Differential CPP reader for perpendicular magnetic recording
    1.
    发明授权
    Differential CPP reader for perpendicular magnetic recording 有权
    用于垂直磁记录的差分CPP读码器

    公开(公告)号:US07016160B2

    公开(公告)日:2006-03-21

    申请号:US10715695

    申请日:2003-11-18

    IPC分类号: G11B5/127

    摘要: A differential read head comprises one tri-layer reader or a plurality of tri-layer readers operating in a current perpendicular to plane (CPP) mode. The tri-layer readers each comprise a first free layer, a second free layer, and a nonmagnetic layer positioned therebetween. A nonmagnetic spacer is positioned between the plurality of tri-layer readers for electrically connecting the plurality of tri-layer readers in series such that a single CPP sense current representing a differential signal flows serially through the read head. With a single tri-layer reader, the free layers are spaced by a width substantially similar to the transition width of the magnetic medium.

    摘要翻译: 差分读取头包括在垂直于平面(CPP)模式的电流中操作的一个三层读取器或多个三层读取器。 三层读取器各自包括位于其间的第一自由层,第二自由层和非磁性层。 非磁性间隔件位于多个三层读取器之间,用于串联电连接多个三层读取器,使得表示差分信号的单个CPP感测电流串行地流过读取头。 使用单个三层读取器,自由层间隔开与磁介质的过渡宽度基本相似的宽度。

    PATTERNED MEDIA WITH SPACINGS ADJUSTED BY A SKEW FUNCTION
    2.
    发明申请
    PATTERNED MEDIA WITH SPACINGS ADJUSTED BY A SKEW FUNCTION 有权
    具有由功能调整的空间的图形媒体

    公开(公告)号:US20090097152A1

    公开(公告)日:2009-04-16

    申请号:US11870858

    申请日:2007-10-11

    IPC分类号: G11B5/00

    CPC分类号: G11B5/82 G11B5/855

    摘要: Recording media comprises multiple first and second patterned media islands sequentially placed at different first and second radii along a length of a recording track. A recording head sequentially accesses the first and second islands as the head moves along a length of the recording track. Circumferential spacings between sequential first and second islands along the length of the track vary as a skew function of a track radius.

    摘要翻译: 记录介质包括沿着记录轨道的长度依次放置在不同的第一和第二半径处的多个第一和第二图案化介质岛。 当磁头沿记录磁道的长度移动时,记录头依次访问第一和第二岛。 沿着轨道长度的顺序第一和第二岛之间的周长间隔作为轨道半径的偏斜函数而变化。

    Patterned media with spacings adjusted by a skew function
    4.
    发明授权
    Patterned media with spacings adjusted by a skew function 有权
    具有由偏斜函数调整的间距的图案化介质

    公开(公告)号:US07864470B2

    公开(公告)日:2011-01-04

    申请号:US11870858

    申请日:2007-10-11

    IPC分类号: G11B5/09

    CPC分类号: G11B5/82 G11B5/855

    摘要: Recording media comprises multiple first and second patterned media islands sequentially placed at different first and second radii along a length of a recording track. A recording head sequentially accesses the first and second islands as the head moves along a length of the recording track. Circumferential spacings between sequential first and second islands along the length of the track vary as a skew function of a track radius.

    摘要翻译: 记录介质包括沿着记录轨道的长度依次放置在不同的第一和第二半径处的多个第一和第二图案化介质岛。 当磁头沿记录磁道的长度移动时,记录头依次访问第一和第二岛。 沿着轨道长度的顺序第一和第二岛之间的周长间隔作为轨道半径的偏斜函数而变化。

    V-shape magnetic field sensor with anisotropy induced orthogonal magnetic alignment
    5.
    发明授权
    V-shape magnetic field sensor with anisotropy induced orthogonal magnetic alignment 有权
    具有各向异性诱导正交磁对准的V型磁场传感器

    公开(公告)号:US07271986B2

    公开(公告)日:2007-09-18

    申请号:US10304663

    申请日:2002-11-26

    IPC分类号: G11B5/39

    摘要: A magnetoresistive sensor having two free layers with shape anisotropy induced magnetic alignment is disclosed. The magnetoresistive sensor includes a first ferromagnetic free layer having a first quiescent state magnetization direction. The magnetoresistive sensor also includes a second elongated free layer having a second quiescent state magnetization direction and positioned such that the first quiescent state magnetization direction is generally orthogonal to the second quiescent state magnetization direction. Further, a portion of the second ferromagnetic free layer overlaps a portion of the first ferromagnetic free layer proximal to an air bearing surface to form a v-shape. A nonmagnetic spacer layer is also positioned between the first ferromagnetic free layer and the second ferromagnetic free layer.

    摘要翻译: 公开了具有形状各向异性诱导磁对准的两个自由层的磁阻传感器。 磁阻传感器包括具有第一静态磁化方向的第一铁磁自由层。 磁阻传感器还包括具有第二静态磁化方向的第二细长自由层,并且定位成使得第一静态状态磁化方向大致垂直于第二静态状态磁化方向。 此外,第二铁磁自由层的一部分与靠近空气支承表面的第一铁磁自由层的一部分重叠以形成v形。 非磁性间隔层也位于第一铁磁自由层和第二铁磁自由层之间。

    Giant magnetoresistive sensor with high-resistivity magnetic layers
    6.
    发明授权
    Giant magnetoresistive sensor with high-resistivity magnetic layers 有权
    具有高电阻掺杂底层和掺杂钉扎层的巨磁阻传感器

    公开(公告)号:US06809909B2

    公开(公告)日:2004-10-26

    申请号:US10060519

    申请日:2002-01-30

    IPC分类号: G11B5127

    摘要: A giant magnetoresistive stack for use in a magnetic read head has a plurality of layers including at least one ferromagnetic layer which contributes to a giant magnetoresistive signal, a doped ferromagnetic pinned layer and a doped ferromagnetic underlayer which do not contribute to a giant magnetoresistive signal. The dopant in the doped ferromagnetic pinned layer and underlayer reduces parasitic shunting current through the giant magnetoresistive stack by providing an increase in resistivity without a decrease in magnetization.

    摘要翻译: 用于磁读头的巨磁阻堆叠具有多个层,其包括至少一个有助于巨磁阻信号的铁磁层,掺杂的铁磁性被钉扎层和掺杂的铁磁性底层,其对巨磁阻信号无贡献。 掺杂的铁磁性钉扎层和底层中的掺杂剂通过在不降低磁化强度的情况下提供电阻率而减小通过巨磁阻堆叠的寄生分流电流。