Magnetic shields for reduced variations of head-media spacing
    1.
    发明授权
    Magnetic shields for reduced variations of head-media spacing 有权
    磁屏蔽,用于减小头部 - 介质间距的变化

    公开(公告)号:US07031122B2

    公开(公告)日:2006-04-18

    申请号:US10206739

    申请日:2002-07-26

    IPC分类号: G11B5/39 G11B5/255

    摘要: The invention offers a magnetic recording head that includes a substrate, a read sensor, and at least one shield positioned adjacent to the read sensor, wherein the shield contributes to thermal pole-tip recession in an amount less than about 0.5 Å/° C. The invention also offers a magnetic recording head that includes a substrate having a coefficient of thermal expansion, a read sensor, and at least one shield, positioned adjacent to the read sensor, that has a coefficient of thermal expansion within ±2×10−6/° C. of the coefficient of thermal expansion of the substrate. The invention further offers a magnetic recording head that includes a substrate, a read sensor, and at least one shield, positioned adjacent the read sensor, with a thickness of from about 0.05 μm to about 0.5 μm.

    摘要翻译: 本发明提供了一种磁记录头,其包括基板,读取传感器和邻近读取传感器定位的至少一个屏蔽件,其中该屏蔽件以小于约/℃/℃的量有助于热极尖端退缩。 本发明还提供了一种磁记录头,其包括具有热膨胀系数的基板,读取传感器和邻近读取传感器定位的至少一个屏蔽件,其具有在±2×10 -6以内的热膨胀系数, 6℃/℃的基板的热膨胀系数。 本发明还提供了一种磁记录头,其包括基片,读取传感器以及与读取传感器相邻定位的至少一个屏蔽件,厚度为约0.05μm至约0.5μm。

    Transducing head having improved studs and bond pads to reduce thermal deformation
    2.
    发明授权
    Transducing head having improved studs and bond pads to reduce thermal deformation 有权
    转头具有改进的螺柱和接合垫以减少热变形

    公开(公告)号:US06813118B2

    公开(公告)日:2004-11-02

    申请号:US10277878

    申请日:2002-10-22

    IPC分类号: G11B560

    CPC分类号: G11B5/6005

    摘要: A transducing head formed upon a slider has a transducer, an electrical contact layer, a stud electrically connected to the contact layer, and a bond pad electrically connected to the stud. The electrical contact layer is electrically connected to the transducer. The stud is formed of a material having a coefficient of thermal expansion less than about 1.3 times a coefficient of thermal expansion of a slider material forming the slider. The bond pad has a metallic underlayer and a top layer. The metallic underlayer is formed of a material having a coefficient of thermal expansion less than about 1.1 times the coefficient of thermal expansion of the slider material.

    摘要翻译: 形成在滑块上的换能头具有换能器,电接触层,电连接到接触层的螺柱和电连接到螺柱的接合垫。 电接触层电连接到换能器。 螺柱由热膨胀系数小于形成滑块的滑块材料的热膨胀系数的约1.3倍的材料形成。 接合垫具有金属底层和顶层。 金属底层由热膨胀系数小于滑块材料的热膨胀系数的约1.1倍的材料形成。

    Shared pole design for reduced thermal pole tip protrusion
    4.
    发明授权
    Shared pole design for reduced thermal pole tip protrusion 失效
    共享极设计用于减少热极尖突起

    公开(公告)号:US06754050B2

    公开(公告)日:2004-06-22

    申请号:US10322888

    申请日:2002-12-18

    IPC分类号: G11B539

    摘要: A data transducer having an air bearing surface is used to reduce thermal pole tip protrusion. The data transducer includes a write via and a top pole having one end adjacent the air bearing surface and an opposite end contacting the write via. The yoke extends from the write via in two directions towards the air bearing surface and is recessed from the air bearing surface. The yoke has a first end and a second end. The data transducer includes a shared pole adjacent the air bearing surface and co-planar to the yoke wherein a gap is located between the shared pole and the yoke. A shared pole extension extends between the shared pole and the first and second ends of the yoke.

    摘要翻译: 具有空气轴承表面的数据传感器用于减少热极尖端突起。 数据传感器包括写通孔和顶极,其一端与空气支承表面相邻,相反端接触写通孔。 轭从写入通道沿两个方向朝向空气支承表面延伸并且从空气轴承表面凹陷。 轭具有第一端和第二端。 数据传感器包括邻近空气支承表面并与轭共面的共享极,其中间隙位于共享极和轭之间。 共享极延伸部在共轭极与轭的第一和第二端之间延伸。

    Bilayer shared pole extension for reduced thermal pole tip protrusion
    5.
    发明授权
    Bilayer shared pole extension for reduced thermal pole tip protrusion 失效
    双层共享极扩展,减少热极尖突起

    公开(公告)号:US06876526B2

    公开(公告)日:2005-04-05

    申请号:US10241431

    申请日:2002-09-11

    摘要: A transducing head formed upon a slider has an air bearing surface, a top magnetic pole, a shared magnetic pole, a write via, and a shared pole extension. The write via is positioned opposite the air bearing surface and extends between the top magnetic pole and the shared magnetic pole. The shared pole extension is positioned adjacent the air bearing surface and extends from the shared magnetic pole toward the top magnetic pole. The shared pole extension is separated from the top magnetic pole by a write gap. The shared pole extension is formed of a multilayer having a layer of a first material having a high magnetic moment and a layer a second material having a coefficient of thermal expansion substantially similar to a coefficient of thermal expansion of the slider material.

    摘要翻译: 形成在滑块上的换能头具有空气轴承表面,顶部磁极,共享磁极,写通孔和共用极延伸部。 写通孔与空气轴承表面相对定位并在顶部磁极和共享磁极之间延伸。 共用极延伸部位于空气支承面附近,从共享磁极向顶部磁极延伸。 共享极扩展通过写入间隙与顶部磁极分离。 共享极延伸部由多层构成,具有具有高磁矩的第一材料层和具有基本上类似于滑块材料的热膨胀系数的热膨胀系数的第二材料层。

    READER SHIELD/ELECTRODE STRUCTURE FOR IMRPOVED STRAY FIELD AND ELECTRICAL PERFORMANCE
    7.
    发明申请
    READER SHIELD/ELECTRODE STRUCTURE FOR IMRPOVED STRAY FIELD AND ELECTRICAL PERFORMANCE 有权
    读写器屏蔽/电极结构用于IMRPOVED STRAY场和电气性能

    公开(公告)号:US20080186637A1

    公开(公告)日:2008-08-07

    申请号:US12100919

    申请日:2008-04-10

    IPC分类号: G11B5/33

    摘要: A magnetic sensing device includes a first electrode, a second electrode, a first magnetic shield, a second magnetic shield, and a sensor. The first magnetic shield forms at least a portion of the first electrode. The second magnetic shield includes a first region that forms at least a portion of the first electrode and a second region that forms at least a portion of the second electrode. The sensor is positioned between the first and second magnetic shields and is electrically connected in series between the first and second electrodes.

    摘要翻译: 磁感测装置包括第一电极,第二电极,第一磁屏蔽,第二磁屏蔽和传感器。 第一磁屏蔽形成第一电极的至少一部分。 第二磁屏蔽包括形成第一电极的至少一部分的第一区域和形成第二电极的至少一部分的第二区域。 传感器位于第一和第二磁屏蔽之间并串联电连接在第一和第二电极之间。

    Perpendicular writer with laminated main pole
    10.
    发明授权
    Perpendicular writer with laminated main pole 失效
    具有主极延伸层的垂直写入器和不同时刻的反铁磁耦合层

    公开(公告)号:US06791796B2

    公开(公告)日:2004-09-14

    申请号:US10259133

    申请日:2002-09-27

    IPC分类号: G11B531

    摘要: The present invention is a perpendicular writer having an air-bearing surface, a main pole with an extension, and return pole, and a back gap closure intermediate the main pole extension and the return pole. The main pole includes a top magnetic layer and a soft magnetic underlayer separated by a nonmagnetic spacer. The main pole extension is in direct contact with the main pole and recessed from the air-bearing surface. The top magnetic layer forms a trailing edge of the main pole at the ABS and has a magnetic moment greater than that of the soft magnetic underlayer. Further, the top magnetic layer and the soft magnetic underlayer are antiferromagnetically coupled through the thin nonmagnetic spacer. The nonmagnetic spacer has predominantly 111-crystalline texture and promotes reduction of coercivity and grain size along with an increase of anistropy of the top magnetic layer material.

    摘要翻译: 本发明是一种具有空气轴承表面的垂直刻录机,具有延伸部分的主极和返回极,以及在主极延伸部和返回极之间的后间隙。 主极包括由非磁性间隔物分离的顶部磁性层和软磁性底层。 主极延伸部分与主极直接接触并从空气轴承表面凹陷。 顶部磁性层在ABS处形成主极的后缘,其磁矩大于软磁性底层的磁矩。 此外,顶部磁性层和软磁性底层通过薄的非磁性间隔物反铁磁耦合。 非磁性间隔物主要具有111晶体结构,并且随着顶部磁性层材料的电阻率的增加,促进了矫顽力和晶粒尺寸的降低。