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    Magnetic film and thin film magnetic head using this magnetic film
    2.
    发明授权
    Magnetic film and thin film magnetic head using this magnetic film 有权
    使用这种磁性膜的磁性膜和薄膜磁头

    公开(公告)号：US07288333B2

    公开(公告)日：2007-10-30

    申请号：US10659119

    申请日：2003-09-10

    申请人： Mitsuo Kawasaki ,  Hisayuki Yazawa ,  Yoshihiro Kanada

    发明人： Mitsuo Kawasaki ,  Hisayuki Yazawa ,  Yoshihiro Kanada

    IPC分类号： G11B5/31 ,  G11B5/127

    CPC分类号： C25D3/562 ,  C25D5/18 ,  C25D7/001 ,  G11B5/3109 ,  G11B5/3113 ,  G11B5/313 ,  G11B5/3163 ,  H01F10/16 ,  Y10T428/115 ,  Y10T428/1186 ,  Y10T428/1193 ,  Y10T428/32 ,  Y10T428/325

    摘要： A soft magnetic film of the present invention is a plated film composed of Co and Fe, and columnar crystals extending in the film thickness direction are provided. In the present invention, columnar crystals extending in the film thickness direction are provided so that an improvement in the surface roughness of the film surface and an improvement in the corrosion resistance can be achieved. Furthermore, the saturation magnetic flux density Bs can also be improved by making the crystal fine and eliminating the need for addition of the noble metal element. That is, according to a CoFe alloy of the present invention, both the corrosion resistance and the saturation magnetic flux density Bs can be improved, and specifically, the above-mentioned saturation magnetic flux density Bs can be increased to 2.35 T or more.

    摘要翻译： 本发明的软磁性膜是由Co和Fe组成的镀膜，并且设置在膜厚度方向上延伸的柱状晶体。 在本发明中，提供了沿膜厚方向延伸的柱状晶体，从而可以实现膜表面的粗糙度的提高和耐腐蚀性的提高。 此外，通过使晶体细化并且不需要添加贵金属元素，也可以提高饱和磁通密度Bs。 也就是说，根据本发明的CoFe合金，可以提高耐腐蚀性和饱和磁通密度Bs，特别是上述饱和磁通密度Bs可以提高到2.35T以上。

    THIN FILM MAGNETIC HEAD AND METHOD OF MANUFACTURING THE SAME
    3.
    发明申请
    THIN FILM MAGNETIC HEAD AND METHOD OF MANUFACTURING THE SAME 审中-公开
    薄膜磁头及其制造方法

    公开(公告)号：US20080266720A1

    公开(公告)日：2008-10-30

    申请号：US11872201

    申请日：2007-10-15

    申请人： Hisayuki Yazawa ,  Mitsuo Kawasaki

    发明人： Hisayuki Yazawa ,  Mitsuo Kawasaki

    IPC分类号： G11B5/33

    CPC分类号： G11B5/3163 ,  G11B5/1278

    摘要： A thin film magnetic head is disclosed having a non-magnetic layer that is formed of a NiPRe (nickel-phosphorus-rhenium) alloy, which makes it possible to optimize the composition ratios of elements Ni, P, and Re, to obtain the non-magnetic layer having a smooth surface, and to prevent concave portions from being formed in both side surfaces of the non-magnetic layer during a milling process, thereby improving recording characteristics.The composition ratio of a NiPRe alloy forming the non-magnetic layer is set within the range surrounded by boundary lines A to D in a ternary diagram, which makes it possible to form a non-magnetic layer having a smooth surface and uniformly form the magnetic layer on the non-magnetic layer. In addition, since the NiPRe alloy having the composition ratio has a low milling rate, it is possible to prevent concave portions from being formed in both side surfaces of the magnetic layer that is formed on or underneath the non-magnetic layer. As a result, it is possible to accurately regulate a recording track width to a narrow width and thus improve recording characteristics.

    摘要翻译： 公开了一种薄膜磁头，其具有由NiPRe（镍 - 铼 - 铼）合金形成的非磁性层，这使得可以优化元素Ni，P和Re的组成比，以获得非磁性层， - 具有光滑表面的磁性层，并且在研磨过程中防止在非磁性层的两个侧表面中形成凹部，从而改善记录特性。 形成非磁性层的NiPRe合金的组成比设定在由边界线A至D包围的范围内，这使得可以形成具有光滑表面并均匀形成磁性的非磁性层 层在非磁性层上。 此外，由于具有组成比的NiPRe合金具有低的研磨速度，因此可以防止在形成在非磁性层上或下面的磁性层的两个侧表面中形成凹部。 结果，可以将记录磁道宽度精确地调节到窄的宽度，从而提高记录特性。

    Corrosion-resistant soft magnetic film, method of producing the same, thin film magnetic head using the same and method of manufacturing the thin film magnetic head
    5.
    发明授权
    Corrosion-resistant soft magnetic film, method of producing the same, thin film magnetic head using the same and method of manufacturing the thin film magnetic head 有权
    耐腐蚀软磁性膜，其制造方法，使用其的薄膜磁头及其制造方法

    公开(公告)号：US06898054B2

    公开(公告)日：2005-05-24

    申请号：US09867825

    申请日：2001-05-30

    申请人： Mitsuo Kawasaki ,  Yoshihiro Kanada

    发明人： Mitsuo Kawasaki ,  Yoshihiro Kanada

    IPC分类号： C22C38/00 ,  G11B5/31 ,  H01F10/14 ,  H01F41/24 ,  G11B5/147

    CPC分类号： H01F10/14 ,  G11B5/3109

    摘要： A lower pole layer and/or an upper pole layer is formed by plating a soft magnetic film represented by the formula FeXNiYαZ (wherein element α is at least one of Tc, Ru, Rh, Pd, Re, Os, Ir and Pt), wherein the composition ratio X of Fe is 65% by mass to 74% by mass, the composition ratio Y of Ni 25% by mass to 34% by mass, the composition ratio Z of the element α is 1% by mass to 7% by mass, and X+Y+Z=100% by mass. Therefore, a thin film magnetic head adaptable to a higher recording density and having excellent corrosion resistance can be manufactured.

    摘要翻译： 通过电镀由下式表示的软磁性膜形成下极层和/或上电极层： （其中元素α为Tc，Ru，Rh，Pd，Re，Os，Ir和Pt中的至少一种），其中Fe的组成比X为65质量％至74质量％，Ni的组成比Y 25质量％至34质量％，元素α的组成比Z为1质量％至7质量％，X + Y + Z = 100质量％。 因此，可以制造适应于更高记录密度并具有优异耐腐蚀性的薄膜磁头。