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    Thin-film magnetic head having a three-layer pole tip structure
    3.
    发明授权
    Thin-film magnetic head having a three-layer pole tip structure 失效
    具有三层极尖结构的薄膜磁头

    公开(公告)号：US06169642A

    公开(公告)日：2001-01-02

    申请号：US09150205

    申请日：1998-09-09

    申请人： Tetsuya Mino ,  Yasufumi Uno ,  Koji Matsukuma ,  Koichi Terunuma ,  Masahiro Kondo

    发明人： Tetsuya Mino ,  Yasufumi Uno ,  Koji Matsukuma ,  Koichi Terunuma ,  Masahiro Kondo

    IPC分类号： G11B5147

    CPC分类号： G11B5/3967 ,  G11B5/3156 ,  Y10T29/49046 ,  Y10T29/49048

    摘要： A thin-film magnetic head having an air bearing surface, includes a three-layer pole tip structure consisting of a lower pole tip element, a recording gap layer and an upper pole tip element, the structure having side surfaces, a rear surface and top surface, a lower auxiliary pole, a part of which contacts to the lower pole tip element, an upper auxiliary pole, a part of which contacts to the upper pole tip element, the upper auxiliary pole being magnetically connected at its rear portion with respect to the air bearing surface to the lower auxiliary pole so as to form a yoke together with the lower auxiliary pole, a lower insulating layer, surrounding the side surfaces and the rear surfaces of the three-layer pole tip structure, the lower insulating layer being located between the lower and upper auxiliary poles and having a top surface, a coil conductor formed on the top surface of the lower insulating layer, and an upper insulating layer covering the coil conductor, a part of the upper insulating layer being located between the lower insulating layer and the upper auxiliary pole. The top surface of the lower insulating layer is leveled lower than the top surface of the three-layer pole tip structure over at least a region within which the coil conductor is formed.

    摘要翻译： 具有空气轴承表面的薄膜磁头包括由下极端元件，记录间隙层和上极端元件组成的三层极尖端结构，该结构具有侧表面，后表面和顶部 表面，下辅助极，其一部分接触下极端元件，上辅助极，其一部分接触上极尖端元件，上辅助极在其后部相对于 空气支承面到下辅助极，以与下辅助极一起形成轭，下绝缘层围绕三层极尖结构的侧表面和后表面，下绝缘层位于 在上下辅助极之间并且具有顶表面，形成在下绝缘层的顶表面上的线圈导体和覆盖线圈导体的上绝缘层，u的一部分 绝缘层位于下绝缘层和上辅助极之间。 下绝缘层的顶表面在形成线圈导体的至少一个区域上比三层极尖端结构的顶表面平坦。

    Thin film magnetic head
    4.
    发明授权
    Thin film magnetic head 失效
    薄膜磁头

    公开(公告)号：US6151193A

    公开(公告)日：2000-11-21

    申请号：US58894

    申请日：1998-04-13

    申请人： Koichi Terunuma ,  Yasufumi Uno ,  Tetsuya Mino ,  Koji Matsukuma

    发明人： Koichi Terunuma ,  Yasufumi Uno ,  Tetsuya Mino ,  Koji Matsukuma

    IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/187

    CPC分类号： G11B5/3967 ,  G11B5/3109 ,  G11B5/3116 ,  G11B5/3146

    摘要： A first pole tip 212 at a write element 2 is provided projecting above a first yoke 211. A second pole tip 222 is adhered onto a gap film 23 that is adhered onto the first pole tip 212. The front end portion of a second yoke 221 is laminated on the second pole tip 222. At least either the first pole tip 212 or the second pole tip 222 is constituted of a material having a higher saturation magnetic flux density than that of permalloy. At least either the first yoke 211 or the second yoke 221 is constituted of a material having a higher resistivity than that of permalloy.

    摘要翻译： 写入元件2上的第一极端212设置在第一磁轭211的上方突出。第二极尖222粘附到粘附到第一极尖212上的间隙膜23上。第二磁轭221的前端部 层压在第二极端222上。第一极尖212或第二极尖222中的至少一个由具有比坡莫合金高的饱和磁通密度的材料构成。 第一磁轭211或第二磁轭221中的至少一个由比坡莫合金电阻率高的材料构成。

    Method of manufacturing thin-film magnetic head
    5.
    发明授权
    Method of manufacturing thin-film magnetic head 失效
    制造薄膜磁头的方法

    公开(公告)号：US06604275B1

    公开(公告)日：2003-08-12

    申请号：US09702865

    申请日：2000-11-01

    申请人： Tetsuya Mino ,  Yasufumi Uno ,  Koji Matsukuma ,  Koichi Terunuma ,  Masahiro Kondo

    发明人： Tetsuya Mino ,  Yasufumi Uno ,  Koji Matsukuma ,  Koichi Terunuma ,  Masahiro Kondo

    IPC分类号： G11B5127

    CPC分类号： G11B5/3967 ,  G11B5/3156 ,  Y10T29/49046 ,  Y10T29/49048

    摘要： A method of manufacturing a thin-film magnetic head, includes the steps of: forming, on a lower auxiliary pole, a three-layer pole tip structure consisting of a lower pole tip element, a recording gap layer and an upper pole tip element; depositing a lower insulating layer on the three-layer pole tip structure; polishing the lower insulating layer by chemical-mechanical polishing so that a top surface of the lower insulating layer is leveled lower than a top of the three-layer pole tip structure over at least a region within which a coil conductor is formed; forming the coil conductor on the lower insulating layer; forming an upper insulating to cover the coil conductor; and forming an upper auxiliary pole so that a part of which contacts to the upper pole tip element.

    摘要翻译： 一种制造薄膜磁头的方法，包括以下步骤：在下辅助极上形成由下极尖端元件，记录间隙层和上极尖端元件组成的三层极尖端结构; 在三层极尖结构上沉积下绝缘层; 通过化学机械抛光来研磨下绝缘层，使得下绝缘层的顶表面至少在形成线圈导体的区域之上平坦于三层极尖端结构的顶部; 在下绝缘层上形成线圈导体; 形成上绝缘体以覆盖线圈导体; 以及形成上部辅助极，使得其一部分接触上极尖端元件。

    Thin film magnetic head
    6.
    发明授权
    Thin film magnetic head 失效
    薄膜磁头

    公开(公告)号：US06188543B1

    公开(公告)日：2001-02-13

    申请号：US09063791

    申请日：1998-04-22

    申请人： Koichi Terunuma ,  Yasufumi Uno ,  Tetsuya Mino ,  Koji Matsukuma

    发明人： Koichi Terunuma ,  Yasufumi Uno ,  Tetsuya Mino ,  Koji Matsukuma

    IPC分类号： G11B531

    CPC分类号： G11B5/3967 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/3113

    摘要： A thin film magnetic head includes a recording gap layer, and lower and upper magnetic pole layers made of polycrystalline magnetic substances, deposited to sandwich the recording gap layer. An average particle size D of crystal substances at least in a region of the upper magnetic pole layer, near the recording gap layer with respect to a recording track width W is set to D≦W/20.

    摘要翻译： 薄膜磁头包括记录间隙层和由多晶磁性物质制成的下部和上部磁极层，沉积以夹持记录间隙层。 至少在上磁极层的记录间隙层的相对于记录磁迹宽度W附近的晶体物质的平均粒径D设定为D <= W / 20。

    Magnetic head, and its fabrication method
    7.
    发明授权
    Magnetic head, and its fabrication method 失效
    磁头及其制造方法

    公开(公告)号：US6023397A

    公开(公告)日：2000-02-08

    申请号：US932465

    申请日：1997-09-18

    申请人： Tetsuya Mino ,  Yasufumi Uno

    发明人： Tetsuya Mino ,  Yasufumi Uno

    IPC分类号： G11B5/31 ,  G11B5/39 ,  H01F10/14 ,  H01F41/22 ,  G11B5/235 ,  H01F10/00

    CPC分类号： G11B5/3903 ,  G11B5/3109 ,  G11B5/3967 ,  H01F10/147

    摘要： A magnetic pole or magnetic shielding film is constructed of a soft magnetic thin film that has a composition represented by formula (Fe.sub.1-x M.sub.x).sub.1-y N.sub.y wherein M is at least one element selected from the group consisting of magnesium, calcium, yttrium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, and boron, and an atomic ratio x is 0.01.ltoreq.x.ltoreq.0.1 and an atomic ratio y is 0.01.ltoreq.y.ltoreq.0.1. This soft magnetic thin film has a I(200)/I(110) ratio of 0.1 inclusive to 1 exclusive with the proviso that I(200), and I(110) represents an intensity of a diffraction peak for an iron (200) plane, and an iron (110) plane, respectively, as found from an X-ray diffraction pattern, and is substantially free from a diffraction peak for a nitride of the element M, as found from the X-ray diffraction pattern.

    摘要翻译： 磁极或磁屏蔽膜由具有由式（Fe1-xMx）1-yNy表示的组成的软磁性薄膜构成，其中M是选自镁，钙，钇，钛中的至少一种元素 锆，铪，钒，铌，钽，铬，钼，钨，锰和硼，原子比x为0.01≤x≤0.1，原子比y为0.01 < = 0.1。 该软磁性薄膜的I（200）/ I（110）比例为0.1（包括1）和1（I），条件是I（200），I（110）表示铁（200）的衍射峰的强度， 平面和铁（110）面，如X射线衍射图所示，基本上没有元素M的氮化物的衍射峰。

    Magnetic transducer and thin film magnetic head
    9.
    发明授权
    Magnetic transducer and thin film magnetic head 失效
    磁性传感器和薄膜磁头

    公开(公告)号：US5774309A

    公开(公告)日：1998-06-30

    申请号：US824135

    申请日：1997-03-25

    申请人： Yasufumi Uno ,  Kiyosumi Kanazawa ,  Masato Takahashi

    发明人： Yasufumi Uno ,  Kiyosumi Kanazawa ,  Masato Takahashi

    IPC分类号： G01R33/09 ,  G11B5/31 ,  G11B5/39 ,  H01F10/08 ,  H01L43/08

    CPC分类号： G11B5/399 ,  G11B5/3903 ,  G11B5/3932 ,  G11B5/3967 ,  G11B5/3116 ,  G11B5/313

    摘要： A central active area includes a MR film, a nonmagnetic spacer film and a soft magnetic film with the MR film constituting the lowermost layer on top of a supporting body, the nonmagnetic spacer film laminated on top of the MR film and the soft magnetic film laminated on top of the nonmagnetic spacer film to provide a lateral bias field to the MR film. A magnetic transducer and a thin film magnetic head with which the main peak width in the off track characteristics can be increased and, consequently, the margin can be increased are provided.

    摘要翻译： 中心活性区域包括MR膜，非磁性间隔膜和在支撑体顶部构成最下层的MR膜的软磁膜，层压在MR膜顶部的非磁性间隔膜和层压的软磁膜 在非磁性间隔膜的顶部，以向MR膜提供横向偏置场。 磁传感器和薄膜磁头可以提高偏离磁道特性中的主峰宽度，从而可以提高边缘。