H.Watanabe, T.Yokoyama
    • Journal Title

      Phys.Rev.B 71

      Pages: 235403-235403

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Electronic states and local structures of the photomagnetic Cu-Mo cyanides studied by x-ray absorption fine structure spectroscopy2005

    • Author(s)
      X.-D.Ma, T.Yokoyama et al.
    • Journal Title

      Phys.Rev.B 72

      Pages: 94107-94107

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Effect of Adsorbate Carbon on Spin Reorientation Transitions in Cu-Capped Ultrathin Ni Films on Cu(001)2005

    • Author(s)
      T.Nakagawa, H.Watanabe, T.Yokoyama
    • Journal Title

      Surf.Sci. 599

      Pages: 262-269

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Spin-reorientation transition of Ni/Cu (100) and CO/Ni/Cu(100) : Separation of the surface and bulk components2005

    • Author(s)
      K.Amemiya, T.Yokoyama et al.
    • Journal Title

      Phys.Rev.B 71

      Pages: 214420-214420

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] CO Induced Spin Reorientation Transition of Co/Pd(111) Studied by XMCD and XPS2005

    • Author(s)
      D.Matsumura, T.Yokoyama et al.
    • Journal Title

      Phys.Script. T115

      Pages: 583-585

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Direct Observation of Magnetic Depth Profile with a Depth-Resolved X-Ray Magnetic Dichroism Technique2005

    • Author(s)
      K.Amemiya, T.Yokoyama et al.
    • Journal Title

      Phys.Script. T115

      Pages: 1035-1037

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Spin-reorientation transition of Ni/Cu (100) and CO/Ni/Cu (100) : Separation of the surface and bulk components of the-x-ray magnetic circular dichroism spectrum2005

    • Author(s)
      K.Amemiya, T.Yokoyama et al.
    • Journal Title

      Phys.Rev.B 71

      Pages: 214420-214420

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Electronic states and local structures of the photomagnetic Cu-Mo cyanides Cu_2Mo(CN)_8・H_2O and Cs_<0.5>Cu_<1.75>Mo(CN)_8-1.5H_2O studied by x-ray absorption fine structure spectroscopy2005

    • Author(s)
      X.-D.Ma, T.Yokoyama et al.
    • Journal Title

      Phys.Rev.B 72

      Pages: 94107-94107

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Opposite spin reorientation transitions driven by magnetic orbital moment : ultrathin Ni films on Cu surfaces2005

    • Author(s)
      T.Nakagawa, T.Yokoyama et al.
    • Journal Title

      Phys.Rev.B (印刷中)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Direct observation of magnetic depth profiles of thin Fe films on Cu(100) and Ni/Cu(100) with the depth-resolved x-ray magnetic circular dichroism2004

    • Author(s)
      K.Amemiya, T.Yokoyama et al.
    • Journal Title

      Appl.Phys.Lett. 84

      Pages: 936-938

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Substrate dependence of self-assembly of alkanethiol : X-ray absorption fine structure study2004

    • Author(s)
      H.Kondoh, T.Yokoyama et al.
    • Journal Title

      J.Phys.Chem.B 108

      Pages: 12946-12954

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Structure and magnetic properties of the single-molecule magnet [Mn_<11>CrO_<12>(O_2CCH_3)_<16>(H_2O)_4]・2CH_3COOH・4H_2O2004

    • Author(s)
      H.Hachisuka, T.Yokoyama et al.
    • Journal Title

      Phys.Rev.B 70

      Pages: 104427-104427

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Biscopper complexes of meso-aryl-substituted hexaphyrin : Gable structures and varying antiferromagnetic coupling2004

    • Author(s)
      S.Shimizu, T.Yokoyama et al.
    • Journal Title

      J.Am.Chem.Soc. 126

      Pages: 12280-12281

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Direct observation of oscillatory behavior in the surface magnetization of Fe thin films grown on a Ni/Cu(100) film2004

    • Author(s)
      K.Amemiya, T.Yokoyama et al.
    • Journal Title

      Phys.Rev.B 70

      Pages: 195405-195405

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effect of surface chemisorption on the spin reorientation transition in magnetic ultrathin Fe film on Ag(001)

    • Author(s)
      X.-D.Ma, T.Nakagawa, T.Yokoyama
    • Journal Title

      Surf. Sci. (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Effect of surface chemisorption on the spin reorientation transition in magnetic ultrathin Fe film on Ag(001)

    • Author(s)
      X.-D.Ma, T.Nakagawa, T.Yokoyama
    • Journal Title

      Surf.Sci. (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] T.Yokoyama, D.Matsumura, K.Amemiya, S.Kitagawa, N.Suzuki, T.Ohta: "Spin reorientation transitions of ultrathin Co/Pd(111) films induced by chemisorption : x-ray magnetic circular dichroism study"J.Phys.Condens.Matter. 15. S537-S546 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Amemiya, S.Kitagawa, D.Matsumura, T.Yokoyama, T.Ohta: "Development of a depth-resolved x-ray magnetic circular dichroism : application to Fe/Cu(100) ultrathin films"J.Phys.Condens.Matter. 15. S561-S572 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Okamoto, K.Kohdate, K.Nagai, J.Miyawaki, H.Kondoh, T.Yokoyama, A.Nojima, T.Ohta: "Development of light-modulated XAFS spectroscopy"J.Synchrotron Radiat.. 10. 242-247 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Yokoyama, K.Takahashi, O.Sato: "Metastable photoinduced phase of Cu(II) ethylenediamine complexes studied by x-ray-absorption fine-structure spectroscopy"Phys.Rev.B. 67. 172104 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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