公开(公告)号：US07846564B2

公开(公告)日：2010-12-07

申请号：US11235208

申请日：2005-09-27

Applicant: Shaoping Li ,  Kaizhong Gao ,  Lei Wang ,  Wenzhong Zhu ,  Xiaobin Wang

Inventor： Shaoping Li ,  Kaizhong Gao ,  Lei Wang ,  Wenzhong Zhu ,  Xiaobin Wang

IPC: G11B5/65

CPC classification number: G11B5/667 ,  B82Y10/00 ,  G11B5/64 ,  G11B5/65 ,  G11B5/656 ,  G11B5/66 ,  G11B5/743 ,  G11B5/746 ,  G11B5/82 ,  G11B2005/0029 ,  H01F41/0206 ,  Y10S428/90 ,  Y10T29/4902 ,  Y10T29/49032 ,  Y10T29/49067 ,  Y10T428/12458 ,  Y10T428/12465 ,  Y10T428/12931 ,  Y10T428/26 ,  Y10T428/265

Abstract: A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic anisotropy field Hk extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.

Abstract translation: 适用于高记录密度和高数据记录速率的垂直磁记录介质包括具有至少一个具有在其上形成层叠层的表面的非磁性基板，该层堆叠包括垂直记录层，该垂直记录层包含多个柱状磁性颗粒 垂直于衬底表面延伸一段长度，第一端远离表面，接近表面的第二端，其中每个磁性颗粒具有：（1）垂直磁各向异性场Hk沿其长度延伸的梯度 第一端和第二端; 和（2）沿着长度的预定局部交换耦合强度。

公开(公告)号：US20090161266A1

公开(公告)日：2009-06-25

申请号：US12321901

申请日：2009-01-27

Applicant: Hui-Chuan Wang ,  Tong Zhao ,  Min Li ,  Kunliang Zhang

Inventor： Hui-Chuan Wang ,  Tong Zhao ,  Min Li ,  Kunliang Zhang

IPC: G11B5/33 ,  G11B5/127

CPC classification number: H01L43/08 ,  B82Y40/00 ,  G11C11/161 ,  H01F10/3204 ,  H01F10/3254 ,  H01F10/3272 ,  H01F10/3281 ,  H01F10/3295 ,  H01F41/303 ,  H01L43/12 ,  Y10T29/49032 ,  Y10T29/49034 ,  Y10T29/49041 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/49067

Abstract: A high performance TMR element is fabricated by inserting an oxygen surfactant layer (OSL) between a pinned layer and AlOx tunnel barrier layer in a bottom spin valve configuration. The pinned layer preferably has a SyAP configuration with an outer pinned layer, a Ru coupling layer, and an inner pinned layer comprised of CoFeXBY/CoFeZ wherein x=0 to 70 atomic %, y=0 to 30 atomic %, and z=0 to 100 atomic %. The OSL is formed by treating the CoFeZ layer with oxygen plasma. The AlOx tunnel barrier has improved uniformity of about 2% across a 6 inch wafer and can be formed from an Al layer as thin as 5 Angstroms. As a result, the Hin value can be decreased by ⅓ to about 32 Oe. A dR/R of 25% and a RA of 3 ohm-cm2 have been achieved for TMR read head applications.

Abstract translation: 通过在底部自旋阀配置中的钉扎层和AlOx隧道势垒层之间插入氧表面活性剂层（OSL）来制造高性能TMR元件。 钉扎层优选具有带外部被钉扎层，Ru耦合层和由CoFeXBY / CoFeZ组成的内部钉扎层的SyAP构型，其中x = 0至70原子％，y = 0至30原子％，z = 0 至100原子％。 OSL通过用氧等离子体处理CoFeZ层而形成。 AlOx隧道势垒在6英寸晶片上提高了约2％的均匀性，并且可以由薄至5埃的Al层形成。 结果，Hin值可以减少1/3至约32Oe。 对于TMR读头应用，已经实现了25％的dR / R和3ohm-cm 2的RA。

公开(公告)号：US07493832B2

公开(公告)日：2009-02-24

申请号：US11781414

申请日：2007-07-23

Applicant: David W. Cripe

Inventor： David W. Cripe

IPC: G01L3/00

CPC classification number: G01L3/102 ,  G01L3/103 ,  Y10T29/49067

Abstract: A method of fabricating a magnetoelastic torque sensor includes plating a magnetoelastic material to a magnetically inert substrate, and its endowment with uniaxial magnetic anisotropy through the creation within the transducer element of stress anisotropy. The plating of magnetostrictive material to the magnetically inert substrate provides a less expensive torque element that exhibits desired levels of accuracy and reliability.

Abstract translation: 一种制造磁致弹性扭矩传感器的方法包括：通过在应力各向异性的换能器元件内产生，将磁弹性材料电镀到磁惰性基底上，并且其禀赋具有单轴磁各向异性。 将磁致伸缩材料电镀到磁性惰性衬底上提供了一种较便宜的扭矩元件，其显示出所需的准确度和可靠性。

公开(公告)号：US07441326B2

公开(公告)日：2008-10-28

申请号：US11505639

申请日：2006-08-17

Applicant: Yoshihiko Seyama ,  Atsushi Tanaka

Inventor： Yoshihiko Seyama ,  Atsushi Tanaka

IPC: G11B5/127 ,  H04R31/00

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/332 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49021 ,  Y10T29/49025 ,  Y10T29/49032 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/49067 ,  Y10T29/49075 ,  Y10T29/49078

Abstract: In a magnetic sensor, a lower terminal layer, a magnetosensitive layer, and a cover film are simultaneously patterned into substantially the same size. The opposing surface of the lower terminal layer, which opposes the magnetosensitive film is substantially superposed on one opposing surface of the magnetosensitive film. The opposing surface of the upper terminal layer, which opposes the magnetosensitive film is formed into a shape smaller than and included in the other opposing surface of the magnetosensitive film. This implements a magnetic sensor which uses a CPP structure and is yet readily processible and which includes a substantially accurate fine CPP structure in accordance with a desired output.

Abstract translation: 在磁传感器中，下端子层，磁敏层和覆盖膜同时被图案化成大致相同的尺寸。 与磁感光膜相对的下端子层的相对表面基本上重叠在磁敏感膜的一个相对的表面上。 与磁感应膜相对的上端子层的相对表面形成为小于并包括在磁敏感膜的另一相对表面中的形状。 这实现了使用CPP结构并且易于加工的磁传感器，并且其包括根据所需输出的基本精确的精细CPP结构。

公开(公告)号：US07360302B2

公开(公告)日：2008-04-22

申请号：US11497352

申请日：2006-08-02

Applicant: Hideki Sato ,  Kokichi Aiso ,  Yukio Wakui

Inventor： Hideki Sato ,  Kokichi Aiso ,  Yukio Wakui

IPC: G11B5/127 ,  H04R31/00

CPC classification number: G01R33/093 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/0005 ,  G01R33/09 ,  H01F10/3268 ,  H01F10/3295 ,  H01F41/304 ,  Y10T29/49034 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49052 ,  Y10T29/49067

Abstract: A magnetic sensor comprises magnetoresistive elements and permanent magnet films, which are combined together to form GMR elements formed on a quartz substrate having a square shape, wherein the permanent magnet films are paired and connected to both ends of the magnetoresistive elements, so that an X-axis magnetic sensor and a Y-axis magnetic sensor are realized by adequately arranging the GMR elements relative to the four sides of the quartz substrate. Herein, the magnetization direction of the pinned layer of the magnetoresistive element forms a prescribed angle of 45° relative to the longitudinal direction of the magnetoresistive element or relative to the magnetization direction of the permanent magnet film. Thus, it is possible to reliably suppress offset variations of bridge connections of the GMR elements even when an intense magnetic field is applied; and it is therefore possible to noticeably improve the resistant characteristics to an intense magnetic field.

Abstract translation: 磁传感器包括磁阻元件和永磁体膜，它们组合在一起以形成形成在具有正方形形状的石英衬底上的GMR元件，其中永磁体膜成对并连接到磁阻元件的两端，使得X 通过将GMR元件相对于石英基板的四个边进行适当配置来实现轴向磁传感器和Y轴磁传感器。 这里，磁阻元件的被钉扎层的磁化方向相对于磁阻元件的长度方向相对于永久磁铁膜的磁化方向形成45°的规定角度。 因此，即使施加强磁场，也可以可靠地抑制GMR元件的桥连接的偏移变化; 因此可以显着地提高对强磁场的电阻特性。

公开(公告)号：US07240418B2

公开(公告)日：2007-07-10

申请号：US11154636

申请日：2005-06-17

Applicant: Yoshitaka Sasaki ,  Hiroyuki Itoh ,  Takehiro Kamigama

Inventor： Yoshitaka Sasaki ,  Hiroyuki Itoh ,  Takehiro Kamigama

IPC: G11B5/127 ,  G11B5/60

CPC classification number: G11B5/6005 ,  Y10T29/49021 ,  Y10T29/49041 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/49067

Abstract: A slider includes a slider main body and a thin-film magnetic head element. The slider main body has an air bearing surface, an air inflow end, and an air outflow end. The air bearing surface has a first part closer to the air outflow end, a second part closer to the air inflow end, and a border part between the first part and the second part. The second part is slanted against the first part so that the entire air bearing surface has a convex shape bent at the border part.

Abstract translation: 滑块包括滑块主体和薄膜磁头元件。 滑动器主体具有空气轴承表面，空气流入端和空气流出端。 空气轴承表面具有靠近空气流出端的第一部分，更靠近空气流入端的第二部分和第一部分与第二部分之间的边界部分。 第二部分倾斜抵靠第一部分，使得整个空气轴承表面具有在边界部分弯曲的凸形。

公开(公告)号：US07199973B2

公开(公告)日：2007-04-03

申请号：US10672094

申请日：2003-09-26

Applicant: Jeffrey S. Lille

Inventor： Jeffrey S. Lille

IPC: G11B5/31 ,  G11B5/11

CPC classification number: G11B5/1278 ,  G11B5/112 ,  Y10T29/49032 ,  Y10T29/49039 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49067

Abstract: A head structure having a write head portion for writing data to magnetic media. The write head portion includes a first pole piece with a first pole tip, a probe pole piece having a probe pole tip for emitting magnetic flux from an ABS end thereof, an insulation stack positioned between the pole pieces, at least one write coil embedded in the insulation stack, a shaping layer positioned between the probe pole piece and the insulation stack for focusing flux to the probe pole tip, a trailing shield spaced apart from the pole, the trailing shield causing the magnetic flux to enter the media at an angle from a plane perpendicular to a surface of the media facing the pole, and a return pole piece.

Abstract translation: 一种头结构，具有用于向磁介质写入数据的写入头部分。 写头部分包括具有第一极尖的第一极片，具有用于从其ABS端发射磁通的探针极端的探针极片，位于极片之间的绝缘层，至少一个嵌入 绝缘堆叠，定位在探针极片和绝缘堆叠之间的成形层，用于将焊剂聚焦到探针极端，与极间隔开的后屏蔽，后屏蔽使磁通量以 垂直于面向磁极的介质表面的平面和返回极片。

公开(公告)号：US07170724B2

公开(公告)日：2007-01-30

申请号：US10686261

申请日：2003-10-16

Applicant: Hideki Sato ,  Kokichi Aiso ,  Yukio Wakui

Inventor： Hideki Sato ,  Kokichi Aiso ,  Yukio Wakui

IPC: G11B5/127

CPC classification number: G01R33/093 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/0005 ,  G01R33/09 ,  H01F10/3268 ,  H01F10/3295 ,  H01F41/304 ,  Y10T29/49034 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49052 ,  Y10T29/49067

Abstract: A magnetic sensor comprises magnetoresistive elements and permanent magnet films, which are combined together to form GMR elements formed on a quartz substrate having a square shape, wherein the permanent magnet films are paired and connected to both ends of the magnetoresistive elements, so that an X-axis magnetic sensor and a Y-axis magnetic sensor are realized by adequately arranging the GMR elements relative to the four sides of the quartz substrate. Herein, the magnetization direction of the pinned layer of the magnetoresistive element forms a prescribed angle of 45° relative to the longitudinal direction of the magnetoresistive element or relative to the magnetization direction of the permanent magnet film. Thus, it is possible to reliably suppress offset variations of bridge connections of the GMR elements even when an intense magnetic field is applied; and it is therefore possible to noticeably improve the resistant characteristics to an intense magnetic field.

Abstract translation: 磁传感器包括磁阻元件和永磁体膜，它们组合在一起以形成形成在具有正方形形状的石英衬底上的GMR元件，其中永磁体膜成对并连接到磁阻元件的两端，使得X 通过将GMR元件相对于石英基板的四个边进行适当配置来实现轴向磁传感器和Y轴磁传感器。 这里，磁阻元件的被钉扎层的磁化方向相对于磁阻元件的长度方向相对于永久磁铁膜的磁化方向形成45°的规定角度。 因此，即使施加强磁场，也可以可靠地抑制GMR元件的桥连接的偏移变化; 因此可以显着地提高对强磁场的电阻特性。

公开(公告)号：US07149062B2

公开(公告)日：2006-12-12

申请号：US10084845

申请日：2002-02-26

Applicant: Mustafa Pinarbasi ,  Patrick Rush Webb

Inventor： Mustafa Pinarbasi ,  Patrick Rush Webb

IPC: G11B5/33

CPC classification number: B82Y10/00 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3903 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49067

Abstract: A magnetic head having a spin valve sensor that is fabricated utilizing an Al2O3, NiMn0, Si seed layer upon which a PtMn spin valve sensor layer structure is subsequently fabricated. In the preferred embodiment, the Si layer has a thickness of approximately 20 Å and the PtMn layer has a thickness of approximately 120 Å. An alternative fabrication process of the Si layer includes the overdeposition of the layer to a first thickness of from 15 Å to 45 Å followed by the etching back of the seed layer of approximately 5 Å to approximately 15 Å to its desired final thickness of approximately 20 Å. The Si layer results in an improved crystal structure to the subsequently fabricated PtMn and other spin valve sensor layers, such that the fabricated spin valve is thinner and exhibits increased ΔR/R and reduced coercivity.

Abstract translation: 具有自旋阀传感器的磁头，其使用随后制造PtMn自旋阀传感器层结构的Al 2 O 3 N，NiMnO，Si种子层制造。 在优选实施例中，Si层的厚度约为20埃，PtMn层的厚度约为120埃。 Si层的替代制造工艺包括将该层过度沉积到第一厚度为从Å至Å至的第一厚度，接着将种子层的蚀刻回到大约5至大约15至所期望的最终厚度约为20 一个。 Si层导致随后制备的PtMn和其它自旋阀传感器层的改进的晶体结构，使得制造的自旋阀更薄并且表现出增加的DeltaR / R和降低的矫顽力。

公开(公告)号：US20060272146A1

公开(公告)日：2006-12-07

申请号：US11505639

申请日：2006-08-17

Applicant: Yoshihiko Seyama ,  Atsushi Tanaka

Inventor： Yoshihiko Seyama ,  Atsushi Tanaka

IPC: G11B5/33

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/332 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49021 ,  Y10T29/49025 ,  Y10T29/49032 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/49067 ,  Y10T29/49075 ,  Y10T29/49078

Abstract: In a magnetic sensor, a lower terminal layer, a magnetosensitive layer, and a cover film are simultaneously patterned into substantially the same size. The opposing surface of the lower terminal layer, which opposes the magnetosensitive film is substantially superposed on one opposing surface of the magnetosensitive film. The opposing surface of the upper terminal layer, which opposes the magnetosensitive film is formed into a shape smaller than and included in the other opposing surface of the magnetosensitive film. This implements a magnetic sensor which uses a CPP structure and is yet readily processible and which includes a substantially accurate fine CPP structure in accordance with a desired output.

Abstract translation: 在磁传感器中，下端子层，磁敏层和覆盖膜同时被图案化成大致相同的尺寸。 与磁感光膜相对的下端子层的相对表面基本上重叠在磁敏感膜的一个相对的表面上。 与磁感应膜相对的上端子层的相对表面形成为小于并包括在磁敏感膜的另一相对表面中的形状。 这实现了使用CPP结构并且易于加工的磁传感器，并且其包括根据所需输出的基本精确的精细CPP结构。