利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

11 条记录 (耗时 0.012 秒)

    Magnetoresistive read transducer
    1.
    发明公开
    Magnetoresistive read transducer 失效
    磁阻读传感器。

    公开(公告)号：EP0634740A3

    公开(公告)日：1996-01-31

    申请号：EP94304883.5

    申请日：1994-07-04

    申请人： International Business Machines Corporation

    发明人： Chen, Mao-Min ,  Fontana, Robert Edward ,  Krounbi, Mohamad Towfik ,  Kung, Kenneth Ting-Yuan ,  Lee, James Hsi-Tang ,  Lo, Jyh-Shliey Jerry ,  Tsang, Ching Hwa ,  Wang, Po-Kang

    IPC分类号： G11B5/39

    CPC分类号： G11B5/399

    摘要： An MR transducer (70) is disclosed having passive end regions (71) separated by a central active region (77) in which an MR layer (81) is formed over substantially only the central active region and in which a magnetic bias layer (75,79) is formed in each passive end region. In one embodiment, each of the magnetic bias layers includes a layer of ferromagnetic material (79) and a layer of antiferromagnetic material (75) overlaying and in contact with the ferromagnetic layer to provide an exchange-coupled magnetic bias field. Alternatively a hard magnetic material is used to form the biasing layer. Each of the magnetic bias layers form an abutting junction (87) having magnetic and electrical continuity with the MR layer to produce a stable longitudinal magnetic bias field in the transducer, even when the length of the active region is small to accommodate small track widths.

    Thin film magnetic head
    3.
    发明公开
    Thin film magnetic head 失效
    Dünnfilmmagnetkopf。

    公开(公告)号：EP0323704A2

    公开(公告)日：1989-07-12

    申请号：EP88311086.8

    申请日：1988-11-23

    申请人： International Business Machines Corporation

    发明人： Dickstein, Heidi Lee ,  Hiraoka, Hiroyuki ,  Lee, James Hsi-Tang

    IPC分类号： G11B5/31

    CPC分类号： G11B5/31

    摘要： The electrical insulation (22) surrounding the conductive coil (20) in a thin film magnetic head (11) comprises a photosensitive resin which has been crosslinked by a thermally activated crosslinking agent or promotor. The addition of the thermally activated crosslinking agent or promotor greatly reduces both the cure temperature and cure time and results in enhanced dimensional stability without any deleterious effects.

    摘要翻译： 在薄膜磁头（11）中围绕导电线圈（20）的电绝缘体（22）包括已经通过热活化的交联剂或促进剂交联的感光树脂。 添加热活化的交联剂或促进剂大大降低了固化温度和固化时间，并且导致增强的尺寸稳定性而没有任何有害影响。

    Magnetoresistive read transducer
    4.
    发明公开
    Magnetoresistive read transducer 失效
    磁阻器Lesewandler。

    公开(公告)号：EP0634740A2

    公开(公告)日：1995-01-18

    申请号：EP94304883.5

    申请日：1994-07-04

    申请人： International Business Machines Corporation

    发明人： Chen, Mao-Min ,  Fontana, Robert Edward ,  Krounbi, Mohamad Towfik ,  Kung, Kenneth Ting-Yuan ,  Lee, James Hsi-Tang ,  Lo, Jyh-Shliey Jerry ,  Tsang, Ching Hwa ,  Wang, Po-Kang

    IPC分类号： G11B5/39

    CPC分类号： G11B5/399

    摘要： An MR transducer (70) is disclosed having passive end regions (71) separated by a central active region (77) in which an MR layer (81) is formed over substantially only the central active region and in which a magnetic bias layer (75,79) is formed in each passive end region. In one embodiment, each of the magnetic bias layers includes a layer of ferromagnetic material (79) and a layer of antiferromagnetic material (75) overlaying and in contact with the ferromagnetic layer to provide an exchange-coupled magnetic bias field. Alternatively a hard magnetic material is used to form the biasing layer. Each of the magnetic bias layers form an abutting junction (87) having magnetic and electrical continuity with the MR layer to produce a stable longitudinal magnetic bias field in the transducer, even when the length of the active region is small to accommodate small track widths.

    摘要翻译： 公开了一种磁阻（MR）读取传感器，其具有被中心有源区域隔开的被动端区域，其中MR层仅在中心有源区域上形成，并且在每个被动端区域中形成磁偏置层。 在一个实施例中，每个磁偏置层包括铁磁材料层和与铁磁层重叠并接触的反铁磁材料层，以提供交换耦合磁偏置场。 或者，使用硬磁性材料来形成偏置层。 每个磁偏置层形成与MR层具有磁性和电连续性的邻接结，以便在换能器中产生稳定的纵向磁偏置场，即使当有源区的长度小以适应小轨道宽度时。

    Thin film magnetic head
    7.
    发明公开
    Thin film magnetic head 失效
    薄膜磁头

    公开(公告)号：EP0323704A3

    公开(公告)日：1991-01-16

    申请号：EP88311086.8

    申请日：1988-11-23

    申请人： International Business Machines Corporation

    发明人： Dickstein, Heidi Lee ,  Hiraoka, Hiroyuki ,  Lee, James Hsi-Tang

    IPC分类号： G11B5/31

    CPC分类号： G11B5/31

    摘要： The electrical insulation (22) surrounding the conductive coil (20) in a thin film magnetic head (11) comprises a photosensitive resin which has been crosslinked by a thermally activated crosslinking agent or promotor. The addition of the thermally activated crosslinking agent or promotor greatly reduces both the cure temperature and cure time and results in enhanced dimensional stability without any deleterious effects.

    摘要翻译： 围绕薄膜磁头（11）中的导电线圈（20）的电绝缘体（22）包括已经通过热活化的交联剂或促进剂交联的光敏树脂。 加入热活化的交联剂或促进剂极大地降低了固化温度和固化时间，并且导致尺寸稳定性增强而没有任何有害作用。

    Magnetoresistive read transducer
    10.
    发明公开
    Magnetoresistive read transducer 失效
    磁传感读取传感器

    公开(公告)号：EP0335488A3

    公开(公告)日：1991-09-11

    申请号：EP89301414.2

    申请日：1989-02-15

    申请人： International Business Machines Corporation

    发明人： Fontana, Robert Edward Jr. ,  Howard, James Kent ,  Lee, James Hsi-Tang ,  Lefakis, Haralambos

    IPC分类号： G11B5/39

    CPC分类号： G11B5/3903

    摘要： In a magnetoresistive (MR) read transducer comprising a thin MR film (10) formed of ferromagnetic material and a thin nonmagnetic spacer film layer (14) in contact with the MR film, the spacer film (14) comprises a material selected from the group consisting of nichrome and nichrome with chromium oxide. To make such a transducer, a thin soft magnetic material film is deposited in contact with the spacer film so that a transverse bias is produced in at least a part of the MR film. The resistivity of the spacer film can be chosen by selecting the ratio of nichrome to chromium oxide in the spacer film. In a specific embodiment (Fig. 2) the spacer film (24) extends over only the central region of the MR film (10). Where the MR film consists of a nickel based alloy, a wet chemical etching process using an etchant comprising an aqueous solution of ceric ammonium nitrate and acetic acid can be used to pattern the spacer film.