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    Magnetic thin film and magnetic head using the same
    1.
    发明申请
    Magnetic thin film and magnetic head using the same 审中-公开
    磁性薄膜和磁头使用相同

    公开(公告)号：US20050175864A1

    公开(公告)日：2005-08-11

    申请号：US11071309

    申请日：2005-03-04

    申请人： Shoji Ikeda ,  Takayuki Kubomiya ,  Masaaki Matsuoka ,  Ikuya Tagawa ,  Junichi Kane ,  Akifumi Chikazawa ,  Kazumasa Hosono

    发明人： Shoji Ikeda ,  Takayuki Kubomiya ,  Masaaki Matsuoka ,  Ikuya Tagawa ,  Junichi Kane ,  Akifumi Chikazawa ,  Kazumasa Hosono

    IPC分类号： G11B5/31 ,  G11B5/147

    CPC分类号： G11B5/3109 ,  G11B5/3103 ,  G11B5/3163

    摘要： The present invention relates to a magnetic thin film, which has high saturation magnetic flux density Bs of 2.2T or more, which is formed into a flat surface having surface roughness of 5 nm or less and which is capable of preferably being used for a write-head, and a magnetic head. The magnetic thin film includes a FeCo-based alloy layer stacked with a different layer so as to obtain the surface roughness of 5 nm or less. When forming the FeCo-based alloy layer, it is possible to flatten the film surface by performing reactive spattering using a reaction gas such as N2 for each of the layers forming the multi-layered thin film.

    摘要翻译： 本发明涉及具有2.2T以上的高饱和磁通密度Bs的磁性薄膜，其形成为具有5nm以下的表面粗糙度的平坦面，并且能够优选用于写入 头和磁头。 磁性薄膜包括层叠有不同层的FeCo系合金层，以获得5nm以下的表面粗糙度。 当形成FeCo基合金层时，可以通过对形成多层薄膜的各层使用诸如N 2的反应气体进行反应性溅射来使膜表面变平。

    Layered magnetic film and magnetic head
    2.
    发明申请
    Layered magnetic film and magnetic head 审中-公开
    分层磁膜和磁头

    公开(公告)号：US20070188917A1

    公开(公告)日：2007-08-16

    申请号：US11430034

    申请日：2006-05-08

    申请人： Junichi Kane ,  Yuji Uehara ,  Kenji Noma ,  Akifumi Chikazawa

    发明人： Junichi Kane ,  Yuji Uehara ,  Kenji Noma ,  Akifumi Chikazawa

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3146 ,  G11B5/147 ,  G11B5/3116

    摘要： The layered magnetic film has high saturation magnetic flux density and superior soft magnetic characteristics and can be used as a material of a write-head of a magnetic head capable of recording data with high recording density. The layered magnetic film comprises: at least one magnetic layer mainly made of iron (Fe) and cobalt (Co); and at least one NiFe layer, the magnetic layer and the NiFe layer are alternately layered, and the NiFe layer is a discontinuous film.

    摘要翻译： 分层磁性膜具有高的饱和磁通密度和优异的软磁特性，并且可以用作能够记录具有高记录密度的数据的磁头的写入头的材料。 层状磁性膜包括：主要由铁（Fe）和钴（Co）制成的至少一个磁性层; 并且至少一个NiFe层，磁性层和NiFe层交替层叠，并且NiFe层是不连续的膜。

    Soft magnetic film and thin film magnetic head
    3.
    发明申请
    Soft magnetic film and thin film magnetic head 审中-公开
    软磁膜和薄膜磁头

    公开(公告)号：US20060209458A1

    公开(公告)日：2006-09-21

    申请号：US11158257

    申请日：2005-06-21

    申请人： Junichi Kane ,  Yuji Uehara ,  Kenji Noma ,  Akifumi Chikazawa

    发明人： Junichi Kane ,  Yuji Uehara ,  Kenji Noma ,  Akifumi Chikazawa

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3116 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3146 ,  H01F10/14 ,  H01F10/16 ,  H01F10/265

    摘要： The soft magnetic film has superior soft magnetic characteristics and is suitable for a thin film magnetic head. The soft magnetic film of the present invention comprises: a magnetic base layer including a ferromagnetic element; and a ferromagnetic layer being piled on the magnetic base layer. The soft magnetic film has uniaxial magnetic anisotropy. The magnetic base layer includes at least one element selected from Fe, Ni and Co as the ferromagnetic element.

    摘要翻译： 软磁膜具有优良的软磁特性，适用于薄膜磁头。 本发明的软磁性膜包括：包含铁磁性元件的磁性基层; 并且铁磁层堆叠在磁性基底层上。 软磁膜具有单轴磁各向异性。 磁性基层包括选自Fe，Ni和Co中的至少一种元素作为铁磁性元素。

    Horizontal type magneto-resistive head using flux guide
    5.
    发明授权
    Horizontal type magneto-resistive head using flux guide 失效
    水平型磁阻头使用磁通导向

    公开(公告)号：US5777827A

    公开(公告)日：1998-07-07

    申请号：US709270

    申请日：1996-09-06

    申请人： Yoshifumi Mizoshita ,  Takao Koshikawa ,  Hitoshi Kanai ,  Junichi Kane ,  Yoshinori Otsuka ,  Yukinori Ikegawa

    发明人： Yoshifumi Mizoshita ,  Takao Koshikawa ,  Hitoshi Kanai ,  Junichi Kane ,  Yoshinori Otsuka ,  Yukinori Ikegawa

    IPC分类号： G11B5/02 ,  G11B5/31 ,  G11B5/39 ,  G11B19/04 ,  G11B5/33

    CPC分类号： G11B5/3916 ,  G11B19/04 ,  G11B5/02 ,  G11B5/3183 ,  G11B5/3903 ,  G11B5/3925 ,  G11B5/3967

    摘要： A magneto-resistive (MR) head has an MR layer in a space formed by shield layers by providing a distance enough to protect magnetic flux, flowing through the MR layer from a recording medium through a gap formed by the shield layers, from leaking out to the shield layers. A flux guide is provided between the MR layer and the gap, and has an end magnetically connected to the MR, extending over an effective area of the MR head, and another end having a width a little narrower than a width of track of the recording medium. A side of the MR layer, opposite to the side connected with the flux guide layer is placed in a narrow space formed at a corner of the space. Magnetic flux leaked from the gap due to a sense current flowing through the MR layer is eliminated by making a current flow through a recording coil layer or through an electrically conductive layer placed in the space.

    摘要翻译： 磁阻（MR）头在由屏蔽层形成的空间中具有MR层，通过提供足够的距离来保护磁通量，通过由屏蔽层形成的间隙从记录介质流过MR层，从而泄漏 到屏蔽层。 磁通引导件设置在MR层和间隙之间，并且具有磁性地连接到MR的端部，延伸在MR磁头的有效区域上，另一端的宽度比记录的轨道的宽度稍窄 中。 MR层的与与磁通引导层连接的一侧相对的一侧被放置在形成在该空间的角部的狭窄空间中。 通过使流过记录线圈层的电流或通过放置在该空间中的导电层而消除由于流过MR层的感测电流而从间隙泄漏的磁通。

    MAGNETIC HEAD AND MAGNETIC DISK UNIT
    6.
    发明申请
    MAGNETIC HEAD AND MAGNETIC DISK UNIT 审中-公开
    磁头和磁盘单元

    公开(公告)号：US20090290265A1

    公开(公告)日：2009-11-26

    申请号：US12335014

    申请日：2008-12-15

    申请人： Junichi Kane

    发明人： Junichi Kane

    IPC分类号： G11B5/33

    CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3912 ,  G11B2005/3996

    摘要： The magnetic head having shielding layers is capable of preventing fluctuation of output caused by magnetic domain structures of the shielding layers, stabilizing the output, restraining variation of products and improving production yield. The magnetic head comprises: shielding layers for magnetically shielding a magnetoresistance effect reproducing element; hard films being located on the both sides of the magnetoresistance effect reproducing element as seen from a facing surface which faces a recording medium; and soft magnetic layers being composed of a soft magnetic material, the soft magnetic layers being located on the both sides of the shielding layers as seen from the facing surface.

    摘要翻译： 具有屏蔽层的磁头能够防止由屏蔽层的磁畴结构引起的输出波动，稳定输出，抑制产品变化和提高产量。 磁头包括：用于磁屏蔽磁阻效应再现元件的屏蔽层; 硬磁膜位于磁阻效应再生元件的两侧，从面向记录介质的面对面看， 软磁性层由软磁性材料构成，所述软磁性层位于所述屏蔽层的两侧，从所述面对面看。

    Magnetoresistive transducer including CoFeZ soft magnetic layer
    7.
    发明授权
    Magnetoresistive transducer including CoFeZ soft magnetic layer 失效
    磁阻换能器包括CoFeZ软磁层

    公开(公告)号：US6154349A

    公开(公告)日：2000-11-28

    申请号：US783464

    申请日：1997-01-16

    申请人： Hitoshi Kanai ,  Junichi Kane ,  Ken'ichiro Yamada

    发明人： Hitoshi Kanai ,  Junichi Kane ,  Ken'ichiro Yamada

    IPC分类号： G01R33/09 ,  G11B5/39 ,  H01F10/08 ,  H01F10/32 ,  H01L43/08

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B5/3967 ,  H01F10/3268 ,  G11B2005/3996

    摘要： A magnetoresistive transducer includes a multilayer provided with a first soft magnetic layer, a conductive nonmagnetic layer, a second soft magnetic layer, and a biasing magnetic layer giving a magnetization of a predetermined direction to the second soft magnetic layer, in that order of superposition. The first soft magnetic layer is a multilayer superposed structure including a (Co.sub.y Fe.sub.100-y).sub.100-x Z.sub.x alloy layer where Z represents boron and x and y represent atomic fractions (at %), and an alloy layer containing at least Ni and Fe. The (Co.sub.y Fe.sub.100-y).sub.100-x Z.sub.x alloy layer ofthe first soft magnetic layer borders on the nonmagnetic layer and has a face-centered cubic lattice structure with a d spacing smaller than a d spacing of a Co.sub.y Fe.sub.100-y alloy. A pair of electrodes are formed on the multilayer for allowing a sense current to pass through the multilayer.

    摘要翻译： 磁阻换能器包括按照叠加次序设置有第一软磁层，导电非磁性层，第二软磁层和给予第二软磁层预定方向的磁化的偏置磁性层的多层。 第一软磁层是包括（CoyFe100-y）100-xZx合金层，其中Z表示硼，x和y表示原子级分（at％））的多层重叠结构，以及至少含有Ni和Fe的合金层。 第一软磁层的（CoyFe100-y）100-xZx合金层与非磁性层相邻，并且具有d间距小于CoyFe100-y合金的d间距的面心立方晶格结构。 在多层上形成一对电极，以使感测电流通过多层。

    Magnetoresistive head and magnetic recording apparatus
    9.
    发明授权
    Magnetoresistive head and magnetic recording apparatus 失效
    磁阻磁头和磁记录装置

    公开(公告)号：US5898546A

    公开(公告)日：1999-04-27

    申请号：US503006

    申请日：1995-07-17

    申请人： Hitoshi Kanai ,  Yoshifumi Mizoshita ,  Junichi Kane ,  Kenichi Aoshima

    发明人： Hitoshi Kanai ,  Yoshifumi Mizoshita ,  Junichi Kane ,  Kenichi Aoshima

    IPC分类号： G11B5/00 ,  G11B5/39

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/3903 ,  G11B2005/3996 ,  G11B5/3925 ,  G11B5/3967

    摘要： The present invention relates to a magnetoresistive head capable of converting a change in a magnetic field generated by a magnetic recording medium into a change in electric resistivity by utilizing spin valve magnetoresistance effect to read signal information. The magnetoresistive head comprises a first magnetic layer, a second magnetic layer formed on the first magnetic layer through a first nonmagnetic metal layer and magnetized in one direction, a third magnetic layer formed on the second magnetic layer through a second nonmagnetic metal layer, and an electric current supplying layer for applying a constant current to at least the third magnetic layer, the second nonmagnetic metal layer and the second magnetic layer in one of the same direction as and the opposite direction to the direction of magnetization of the second magnetic layer.

    摘要翻译： 本发明涉及一种能够通过利用自旋阀磁电阻效应将磁记录介质产生的磁场变化转换为电阻率变化的磁阻头。 磁阻头包括第一磁性层，通过第一非磁性金属层形成在第一磁性层上并沿一个方向磁化的第二磁性层，通过第二非磁性金属层形成在第二磁性层上的第三磁性层，以及 电流供给层，用于向与第二磁性层的磁化方向相同的方向和与第二磁性层的磁化方向相反的方向中的至少第三磁性层，第二非磁性金属层和第二磁性层施加恒定电流。