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    Magnetic metal powder and method of producing the powder
    6.
    发明申请
    Magnetic metal powder and method of producing the powder 有权
    磁性金属粉末和粉末的制造方法

    公开(公告)号：US20110005353A1

    公开(公告)日：2011-01-13

    申请号：US12292063

    申请日：2008-11-12

    申请人： Kazuyuki Tohji

    发明人： Kazuyuki Tohji

    IPC分类号： B22F9/16

    CPC分类号： B82Y25/00 ,  B22F9/24 ,  C22C1/0491 ,  H01F1/0063 ,  H01F1/065 ,  H01F1/068

    摘要： A magnetic metal powder having fluidity is provided which is composed of FePt nanoparticles synthesized by the polyol synthesis method that possess fct (face-centered tetragonal) structure and exhibit crystal magnetic anisotropy from immediately after synthesis. Specifically, there is provided a magnetic metal powder having fluidity which is composed of magnetic metal particles whose main components and the contents thereof are represented by the following general formula (1): [TXM1-X]YZ1-Y  (1), where T is one or both of Fe and Co, M is one or both of Pt and Pd, Z is at least one member selected from the group composed of Ag, Cu, Bi, Sb, Pb and Sn, X represents 0.3˜0.7, and Y represents 0.7˜1.0, the balance being impurities unavoidably incorporated during production, which magnetic metal powder has a volumetric ratio of ferromagnetic structure (face-centered tetragonal ratio) as measured by Mossbauer spectroscopy in the range of 10˜100%, saturation magnetization σs of 20 emu/g or greater, and average primary particle diameter by transmission electron microscopic observation (TEM) of 30 nm or less.

    摘要翻译： 提供具有流动性的磁性金属粉末，其由具有fct（面心四方）结构的多元醇合成方法合成的FePt纳米颗粒组成，并在合成后立即显示晶体磁各向异性。 具体地说，提供一种具有流动性的磁性金属粉末，其主要成分和含量由以下通式（1）表示的磁性金属颗粒组成：[TXM1-X] YZ1-Y（1），其中T 是Fe和Co中的一种或两种，M是Pt和Pd中的一种或两种，Z是选自由Ag，Cu，Bi，Sb，Pb和Sn组成的组中的至少一种，X表示0.3〜0.7， Y表示0.7〜1.0，余量是生产过程中不可避免地掺入的杂质，该磁性金属粉末具有通过Mossbauer光谱法测量的铁磁结构体积比（面心四边形比）为10〜100％，饱和磁化强度 的20emu / g以上，透射电子显微镜观察（TEM）的平均一次粒径为30nm以下。

    Magnetic metal powder and method of producing the powder
    7.
    发明授权
    Magnetic metal powder and method of producing the powder 有权
    磁性金属粉末和粉末的制造方法

    公开(公告)号：US08157889B2

    公开(公告)日：2012-04-17

    申请号：US12292063

    申请日：2008-11-12

    申请人： Kazuyuki Tohji

    发明人： Kazuyuki Tohji

    IPC分类号： B22F9/18

    CPC分类号： B82Y25/00 ,  B22F9/24 ,  C22C1/0491 ,  H01F1/0063 ,  H01F1/065 ,  H01F1/068

    摘要： A magnetic metal powder having fluidity is provided which is composed of FePt nanoparticles synthesized by the polyol synthesis method that possess fct (face-centered tetragonal) structure and exhibit crystal magnetic anisotropy from immediately after synthesis. Specifically, there is provided a magnetic metal powder having fluidity which is composed of magnetic metal particles whose main components and the contents thereof are represented by the following general formula (1): [TXM1−X]YZ1−Y  (1), where T is one or both of Fe and Co, M is one or both of Pt and Pd, Z is at least one member selected from the group composed of Ag, Cu, Bi, Sb, Pb and Sn, X represents 0.3˜0.7, and Y represents 0.7˜1.0, the balance being impurities unavoidably incorporated during production, which magnetic metal powder has a volumetric ratio of ferromagnetic structure (face-centered tetragonal ratio) as measured by Mossbauer spectroscopy in the range of 10˜100%, saturation magnetization σs of 20 emu/g or greater, and average primary particle diameter by transmission electron microscopic observation (TEM) of 30 nm or less.

    摘要翻译： 提供具有流动性的磁性金属粉末，其由具有fct（面心四方）结构的多元醇合成方法合成的FePt纳米颗粒组成，并在合成后立即显示晶体磁各向异性。 具体地说，提供一种具有流动性的磁性金属粉末，其主要成分和含量由以下通式（1）表示的磁性金属颗粒组成：[TXM1-X] YZ1-Y（1），其中T 是Fe和Co中的一种或两种，M是Pt和Pd中的一种或两种，Z是选自由Ag，Cu，Bi，Sb，Pb和Sn组成的组中的至少一种，X表示0.3〜0.7， Y表示0.7〜1.0，余量是生产过程中不可避免地掺入的杂质，该磁性金属粉末具有通过Mossbauer光谱法测量的铁磁结构体积比（面心四边形比）为10〜100％，饱和磁化强度 的20emu / g以上，透射电子显微镜观察（TEM）的平均一次粒径为30nm以下。