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Neutron scattering spectroscopic study on spin dynamics of metallic ferromagnets and a practical use of high-luminosity neutron monochromators

Neutron scattering spectroscopic study on spin dynamics of metallic ferromagnets and a practical use of high-luminosity neutron monochromators
金属铁磁体自旋动力学的中子散射光谱研究及高光度中子单色仪的实际应用
批准号:
22340089
负责人:
HIRAKA Haruhiro
金额:
$5.74万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
2010
资助国家:
日本
项目状态:
已结题
起止时间:
2010-04-01 至 2013-03-31

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中文摘要
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英文摘要
Spin dynamics of metallic magnets were studied by using pulsed neutrons and reactor-based neutrons. In particular, for a metallic antiferromagnet system (Mn,Fe)3Si, we succeeded in observing magnetic excitations in a wide energy range of 1~100 meV. As a result, a switching of spin dynamics from localized-spin nature to itinerant-electron spin one was clarified.At the same time, we developed a new type of neutron-monochromator crystals and revealed that Ge-semiconductor crystals, which were plastically deformed in a curved shape, were available for neutron-focusing-monochromator components.
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会议论文
金属強磁性体CoS_2における常磁性磁気相関の偏極中性子散乱研究
金属铁磁材料CoS_2中顺磁磁关联的偏振中子散射研究
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者: [平賀晴弘, 脇本秀一, 武田全康, 加倉井和久]
通讯作者: 加倉井和久
Fe-doping effects on magnetism in hole-type superconductors of (Bi,Pb)2Sr2CuO6
Fe掺杂对(Bi,Pb)2Sr2CuO6空穴型超导体磁性的影响
DOI: --
发表时间: 2010
期刊: J. Phys. Conference Series
影响因子: --
作者: [H. Hiraka, S. Wakimoto, M. Takeda, K. Kakurai, D. Matsumura, Y. Nishihata, J. Mizuki, K. Yamada;]
通讯作者: K. Yamada;
Incommensurate spin correlations induced by magnetic Fe ions substituted into overdoped Bi_<1.75>Pb_<0.35>Sr_<1.90>Cu_<0.91>Fe_<0.09>O_<6+z>
磁性Fe离子取代过掺杂Bi_<1.75>Pb_<0.35>Sr_<1.90>Cu_<0.91>Fe_<0.09>O_<6 z>引起的不相称自旋相关性
DOI: --
发表时间: 2010
期刊: Phys.Rev.B
影响因子: --
作者: [H.Hiraka, 他14名]
通讯作者: 他14名
Neutron Monochromator Development at IMR Tohoku University
IMR 东北大学开发中子单色仪
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者: [H.Hiraka, 他11名]
通讯作者: 他11名
50
    Interrelation between charge- and spin-density modulation in high-Tc superconductors
    • 批准号:
      19540358
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.91万
    • 财政年份:
      2007
    • 负责人:
      HIRAKA Haruhiro
    • 依托单位:
    Reinvestigation of spin-density wave of metallic Cr by neutron scattering-Search for a connection to stripe order--
    • 批准号:
      16540303
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.3万
    • 财政年份:
      2004
    • 负责人:
      HIRAKA Haruhiro
    • 依托单位:
    海外基金