Tunneling barrier material for a magnetic recording head
    1.
    发明授权
    Tunneling barrier material for a magnetic recording head 有权
    用于磁记录头的隧道阻隔材料

    公开(公告)号:US06791806B1

    公开(公告)日:2004-09-14

    申请号:US10216515

    申请日:2002-08-09

    IPC分类号: G11B539

    摘要: A tunneling magnetoresistive stack configured to operate in a current-perpendicular-to-plane mode has a plurality of layers including a barrier layer. The TMR stack has a plurality of layers including a barrier layer, wherein the barrier layer is comprised of an insulating material selected from a group consisting of HfO, HfAlO, ZrO, TiO, TaO or NdO. The TMR stack exhibits a low resistance-area (RA) product, a stable magnetoresistive (MR) ratio, a lower RA product, a higher breakdown voltage of the TMR stack and enhanced thermal stability.

    摘要翻译: 构造成在电流垂直于平面模式下工作的隧道磁阻堆叠具有包括阻挡层的多个层。 TMR叠层具有包括阻挡层的多个层,其中阻挡层由选自HfO,HfAlO,ZrO,TiO,TaO或NdO的绝缘材料构成。 TMR堆叠表现出低电阻面积(RA)产品,稳定的磁阻(MR)比,较低的RA乘积,TMR堆叠的较高击穿电压和增强的热稳定性。

    Spin valve sensors with an oxide layer utilizing electron specular scattering effect
    2.
    发明授权
    Spin valve sensors with an oxide layer utilizing electron specular scattering effect 有权
    具有利用电子镜面散射效应的氧化层的旋转阀传感器

    公开(公告)号:US06556390B1

    公开(公告)日:2003-04-29

    申请号:US09558253

    申请日:2000-04-25

    IPC分类号: G11B539

    摘要: The present invention comprises a magnetoresistive sensor including a cap layer, a free layer, a spacer layer, a pinned layer, an oxide layer, a pinning layer, a seed layer, and a substrate layer. The sensor consists of the cap layer adjacent the free layer. The free layer is adjacent to the spacer layer. The spacer layer is adjacent to the pinned layer. The pinned layer is adjacent to the oxide layer. The oxide layer is adjacent to the pinning layer. The pinning layer is adjacent to the seed layer and the seed layer is adjacent to the substrate. The present invention also comprises a method of manufacturing the magnetoresistive sensor including forming a layered structure. An electron specular scattering effect occurs at the oxide interface to achieve enhanced GMR responses while maintaining thermostability.

    摘要翻译: 本发明包括磁阻传感器,其包括盖层,自由层,间隔层,钉扎层,氧化物层,钉扎层,籽晶层和基底层。 传感器由邻近自由层的盖层组成。 自由层与间隔层相邻。 间隔层与被钉扎层相邻。 钉扎层与氧化物层相邻。 氧化物层与钉扎层相邻。 钉扎层与种子层相邻,种子层与基底相邻。 本发明还包括一种制造磁阻传感器的方法,包括形成分层结构。 在氧化物界面处发生电子镜面散射效应,以实现增强的GMR响应,同时保持热稳定性。

    Method of fabricating a spin valve/GMR sensor having a synthetic antiferromagnetic layer pinned by Mn-alloy
    4.
    发明授权
    Method of fabricating a spin valve/GMR sensor having a synthetic antiferromagnetic layer pinned by Mn-alloy 有权
    制造具有由Mn合金固定的合成反铁磁层的自旋阀/ GMR传感器的方法

    公开(公告)号:US06548114B2

    公开(公告)日:2003-04-15

    申请号:US09907219

    申请日:2001-07-17

    IPC分类号: C23C1606

    摘要: A method of fabricating a spin valve sensor includes sequentially depositing, without breaking vacuum, a seed layer and an antiferromagnetic layer. Sequentially depositing the seed layer and the antiferromagnetic layer includes depositing a seed layer on a substrate; depositing a Mn-alloy layer of the antiferromagnetic layer directly on top of the seed layer; and depositing a buffer layer of the antiferromagnetic layer directly on top of the Mn-alloy layer. The seed layer, the Mn-alloy layer and the buffer layer are annealed. After annealing, a portion of the buffer layer is etched and a synthetic antiferromagnetic layer is deposited on top of the buffer layer. A spacer layer is deposited on top of the synthetic antiferromagnetic layer, and a free layer is deposited on top of the spacer layer.

    摘要翻译: 制造自旋阀传感器的方法包括在不破坏真空的情况下依次沉积种子层和反铁磁性层。 顺序地沉积种子层和反铁磁性层包括将种子层沉积在基底上; 将反铁磁层的Mn合金层直接沉积在种子层的顶部; 并将反铁磁层的缓冲层直接沉积在Mn合金层的顶部上。 种子层,Mn合金层和缓冲层退火。 在退火之后,缓冲层的一部分被蚀刻,并且合成的反铁磁层沉积在缓冲层的顶部上。 间隔层沉积在合成反铁磁性层的顶部上,并且自由层沉积在间隔层的顶部上。

    Giant magnetoresistive sensor with a CrMnPt pinning layer and a NiFeCr seed layer
    7.
    发明授权
    Giant magnetoresistive sensor with a CrMnPt pinning layer and a NiFeCr seed layer 有权
    具有CrMnPt钉扎层和NiFeCr种子层的巨磁阻传感器

    公开(公告)号:US06498707B1

    公开(公告)日:2002-12-24

    申请号:US09367952

    申请日:1999-08-25

    IPC分类号: G11B539

    摘要: A giant magnetoresistive stack (10) for use in a magnetic read head includes a NiFeCr seed layer (12), a ferromagnetic free layer (14), a nonmagnetic spacer layer (16), a ferromagnetic pinned layer (18), and a CrMnPt pinning layer (20). The ferromagnetic free layer (14) has a rotatable magnetic moment and is positioned adjacent to the NiFeCr seed layer (12). The ferromagnetic pinned layer (18) has a fixed magnetic moment and is positioned adjacent to the CrMnPt pinning layer (20). The nonmagnetic spacer layer (16) is positioned between the free layer (14) and the pinned layer (18). The combination of layers with their respective atomic percentage compositions and thicknesses results in a GMR ratio of at least 12%.

    摘要翻译: 用于磁读头的巨磁阻堆叠(10)包括NiFeCr晶种层(12),铁磁自由层(14),非磁性间隔层(16),铁磁性钉扎层(18)和CrMnPt 钉扎层(20)。 铁磁自由层(14)具有可旋转的磁矩并且被定位成与NiFeCr晶种层(12)相邻。 铁磁钉扎层(18)具有固定的磁矩并且邻近CrMnPt钉扎层(20)定位。 非磁性间隔层(16)位于自由层(14)和被钉扎层(18)之间。 层与其各自的原子百分比组成和厚度的组合导致GMR比至少为12%。

    Spin valve head with exchange bias stabilized free layer
    8.
    发明授权
    Spin valve head with exchange bias stabilized free layer 有权
    旋转阀头与交换偏置稳定自由层

    公开(公告)号:US06556392B1

    公开(公告)日:2003-04-29

    申请号:US09689042

    申请日:2000-10-12

    IPC分类号: G11B539

    摘要: A spin valve head according to the present invention includes a spin valve stack having a free layer, a first spacer layer, a pinned layer and a pinning layer. The spin valve head includes a first shield and a second shield coupled to opposing sides of the spin valve stack. The first shield has a concave shape and substantially surrounds the free layer. The spin valve head also includes a second spacer layer and a layer of antiferromagnetic material. The second spacer layer is formed on the free layer. The layer of antiferromagnetic material is formed on the second spacer layer.

    摘要翻译: 根据本发明的自旋阀头包括具有自由层,第一间隔层,钉扎层和钉扎层的自旋阀叠层。 自旋阀头包括第一屏蔽和耦合到自旋阀叠层的相对侧的第二屏蔽。 第一屏蔽件具有凹形并且基本上围绕自由层。 自旋阀头还包括第二间隔层和反铁磁材料层。 第二间隔层形成在自由层上。 反铁磁材料层形成在第二间隔层上。

    Giant magnetoresistive sensor with pinning layer
    9.
    发明授权
    Giant magnetoresistive sensor with pinning layer 失效
    具有钉扎层的巨磁阻传感器

    公开(公告)号:US06433972B1

    公开(公告)日:2002-08-13

    申请号:US09380435

    申请日:1999-09-01

    IPC分类号: G11B539

    摘要: A giant magnetoresistive stack (10) for use in a magnetic read head includes a NiFeCr seed layer (12), a ferromagnetic free layer (14), a nonmagnetic spacer layer (16), a ferromagnetic pinned layer (18), and a PtMnX pinning layer (20), where X is either Cr or Pd. The ferromagnetic free layer (14) has a rotatable magnetic moment and is positioned adjacent to the NiFeCr seed layer (12). The ferromagnetic pinned layer (18) has a fixed magnetic moment and is positioned adjacent to the PtMnX pinning layer (20). The nonmagnetic spacer layer (16) is positioned between the free layer (14) and the pinned layer (18).

    摘要翻译: 用于磁读头的巨磁电阻堆(10)包括NiFeCr晶种层(12),铁磁自由层(14),非磁性间隔层(16),铁磁固定层(18)和PtMnX 钉扎层(20),其中X是Cr或Pd。 铁磁自由层(14)具有可旋转的磁矩并且被定位成与NiFeCr晶种层(12)相邻。 铁磁钉扎层(18)具有固定的磁矩并且邻近PtMnX钉扎层(20)定位。 非磁性间隔层(16)位于自由层(14)和被钉扎层(18)之间。