利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

78 条记录 (耗时 0.027 秒)

    Magnetic field sensor provided with an upper shield layer having portions with different magnetostriction
    2.
    发明授权
    Magnetic field sensor provided with an upper shield layer having portions with different magnetostriction 失效
    磁场传感器设置有具有不同磁致伸缩部分的上屏蔽层

    公开(公告)号：US07558027B2

    公开(公告)日：2009-07-07

    申请号：US11411107

    申请日：2006-04-26

    申请人： Kei Hirata ,  Takahiko Machita ,  Koji Shimazawa ,  Kiyoshi Noguchi

    发明人： Kei Hirata ,  Takahiko Machita ,  Koji Shimazawa ,  Kiyoshi Noguchi

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3912 ,  B82Y10/00 ,  G11B5/3909 ,  G11B5/3929 ,  G11B2005/3996

    摘要： A magnetic field sensor comprises: a magnetic field detecting element that detects magnitude of an external magnetic field based on electric resistance of the magnetic field detecting element to sense current, the electric resistance being varied in accordance with the external magnetic field; an upper shield layer that is formed to cover the magnetic field detecting element; and a protective layer that is formed above the upper shield layer with respect to a direction of stacking. The upper shield layer includes a first portion at least part of which covers a top surface of the magnetic field detecting element, and a second portion that covers the first portion, and, the first portion has a larger absolute value of magnetostriction than the second portion.

    摘要翻译： 磁场传感器包括：磁场检测元件，其基于磁场检测元件的电阻来检测外部磁场的大小以感测电流，电阻根据外部磁场而变化; 形成为覆盖所述磁场检测元件的上屏蔽层; 以及相对于堆叠方向形成在上屏蔽层上方的保护层。 上屏蔽层包括其至少一部分覆盖磁场检测元件的顶表面的第一部分和覆盖第一部分的第二部分，并且第一部分具有比第二部分更大的磁致伸缩绝对值 。

    Magnetic head for perpendicular magnetic recording with controlled state of magnetization of the end face of the pole layer
    4.
    发明授权
    Magnetic head for perpendicular magnetic recording with controlled state of magnetization of the end face of the pole layer 有权
    用于垂直磁记录的磁头，具有磁极层端面的受控磁化状态

    公开(公告)号：US07679861B2

    公开(公告)日：2010-03-16

    申请号：US11591504

    申请日：2006-11-02

    申请人： Kei Hirata ,  Kiyoshi Noguchi

    发明人： Kei Hirata ,  Kiyoshi Noguchi

    IPC分类号： G11B5/31

    CPC分类号： G11B5/3116 ,  G11B5/1278

    摘要： A pole layer incorporates a track width defining portion and a wide portion. The track width defining portion has an end face that is located in the medium facing surface and that defines the track width. The maximum width of the wide portion is greater than the track width and equal to or greater than the length of the wide portion taken in the direction orthogonal to the medium facing surface. When the coil is generating no magnetic field, in the end face of the track width defining portion, there exist first and second regions in which the directions of components of magnetization orthogonal to the medium facing surface are opposite.

    摘要翻译： 极层包括轨道宽度限定部分和宽部分。 轨道宽度限定部分具有位于介质面向表面中并限定轨道宽度的端面。 宽部分的最大宽度大于轨道宽度，并且等于或大于在与面向介质的表面正交的方向上拍摄的宽部分的长度。 当线圈不产生磁场时，在轨道宽度限定部分的端面中，存在第一和第二区域，其中与面向介质的表面正交的磁化分量的方向相反。

    THIN-FILM MAGNETIC HEAD, HEAD GIMBAL ASSEMBLY, AND HARD DISK SYSTEM
    6.
    发明申请
    THIN-FILM MAGNETIC HEAD, HEAD GIMBAL ASSEMBLY, AND HARD DISK SYSTEM 有权
    薄膜磁头，头盖组件和硬盘系统

    公开(公告)号：US20070279803A1

    公开(公告)日：2007-12-06

    申请号：US11756134

    申请日：2007-05-31

    申请人： Kei Hirata ,  Tetsuya Roppongi ,  Kiyoshi Noguchi

    发明人： Kei Hirata ,  Tetsuya Roppongi ,  Kiyoshi Noguchi

    IPC分类号： G11B5/147

    CPC分类号： G11B5/1278 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/743

    摘要： The invention provides a thin-film magnetic head wherein the combined release angle Φ for a dominant recording magnetic field generated from a magnetic pole layer toward a patterned media for the purpose of recording magnetic information is set to within an angle range of 35° to 65° with respect to a patterned media surface. It is thus possible to invert, with efficiency and reliability, the directions of magnetization of isolate bits lined up on the patterned media for high-density recording.

    摘要翻译： 本发明提供了一种薄膜磁头，其中用于记录磁信息的从磁极层向图案化介质产生的主要记录磁场的组合释放角Phi设定在35°至65°的角度范围内 °相对于图案化介质表面。 因此，可以以效率和可靠性反转排列在图案化介质上的高密度记录的隔离位的磁化方向。

    Perpendicular magnetic recording element, thin film magnetic head, magnetic head device, and magnetic recording/reproducing apparatus
    7.
    发明申请
    Perpendicular magnetic recording element, thin film magnetic head, magnetic head device, and magnetic recording/reproducing apparatus 有权
    垂直磁记录元件，薄膜磁头，磁头装置和磁记录/重放装置

    公开(公告)号：US20060203379A1

    公开(公告)日：2006-09-14

    申请号：US11337659

    申请日：2006-01-24

    申请人： Kei Hirata ,  Takahiko Machita ,  Kiyoshi Noguchi

    发明人： Kei Hirata ,  Takahiko Machita ,  Kiyoshi Noguchi

    IPC分类号： G11B5/127

    CPC分类号： G11B5/1278

    摘要： A perpendicular magnetic recording element includes a recording magnetic pole film and a write shield film. The recording magnetic pole film has a yoke portion and a main magnetic pole for perpendicular recording. The main magnetic pole projects from a front end of the yoke portion to have an end on a medium-facing surface. The write shield film faces the recording magnetic pole film and has a height equal to or smaller than that of the recording magnetic pole film, as measured rearward from the medium-facing surface.

    摘要翻译： 垂直磁记录元件包括记录磁极膜和写保护膜。 记录磁极膜具有用于垂直记录的磁轭部分和主磁极。 主磁极从磁轭部的前端突出，以在中间面的表面上具有一端。 写入屏蔽膜面向记录磁极膜，并且具有与记录磁极膜相同或更小的高度，从中间面向后测量。

    Soft magnetic film and method of manufacturing same, thin-film magnetic head and method of manufacturing same, head arm assembly and magnetic disk drive
    8.
    发明授权
    Soft magnetic film and method of manufacturing same, thin-film magnetic head and method of manufacturing same, head arm assembly and magnetic disk drive 有权
    软磁膜及其制造方法，薄膜磁头及其制造方法，头臂组件和磁盘驱动器

    公开(公告)号：US07684151B2

    公开(公告)日：2010-03-23

    申请号：US11647493

    申请日：2006-12-29

    申请人： Atsushi Yamaguchi ,  Kiyoshi Noguchi ,  Kei Hirata

    发明人： Atsushi Yamaguchi ,  Kiyoshi Noguchi ,  Kei Hirata

    IPC分类号： G11B5/31

    CPC分类号： G11B5/3113 ,  G11B5/3163

    摘要： A pole layer of a magnetic head incorporates a soft magnetic film made of an iron-cobalt-nickel-base alloy. When the total of the iron, cobalt and nickel contents of the soft magnetic film is assumed as 100 weight percent, the iron content of the soft magnetic film is within a range of 42 to 90 weight percent inclusive, the cobalt content thereof is within a range of 0 to 48 weight percent inclusive, and the nickel content thereof is within a range of 10 to 20 weight percent inclusive. The soft magnetic film has a crystal structure that is a mixed crystal of a body-centered cubic structure phase and a face-centered cubic structure phase. The soft magnetic film is manufactured by performing electroplating using a plating current whose direction is alternately switched.

    摘要翻译： 磁头的极层包含由铁 - 钴 - 镍基合金制成的软磁膜。 当软磁性膜的铁，钴和镍含量的总和为100重量％时，软磁性膜的铁含量在42〜90重量％的范围内，其钴含量在 范围为0〜48重量％，其含量在10〜20重量％的范围内。 软磁性膜具有作为体心立方结构相和面心立方结构相的混晶的晶体结构。 通过使用交替切换方向的电镀电流进行电镀来制造软磁性膜。

    Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive
    9.
    发明授权
    Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive 有权
    用于垂直磁记录的磁头，磁头万向架组件，磁头臂组件和磁盘驱动器

    公开(公告)号：US07463449B2

    公开(公告)日：2008-12-09

    申请号：US11266289

    申请日：2005-11-04

    申请人： Kei Hirata ,  Atsushi Yamaguchi ,  Tetsuya Roppongi ,  Kiyoshi Noguchi

    发明人： Kei Hirata ,  Atsushi Yamaguchi ,  Tetsuya Roppongi ,  Kiyoshi Noguchi

    IPC分类号： G11B5/31 ,  G11B5/127

    CPC分类号： G11B5/1278 ,  G11B5/3113 ,  G11B5/3116

    摘要： A pole layer incorporate a track width defining and a wide portion. A material forming the pole layer is an alloy whose major elements are iron and nickel. In the alloy, where the proportions of iron and nickel with respect to the total of iron and nickel are indicated as (100−M) weight % and M weight %, respectively, M is greater than 0 and smaller than or equal to 10. The internal stress of the pole layer is a tensile stress. The magnetostriction constant of the material forming the pole layer is positive. Where the anisotropy field of the pole layer is Hk (A/m), the magnetostriction constant of the material forming the pole layer is λ(×10−6), and the internal stress of the pole layer is σ (MPa), the value of Hk/(λ×σ) is greater than 0.01 and smaller than 0.2.

    摘要翻译： 极层包含限定的轨道宽度和宽的部分。 形成极层的材料是其主要元素是铁和镍的合金。 在合金中，铁和镍相对于铁和镍总量的比例分别表示为（100-M）重量％和M重量％，M大于0且小于或等于10。 极层的内应力是拉伸应力。 形成极层的材料的磁致伸缩常数为正。 在极层的各向异性场为Hk（A / m）的情况下，形成极层的材料的磁致伸缩常数为λ（x10-6），极层的内应力为σ（MPa） 的Hk /（lambdaxsigma）大于0.01且小于0.2。