公开(公告)号：US09355655B1

公开(公告)日：2016-05-31

申请号：US14818263

申请日：2015-08-04

Applicant: HGST Netherlands B.V.

Inventor： Yuta Udo ,  Mikito Sugiyama ,  Katsuro Watanabe ,  Masashi Hattori ,  Nobuo Yoshida ,  Kimitoshi Etoh

IPC: G11B5/127 ,  G11B5/31

CPC classification number: G11B5/1278 ,  G11B5/235 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/3146 ,  G11B2005/0024

Abstract: In one embodiment, a magnetic recording head includes: a main pole configured to generate a magnetic field for recording data on a magnetic recording medium; an oscillation device positioned above the main pole in a track direction, the oscillation device being configured to generate a high-frequency magnetic field; a magnetic capping layer positioned above the oscillation device in the track direction, the magnetic layer having a front region at a media facing side (MFS) of the magnetic recording head and a rear region positioned behind the front region in an element height direction, wherein a thickness of the front region of the magnetic capping layer is less than a thickness of the rear region thereof; and a trailing shield positioned above the magnetic capping layer in the track direction.

Abstract translation: 在一个实施例中，磁记录头包括：主极，被配置为产生用于在磁记录介质上记录数据的磁场; 振荡装置，其被配置为产生高频磁场;振荡装置，其被配置为产生高频磁场;振荡装置， 位于振动装置上方的轨道方向的磁性覆盖层，所述磁性层具有位于所述磁记录头的介质相对侧（MFS）的前部区域和位于元件高度方向上的所述前部区域后方的后部区域，其中， 磁性覆盖层的前部区域的厚度小于其后部区域的厚度; 以及沿磁道方向定位在磁性覆盖层上方的后屏蔽。

公开(公告)号：US09336802B2

公开(公告)日：2016-05-10

申请号：US14743145

申请日：2015-06-18

Applicant: HGST Netherlands B.V.

Inventor： Hideki Mashima ,  Nobuo Yoshida ,  Iwata Norihiro ,  Tsutomu Yasuda

IPC: G11B5/39 ,  G11B5/31

CPC classification number: G11B5/3929 ,  G11B5/3163 ,  G11B5/3912 ,  G11B5/3948 ,  G11B5/3951 ,  G11B5/3954 ,  G11B5/3977 ,  G11B5/398

Abstract: The embodiments disclosed generally relate to a magnetic recording head having three magnetoresistive effect elements. The structure comprises a first magnetoresistive effect element on a lower magnetic shield layer. Additionally, two lower electrodes are disposed on the two sides of the first magnetoresistive effect element. A second magnetoresistive effect element is disposed on a lower electrode while a third magnetoresistive effect element on another lower electrode. An upper magnetic shield layer is disposed between the second magnetoresistive effect element and the third magnetoresistive effect element. The upper magnetic shield also serves as an electrode of the first magnetoresistive effect element.

公开(公告)号：US20150138668A1

公开(公告)日：2015-05-21

申请号：US14596121

申请日：2015-01-13

Applicant: HGST Netherlands B.V.

Inventor： Hideki Mashima ,  Nobuo Yoshida ,  Masashi Hattori ,  Tutomu Yasuda

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3948

Abstract: In one embodiment, a magnetic head includes at least one magnetoresistive (MR) element positioned at a media-facing surface of the magnetic head, a lower portion of the at least one MR element extending in an element height direction away from the media-facing surface of the magnetic head farther than an upper portion of the at least one MR element, at least one back wiring layer positioned behind the upper portion of the at least one MR element in the element height direction and above the lower portion of the at least one MR element, the at least one back wiring layer being configured to electrically communicate with the at least one MR element, and an upper wiring layer positioned above the at least one MR element at the media-facing surface of the magnetic head and extending in the element height direction away from the media-facing surface of the magnetic head.

Abstract translation: 在一个实施例中，磁头包括位于磁头的面向媒体的表面上的至少一个磁阻（MR）元件，所述至少一个MR元件的下部沿元件高度方向延伸远离介质面 所述磁头的表面比所述至少一个MR元件的上部更远，至少一个后布线层位于所述元件高度方向上的所述至少一个MR元件的所述上部的后面，并且至少在所述至少一个MR元件的下部 一个MR元件，所述至少一个背面布线层被配置为与所述至少一个MR元件电连通;以及上布线层，位于所述至少一个MR元件上方，位于所述磁头的面向介质的表面处，并且延伸到 元件高度方向远离磁头的面向媒体的表面。

公开(公告)号：US20160217813A1

公开(公告)日：2016-07-28

申请号：US14604617

申请日：2015-01-23

Applicant: HGST NETHERLANDS B.V.

Inventor： Hideki Mashima ,  Kenichi Meguro ,  Nobuo Yoshida ,  Toyoshige Noridomi ,  Tomohiro Saito ,  Kaori Suzuki

IPC: G11B5/39 ,  G11B5/127

CPC classification number: G11B5/3912 ,  G11B5/3932 ,  G11B5/3948 ,  G11B5/3958 ,  G11B5/397

Abstract: In one embodiment, a magnetic head includes a lower magnetic shield layer positioned at a media-facing surface, a pinned layer positioned above the lower magnetic shield layer at the media-facing surface, at least two MR elements extending in an element height direction by a first length positioned above the pinned layer and separated in a cross-track direction by an inner layer, bias layers extending in the element height direction by a second length positioned on outside edges of the MR elements and the pinned layer, and current paths positioned above and in electrical communication with the bias layers on either side of the inner layer, each current path extending in the element height direction away from the media-facing surface by a third length.

Abstract translation: 在一个实施例中，磁头包括位于面向介质表面的下磁屏蔽层，位于面向媒体的表面上的下磁屏蔽层上方的被钉扎层，至少两个沿单元高度方向延伸的MR元件， 所述第一长度位于所述被钉扎层上方并且在交叉轨道方向上由内层分离，所述偏置层在所述元件高度方向上延伸位于所述MR元件和被钉扎层的外边缘上的第二长度，并且所述电流路径被定位 并且与内层的任一侧上的偏置层电连通，每个电流路径在元件高度方向上延伸离开面向介质的表面第三长度。

公开(公告)号：US09269383B1

公开(公告)日：2016-02-23

申请号：US14604630

申请日：2015-01-23

Applicant: HGST Netherlands B.V.

Inventor： Masashi Hattori ,  Kouichi Nishioka ,  Takashi Wagatsuma ,  Nobuo Yoshida ,  Kenichi Meguro

IPC: G11B5/39

CPC classification number: G11B5/3932 ,  G11B5/3912 ,  G11B5/3958 ,  G11B5/397 ,  G11B5/398

Abstract: According to one embodiment, a magnetic head includes a lower magnetic shield positioned at a media facing surface of the head, a lower sensor positioned above the lower magnetic shield, the lower sensor including a lower free layer, a middle magnetic shield positioned above the lower sensor at the media facing surface of the head, and a back side antiferromagnetic (AFM) layer positioned behind the lower free layer in an element height direction, the back side AFM layer being configured to provide magnetic stabilization for the middle magnetic shield. In another embodiment, a method includes forming a lower sensor including a lower free layer, forming a back side AFM layer behind the lower free layer in an element height direction, and forming a middle magnetic shield above the lower sensor, wherein the back side AFM layer is configured to provide magnetic stabilization for the middle magnetic shield.

Abstract translation: 根据一个实施例，磁头包括位于头部与介质相对表面的下磁屏蔽，位于下磁屏蔽上方的下传感器，下传感器包括下自由层，位于下部磁屏蔽上方的中间磁屏蔽 传感器在头部的介质面向表面，以及位于元件高度方向上的下自由层之后的后侧反铁磁（AFM）层，后侧AFM层被配置为为中间磁屏蔽提供磁稳定。 在另一个实施例中，一种方法包括形成下部传感器，其包括下自由层，在元件高度方向上在下自由层之后形成背面AFM层，并在下传感器上方形成中间磁屏蔽，其中背侧AFM 层被配置为为中间磁屏蔽提供磁稳定。

公开(公告)号：US09042060B2

公开(公告)日：2015-05-26

申请号：US14037254

申请日：2013-09-25

Applicant: HGST Netherlands B.V.

Inventor： Nobuo Yoshida ,  Hideki Mashima ,  Norihiro Iwata ,  Takahiro Ibusuki

IPC: G11B5/39

CPC classification number: G11B5/3932 ,  G11B5/3909 ,  G11B5/3912 ,  Y10T29/49032

Abstract: In one embodiment, a magnetic head includes a lower shield, a magnetoresistive (MR) film positioned above the lower shield, the MR film including a pinned layer, an intermediate layer positioned above the pinned layer, and a free layer positioned above the intermediate layer, the free layer being configured for sensing data on a magnetic medium, wherein a track width of the MR film is defined by a width of the free layer in a cross-track direction, a bias layer positioned on both sides of the MR film in the cross-track direction, a track insulating film positioned on both sides of the MR film in the cross-track direction and between the MR film and the bias layer, and an upper shield positioned above the bias layer and the MR film, wherein a length of the free layer in an element height direction perpendicular to an air bearing surface of the magnetic head is less than a length of the pinned layer in the element height direction.

Abstract translation: 在一个实施例中，磁头包括位于下屏蔽层上方的下屏蔽，磁阻（MR）膜，MR膜包括钉扎层，位于钉扎层上方的中间层和位于中间层上方的自由层 ，所述自由层被配置用于感测磁介质上的数据，其中所述MR膜的轨道宽度由所述自由层在交叉轨道方向上的宽度限定，所述偏置层位于所述MR膜的两侧 交叉轨道方向，位于MR膜的横向方向两侧和MR膜与偏置层之间的轨道绝缘膜，以及位于偏置层和MR膜上方的上屏蔽，其中a 在与磁头的空气支承面垂直的元件高度方向上的自由层的长度小于被钉扎层在元件高度方向上的长度。

公开(公告)号：US08953284B1

公开(公告)日：2015-02-10

申请号：US14085734

申请日：2013-11-20

Applicant: HGST Netherlands B.V.

Inventor： Hideki Mashima ,  Nobuo Yoshida ,  Masashi Hattori ,  Tutomu Yasuda

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3948

Abstract: In one embodiment, a magnetic head includes a lower shield layer positioned at a media-facing surface of the magnetic head, at least two magnetoresistive (MR) elements positioned above the lower shield layer, each MR element extending in an element height direction away from the media-facing surface of the magnetic head, back wiring layers positioned above at least one lower layer of each of the MR elements at a position away from the media-facing surface of the magnetic head in the element height direction, wherein the back wiring layers are configured to electrically communicate with the MR elements and configured to separately extract signals from each MR element during a read operation, and an upper shield layer positioned above the MR elements that is configured to electrically communicate with the MR elements.

Abstract translation: 在一个实施例中，磁头包括位于磁头的面向介质表面的下屏蔽层，位于下屏蔽层上方的至少两个磁阻（MR）元件，每个MR元件沿元件高度方向延伸远离 所述磁头的面向介质的表面，背面布线层位于远离所述磁头的与所述介质相对表面在元件高度方向上的位置的每个所述MR元件的至少一个下层之上，其中所述背面布线 层被配置为与MR元件电通信并且被配置为在读取操作期间单独提取来自每个MR元件的信号，以及位于配置为与MR元件电连通的MR元件之上的上屏蔽层。

公开(公告)号：US20140133052A1

公开(公告)日：2014-05-15

申请号：US13677196

申请日：2012-11-14

Applicant: HGST NETHERLANDS B.V.

Inventor： Kenichi Meguro ,  Keizo Kato ,  Susumu Okamura ,  Nobuo Yoshida

IPC: G11B5/127 ,  G11B5/39

CPC classification number: G11B5/398 ,  G11B5/3906 ,  G11B5/3909 ,  G11B5/3929 ,  Y10T428/1121

Abstract: A magnetic read head having a reduced read gap and a stable magnetic pinned layer structure. The sensor includes a seed layer that has a surface formed with an anisotropic texture. A magnetic pinned layer formed over the seed layer has a body centered cubic structure which causes the pinned layer structure to have a magnetic anisotropy with an easy axis oriented perpendicular to the air bearing surface when deposited over the textured seed layer. A magnetic free layer structure formed over the pinned layer structure and over a non-magnetic barrier layer has a face centered cubic structure which causes the magnetic free layer to have a magnetic anisotropy with an easy axis oriented parallel with the air bearing surface.

Abstract translation: 具有减小的读取间隙和稳定的磁性固定层结构的磁读头。 传感器包括具有形成有各向异性纹理的表面的种子层。 形成在种子层上方的磁性钉扎层具有体心立方结构，这使得被钉扎层结构具有磁性各向异性，当沉积在纹理种子层上时，易于轴定向成垂直于空气轴承表面。 形成在被钉扎层结构之上并且在非磁性阻挡层之上的无磁性层结构具有面心立方结构，其使得磁性自由层具有与空气轴承表面平行定向的容易轴的磁各向异性。

公开(公告)号：US09542962B2

公开(公告)日：2017-01-10

申请号：US14604617

申请日：2015-01-23

Applicant: HGST Netherlands B.V.

Inventor： Hideki Mashima ,  Kenichi Meguro ,  Nobuo Yoshida ,  Toyoshige Noridomi ,  Tomohiro Saito ,  Kaori Suzuki

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/3932 ,  G11B5/3948 ,  G11B5/3958 ,  G11B5/397

Abstract: In one embodiment, a magnetic head includes a lower magnetic shield layer positioned at a media-facing surface, a pinned layer positioned above the lower magnetic shield layer at the media-facing surface, at least two MR elements extending in an element height direction by a first length positioned above the pinned layer and separated in a cross-track direction by an inner layer, bias layers extending in the element height direction by a second length positioned on outside edges of the MR elements and the pinned layer, and current paths positioned above and in electrical communication with the bias layers on either side of the inner layer, each current path extending in the element height direction away from the media-facing surface by a third length.

Abstract translation: 在一个实施例中，磁头包括位于面向介质表面的下磁屏蔽层，位于面向媒体的表面上的下磁屏蔽层上方的被钉扎层，至少两个沿单元高度方向延伸的MR元件， 所述第一长度位于所述被钉扎层上方并且在交叉轨道方向上由内层分离，所述偏置层在所述元件高度方向上延伸位于所述MR元件和被钉扎层的外边缘上的第二长度，并且所述电流路径被定位 并且与内层的任一侧上的偏置层电连通，每个电流路径在元件高度方向上延伸离开面向介质的表面第三长度。

公开(公告)号：US09099125B1

公开(公告)日：2015-08-04

申请号：US14513320

申请日：2014-10-14

Applicant: HGST Netherlands B.V.

Inventor： Masashi Hattori ,  Kenichi Meguro ,  Kouichi Nishioka ,  Takashi Wagatsuma ,  Nobuo Yoshida

IPC: G11B5/39 ,  G11B5/115 ,  G11B5/265

CPC classification number: G11B5/3912 ,  G11B5/265 ,  G11B5/3954 ,  G11B5/3958 ,  G11B5/3974 ,  G11B5/4886 ,  G11B5/5539

Abstract: A two-dimensional magnetic recording (TDMR) multi-sensor read head has three stacked sensors separated by magnetic shields. The lower sensor is the primary sensor that is always aligned with the target track. The middle sensor is spaced laterally from the lower sensor a distance substantially equal to the track pitch (TP). The upper sensor is aligned with the lower sensor. The spacing D between the lower and upper sensors is selected to be related to TP and a maximum skew angle, where the skew angle is the angle between a line orthogonal to the sensor and the data track that varies with radial position of the head. The read head is connected to circuitry that selects two of the three sensors to be the active sensors depending on the radial position of the head and thus the skew angle of the head.

Abstract translation: 二维磁记录（TDMR）多传感器读头具有由磁屏蔽分开的三个堆叠传感器。 下传感器是始终与目标轨道对齐的主传感器。 中间传感器与下传感器横向间隔大致等于轨道间距（TP）。 上传感器与下传感器对齐。 选择下传感器和上传感器之间的间距D与TP和最大斜角相关，其中歪斜角是与传感器正交的线与数据轨道之间的角度，该数据轨道随着头部的径向位置而变化。 读取头连接到根据头部的径向位置和因此头部的歪斜角度选择三个传感器中的两个作为有源传感器的电路。