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    Magneto-resistive effect type head
    1.
    发明授权
    Magneto-resistive effect type head 失效
    磁阻效应型头

    公开(公告)号：US06404604B2

    公开(公告)日：2002-06-11

    申请号：US09819811

    申请日：2001-03-29

    申请人： Shiroyasu Odai ,  Matahiro Komuro

    发明人： Shiroyasu Odai ,  Matahiro Komuro

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3133 ,  G11B5/3903 ,  G11B5/40 ,  G11B2005/3996 ,  Y10T29/49048

    摘要： In a magneto-resistive effect type head having provided between a lower shield layer and an upper shield layer an MR sensor with a magneto-resistive effect or a gigantic magneto-resistive effect; electrode layers electrically connected to the MR sensor; and lower and upper insulating layers magnetically and electrically isolating the MR sensor and the electrode layer from the shield layers, when the gap length is reduced and the lower and upper insulating layers are decreased in thickness, the insulating layers are more liable to a dielectric breakdown by static electricity produced in the manufacturing process of the magnetic head. In a magneto-resistive effect head, the portion of the insulating layer in which the MR sensor 30 and the lower or upper shield layer 10 or 60 do not face each other (in other words, the second lower insulating layer 22 or the second upper insulating layer 52) is formed by a lower-resistivity insulating film than the other portion of the insulating layer in which the MR sensor and the layers 10 or 60 face each other (in other words, the first lower insulating layer 21 or the first upper insulating layer 51). If electric charge accumulates in the electrode layer or shield layer by static electricity, a minute current flows through the low-resistivity insulating film, reducing a potential difference between the electrode layer and the shield layer and therefore the insulating layers can be prevented from breaking by static electricity.

    摘要翻译： 在具有下屏蔽层和上屏蔽层之间的具有磁阻效应或巨大磁阻效应的MR传感器的磁阻效应型磁头中， 电连接到MR传感器的电极层; 并且下绝缘层和上绝缘层将MR传感器和电极层与屏蔽层电磁隔离，当间隙长度减小并且下绝缘层和上绝缘层的厚度减小时，绝缘层更容易发生介电击穿 通过在磁头的制造过程中产生的静电。 在磁阻效应头中，MR传感器30和下或上屏蔽层10或60不面对的绝缘层的部分（换句话说，第二下绝缘层22或第二上层 绝缘层52）通过比MR传感器和层10或60彼此面对的绝缘层的另一部分（换句话说，第一下绝缘层21或第一上层 绝缘层51）。 如果电荷通过静电积累在电极层或屏蔽层中，则微小电流流过低电阻绝缘膜，减小了电极层与屏蔽层之间的电位差，因此可以防止绝缘层破裂 静电。

    Magneto-resistive effect type head
    2.
    发明授权
    Magneto-resistive effect type head 失效
    磁阻效应型头

    公开(公告)号：US06219206B1

    公开(公告)日：2001-04-17

    申请号：US09383214

    申请日：1999-08-26

    申请人： Shiroyasu Odai ,  Matahiro Komuro

    发明人： Shiroyasu Odai ,  Matahiro Komuro

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3133 ,  G11B5/3903 ,  G11B5/40 ,  G11B2005/3996 ,  Y10T29/49048

    摘要： In a magneto-resistive effect type head having provided between a lower shield layer and an upper shield layer an MR sensor with a magneto-resistive effect or a gigantic magneto-resistive effect; electrode layers electrically connected to the MR sensor; and lower and upper insulating layers mangetically and electrically isolating the MR sensor and the electrode layer from the shield layers, when the gap length is reduced and the lower and upper insulating layers are decreased in thickness, the insulating layers are more liable to a dielectric breakdown by static electricity produced in the manufacturing process of the magnetic head. In a magneto-resistive effect head, the portion of the insulating layer in which the MR sensor 30 and the lower or upper shield layer 10 or 60 do not face each other (in other words, the second lower insulating layer 22 or the second upper insulating layer 52) is formed by a lower-resistivity insulating film than the other portion of the insulating layer in which the MR sensor and the layers 10 or 60 face each other (in other words, the first lower insulating layer 21 or the first upper insulating layer 51). If electric charge accumulates in the electrode layer or shield layer by static electricity, a minute current flows through the low-resistivity insulating film, reducing a potential difference between the electrode layer and the shield layer and therefore the insulating layers can be prevented from breaking by static electricity.

    摘要翻译： 在具有下屏蔽层和上屏蔽层之间的具有磁阻效应或巨大磁阻效应的MR传感器的磁阻效应型磁头中， 电连接到MR传感器的电极层; 并且下绝缘层和上绝缘层将MR传感器和电极层与屏蔽层电气隔离，当间隙长度减小并且下绝缘层和上绝缘层的厚度减小时，绝缘层更容易受到介电击穿 通过在磁头的制造过程中产生的静电。 在磁阻效应头中，MR传感器30和下或上屏蔽层10或60不面对的绝缘层的部分（换句话说，第二下绝缘层22或第二上层 绝缘层52）通过比MR传感器和层10或60彼此面对的绝缘层的另一部分（换句话说，第一下绝缘层21或第一上层 绝缘层51）。 如果电荷通过静电积累在电极层或屏蔽层中，则微小电流流过低电阻绝缘膜，减小了电极层与屏蔽层之间的电位差，因此可以防止绝缘层破裂 静电。

    Rare earth magnet
    3.
    发明授权
    Rare earth magnet 有权
    稀土磁铁

    公开(公告)号：US08303732B2

    公开(公告)日：2012-11-06

    申请号：US12696074

    申请日：2010-01-29

    申请人： Hiroyuki Suzuki ,  Takao Imagawa ,  Yuichi Satsu ,  Matahiro Komuro

    发明人： Hiroyuki Suzuki ,  Takao Imagawa ,  Yuichi Satsu ,  Matahiro Komuro

    IPC分类号： H01F1/057

    CPC分类号： C22C1/0441 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0293

    摘要： A rare earth magnet having a composition represented by RTB wherein R denotes a rare earth element, T a transition metal and B boron, the magnet being composed of magnet powder constituted by crystalline particles. The particles of the magnetic powder have a ratio of a short diameter being 10 μm or more to a long diameter is 0.5 or less. An element Rm having a magnetic anisotropy higher than that of the rare earth element is contained in the surface and inside of the magnet constituted by the magnet powder in an approximately constant concentration. An oxy-fluoride and carbon are present at boundaries of the particles of the magnet powder.

    摘要翻译： 具有由RTB表示的组成的稀土类磁体，其中R表示稀土元素，T是过渡金属和B硼，所述磁体由由结晶颗粒构成的磁体粉末组成。 磁粉的粒子的短径为10μm以上的长径比为0.5以下。 具有高于稀土元素的磁各向异性的元素Rm被包含在以大致恒定的浓度由磁体粉末构成的磁体的表面和内部。 氧氟化物和碳存在于磁体粉末颗粒的边界处。

    TREATING SOLUTION FOR FORMING FLUORIDE COATING FILM AND METHOD FOR FORMING FLUORIDE COATING FILM
    4.
    发明申请
    TREATING SOLUTION FOR FORMING FLUORIDE COATING FILM AND METHOD FOR FORMING FLUORIDE COATING FILM 审中-公开
    用于形成氟化物涂层膜的处理溶液和形成氟化物涂膜的方法

    公开(公告)号：US20120111232A1

    公开(公告)日：2012-05-10

    申请号：US13351350

    申请日：2012-01-17

    申请人： Matahiro Komuro ,  Yuichi Satsu ,  Yoshii Morishita ,  Shigeaki Funyu ,  Mitsuo Katayose

    发明人： Matahiro Komuro ,  Yuichi Satsu ,  Yoshii Morishita ,  Shigeaki Funyu ,  Mitsuo Katayose

    IPC分类号： C09D7/12

    CPC分类号： C23C22/02 ,  C23C18/00 ,  H01F1/0572 ,  H01F41/0293

    摘要： A conventional method for forming an insulating film on a magnet has a difficulty in achieving sufficient improvement in magnetic characteristics due to nonuniformity of a coating film, and an extended time and higher temperature which are required in a thermal treatment. In order to solve the problems, the present invention provides a treating solution composed of an alcohol based solvent and a rare earth fluoride or alkaline earth metal fluoride dispersing in the solvent. In the treating solution, at least one X-ray diffraction peak has a half-value width larger than 1°. The present invention also provides a method for forming an insulating film using the treating solution.

    摘要翻译： 在磁体上形成绝缘膜的常规方法难以实现由于涂膜的不均匀性而导致的磁特性的充分改善以及在热处理中所需的延长的时间和更高的温度。 为了解决上述问题，本发明提供了一种由醇系溶剂和分散在溶剂中的稀土氟化物或碱土金属氟化物构成的处理液。 在处理溶液中，至少一个X射线衍射峰的半值宽度大于1°。 本发明还提供了使用该处理溶液形成绝缘膜的方法。

    Rare-earth magnet
    5.
    发明授权
    Rare-earth magnet 失效
    稀土磁铁

    公开(公告)号：US08119260B2

    公开(公告)日：2012-02-21

    申请号：US11189912

    申请日：2005-07-27

    申请人： Matahiro Komuro ,  Yuichi Satsu ,  Kunihiro Maeda ,  Yuzo Kozono

    发明人： Matahiro Komuro ,  Yuichi Satsu ,  Kunihiro Maeda ,  Yuzo Kozono

    IPC分类号： B32B15/04

    CPC分类号： H02K1/02 ,  H01F1/0572 ,  H01F1/0577 ,  H01F41/0293 ,  Y10T428/32 ,  Y10T428/325

    摘要： In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.

    摘要翻译： 在含有至少一种稀土元素的铁磁材料中，在铁磁材料的晶界或粉末表面附近形成含有至少一种碱土金属或稀土元素和氟的层。 含有至少一种稀土元素的另一层，其氟浓度低于首先介绍的层，其稀土元素浓度高于铁磁材料的主相，或氧化物层 含有稀土元素的层与第一层的一部分相邻地形成。

    SINTERED MAGNET AND ROTATING ELECTRIC MACHINE USING SAME
    6.
    发明申请
    SINTERED MAGNET AND ROTATING ELECTRIC MACHINE USING SAME 审中-公开
    烧结磁铁和旋转电机使用相同

    公开(公告)号：US20120025651A1

    公开(公告)日：2012-02-02

    申请号：US13257331

    申请日：2010-02-18

    申请人： Matahiro Komuro ,  Yuichi Satsu ,  Hiroyuki Suzuki ,  Takao Imagawa

    发明人： Matahiro Komuro ,  Yuichi Satsu ,  Hiroyuki Suzuki ,  Takao Imagawa

    IPC分类号： H01F1/04 ,  H02K21/02

    CPC分类号： H01F1/0577 ,  C22C2202/02 ,  H01F1/0572 ,  H01F41/0266 ,  H01F41/0293

    摘要： A sintered magnet according to the present invention is a sintered magnet configured from a magnetic powder grain having Nd2Fe14B as a main component, in which: fluorine, a heavy rare earth element, oxygen, and carbon are segregated in part of grain-boundary regions of said sintered magnetic powder grain; concentration of the carbon is higher than concentration of the fluorine at a grain-boundary triple junction of the grain-boundary region; and concentration of the heavy rare earth element decreases from said grain-boundary triple junction toward an inside of said magnetic powder grain.

    摘要翻译： 根据本发明的烧结磁体是由以Nd2Fe14B为主要成分的磁性粉末颗粒构成的烧结磁体，其中，氟，重稀土元素，氧和碳在部分晶界区域分离 所述烧结磁粉颗粒; 碳的浓度高于晶界的晶界三重结的氟浓度; 并且所述重稀土元素的浓度从所述晶界三重结点向所述磁粉颗粒的内部减少。

    Rare-earth magnet and manufacturing method thereof and magnet motor
    9.
    发明授权
    Rare-earth magnet and manufacturing method thereof and magnet motor 有权
    稀土磁铁及其制造方法和磁铁

    公开(公告)号：US07871475B2

    公开(公告)日：2011-01-18

    申请号：US12534530

    申请日：2009-08-03

    申请人： Matahiro Komuro ,  Yuichi Satsu

    发明人： Matahiro Komuro ,  Yuichi Satsu

    IPC分类号： H01F1/057

    CPC分类号： H01F1/0572 ,  H01F41/0293 ,  Y10T428/2991

    摘要： The object of the present invention is to provide a rare earth magnet which enables to achieve a good balance between high coercive force and high residual magnetic flux density, and its manufacturing method. The present invention provides a rare earth magnet in which a layered grain boundary phase is formed on a surface or a potion of a grain boundary of Nd2Fe14B which is a main phase of an R—Fe—B (R is a rare-earth element) based magnet, and wherein the grain boundary phase contains a fluoride compound, and wherein a thickness of the fluoride compound is 10 μm or less, or a thickness of the fluoride compound is from 0.1 μm to 10 μm, and wherein the coverage of the fluoride compound over a main phase particle is 50% or more on average. Moreover, after layering fluoride compound powder, which is formed in plate-like shape, in the grain boundary phase, the rare earth magnet is manufactured by quenching the layered compound after melting it at a vacuum atmosphere at a predetermined temperature, or by heating and pressing the main phase and the fluoride compound to make the fluoride compound into a layered fluoride compound along the grain boundary phase.

    摘要翻译： 本发明的目的是提供一种能够在高矫顽力和高残留磁通密度之间实现良好平衡的稀土类磁铁及其制造方法。 本发明提供一种在作为R-Fe-B（R为稀土类元素）的主相的Nd2Fe14B的晶界的表面或部分形成层状晶界相的稀土类磁铁， 并且其中所述晶界相包含氟化物，并且其中所述氟化物的厚度为10μm以下，或所述氟化物的厚度为0.1μm〜10μm，并且其中所述氟化物的覆盖率 主相粒子上的化合物平均为50％以上。 此外，在晶界相中形成板状的氟化物复合粉末之后，通过在预定温度下在真空气氛下或通过加热熔化之后将层状化合物淬火来制造稀土磁铁， 按下主相和氟化物，使氟化合物沿着晶界相成为层状氟化物。