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Study on the Anomalous Magnetoelectric Effect of Yttrium Iron Garnet by 57Fe NMR

Study on the Anomalous Magnetoelectric Effect of Yttrium Iron Garnet by 57Fe NMR
57Fe NMR研究钇铁石榴石的反常磁电效应
批准号:
20540332
负责人:
ASAI Kichizo
金额:
$3.0万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2008
资助国家:
日本
项目状态:
已结题
起止时间:
2008 至 2010

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中文摘要
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英文摘要
The present study aims to elucidate the anomalous magneto-electric effect in yttrium iron garnet(YIG). The Debye-type magnetic and electric relaxations observed below 300 K both arise from Fe2+ accompanied by oxygen vacancies in YIG. It has been found that the charge transfer among 16a sites persists down to 4 K resulting in the valence fluctuation between Fe2+ and Fe3+. A correlation between the magnetic anisotropy and the electric polarization arising from Fe2+ in 16a sites is suggested to be the origin of the anomalous magneto-electric effect in YIG.
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Significant softening of C66 and hiddenorder parameter in the magnetic order edstate of La_<2-x> Ca_xCoO_4(0. 4≦x≦0. 7)
La_<2-x> Ca_xCoO_4(0. 4≤x≤0. 7)磁序ED态中C66显着软化和隐序参数
DOI: --
发表时间: 2008
期刊: Phys. Rev
影响因子: --
作者: [T. Horigane, T. Kobayashi, M. Suzuki, K. Abe, K. Asai, and J. Akimitsu]
通讯作者: and J. Akimitsu
Crystal Structure of Six-Layer Ba_<1-x> Sr_xRuO_3
六层Ba_<1-x>Sr_xRuO_3的晶体结构
DOI: --
发表时间: 2009
期刊: J. Phys. Soc. Jpn
影响因子: --
作者: [Y. Kobayashi, T. Ohishi, T. Kaneko, M. Iwata, and K. Asai]
通讯作者: and K. Asai
電気通信大学大学院修士学位論文(1)大澤明弘「元素置換したイットリウム鉄ガーネットのNMRによる研究」(2012年3月)
电气通信大学研究生院硕士学位论文(1)大泽明宏“元素取代钇铁石榴石的NMR研究”(2012年3月)
DOI: --
发表时间:
期刊:
影响因子: --
作者: []
通讯作者:
DOI: 10.1143/jpsj.81.044708
发表时间: 2012-04-01
期刊: JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
影响因子: 1.7
作者: [Kobayashi, Yoshihiko, Kamogawa, Masafumi, Asai, Kichizo]
通讯作者: Asai, Kichizo
23
    Investigation of the Spin-Phase Separation in LaCoO3 by High-field Magnetization
    • 批准号:
      24540365
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $3.24万
    • 财政年份:
      2012
    • 负责人:
      ASAI Kichizo
    • 依托单位:
    Magnetoelectric Effects in Ferromagnetic Oxides with the Double Perovskite Structure
    • 批准号:
      18540342
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.45万
    • 财政年份:
      2006
    • 负责人:
      ASAI Kichizo
    • 依托单位:
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    • 批准号:
      16540310
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.37万
    • 财政年份:
      2004
    • 负责人:
      ASAI Kichizo
    • 依托单位:
    Lattice anomaly associaterd with the magnetic order in a re-entrant superconductor Ho_<1-x>Y_xNi_2B_2C
    • 批准号:
      14540331
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $1.92万
    • 财政年份:
      2002
    • 负责人:
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    • 依托单位:
    海外基金