公开(公告)号：US08760821B1

公开(公告)日：2014-06-24

申请号：US13776553

申请日：2013-02-25

Applicant: HGST Netherlands B.V.

Inventor： Masashi Hattori ,  Kouichi Nishioka ,  Katsumi Hoshino ,  Hideki Mashima

IPC: G11B5/39

CPC classification number: G11B5/398 ,  G11B5/3163

Abstract: According to one embodiment, a method for forming a magnetic head having a current perpendicular to plan (CPP) sensor, includes forming a magnetoresistance effect film, performing a subtractive process for defining a back edge and a height length of the magnetoresistance effect film, depositing an insulating film adjacent the back edge of the magnetoresistance effect film, and ion milling at least an upper surface of a first portion of the insulating film located closest to the magnetoresistance effect film, where the upper surface of the first portion of the insulating film lies substantially along a plane. After the ion milling, the insulating film has no overlap of the insulating film above and/or onto the magnetoresistance effect film and no bulging in a region immediately adjacent a boundary between the insulating film and the magnetoresistance effect film.

Abstract translation: 根据一个实施例，用于形成具有垂直于平面（CPP）传感器的电流的磁头的方法包括形成磁阻效应膜，执行用于限定磁阻效应膜的后沿和高度长度的减法处理， 邻近磁阻效应膜的后缘的绝缘膜，以及离绝缘膜的第一部分的上表面位于最靠近磁阻效应膜的绝缘膜的第一部分的至少上表面离子研磨 基本上沿着一个平面。 在离子研磨之后，绝缘膜与绝缘膜和磁阻效应膜之间的边界附近的区域中没有与上述绝缘膜和/或上述磁阻效应膜的重叠，也没有凸起。

公开(公告)号：US20150228297A1

公开(公告)日：2015-08-13

申请号：US14178179

申请日：2014-02-11

Applicant: HGST NETHERLANDS B.V.

Inventor： Takashi Wagatsuma ,  Yukimasa Okada ,  Katsumi Hoshino ,  Kouji Kataoka

IPC: G11B5/39 ,  G11B5/60

CPC classification number: G11B5/3929 ,  G11B5/3909 ,  G11B5/398 ,  G11B5/6082 ,  G11B2005/3996

Abstract: A magnetic read sensor having an extended pinned layer and having a free layer structure with a back edge formed at an angle for optimizing sensor performance and pinned layer pinning. The magnetic free layer has a back edge that is formed at an angle of between 6 and 10 degrees relative to a plane parallel with the air bearing surface plane. The magnetic sensor can be formed by forming the free layer stripe height with an ion milling that is performed at an angle of 6 to 10 degrees relative to normal.

Abstract translation: 磁读取传感器，其具有延伸的被钉扎层并且具有自由层结构，其具有以一定角度形成的后边缘，以优化传感器性能和固定层钉扎。 磁性层具有相对于与空气支承面平面平行的平面以6度至10度的角度形成的后缘。 磁性传感器可以通过用相对于法线以6至10度的角度执行的离子铣削形成自由层条纹高度而形成。

公开(公告)号：US09019649B2

公开(公告)日：2015-04-28

申请号：US14260172

申请日：2014-04-23

Applicant: HGST Netherlands B.V.

Inventor： Yukimasa Okada ,  Katsumi Hoshino ,  Kouji Kataoka ,  Takashi Wagatsuma

IPC: G11B21/02 ,  G11B20/18 ,  G11B5/02 ,  G11B21/12 ,  G11B21/22 ,  G11B5/60

CPC classification number: G11B20/18 ,  G11B5/02 ,  G11B5/607 ,  G11B21/12 ,  G11B21/22 ,  G11B2220/2516

Abstract: In one embodiment, a magnetic disk device includes a magnetic disk medium, at least one magnetic head having at least one of: a magnetic read element configured to read data from the magnetic disk medium and a magnetic write element configured to write data to the magnetic disk medium, and a heating element configured to generate heat upon application of a voltage/current thereto, wherein the heating element is positioned on, near, or within the magnetic head, a drive mechanism for passing the magnetic disk medium over the at least one magnetic head, and a controller electrically coupled to the at least one magnetic head for controlling operation of the at least one magnetic head, wherein the controller is configured to retract the at least one magnetic head from a flying state above the magnetic disk medium and apply the voltage/current to the heating element while the magnetic head is retracted.

Abstract translation: 在一个实施例中，磁盘装置包括磁盘介质，至少一个磁头，其具有以下至少一个：磁读取元件，被配置为从磁盘介质读取数据;磁写入元件，被配置为将数据写入磁 磁盘介质和被配置为在施加电压/电流时产生热量的加热元件，其中所述加热元件位于所述磁头的附近或内部，驱动机构，用于使所述磁盘介质通过所述至少一个 磁头以及与所述至少一个磁头电耦合以控制所述至少一个磁头的操作的控制器，其中所述控制器被配置为将所述至少一个磁头从所述磁盘介质上方的飞行状态缩回并应用 在磁头收回时到加热元件的电压/电流。

公开(公告)号：US09099123B1

公开(公告)日：2015-08-04

申请号：US14178179

申请日：2014-02-11

Applicant: HGST Netherlands B.V.

Inventor： Takashi Wagatsuma ,  Yukimasa Okada ,  Katsumi Hoshino ,  Kouji Kataoka

IPC: G11B5/39

CPC classification number: G11B5/3929 ,  G11B5/3909 ,  G11B5/398 ,  G11B5/6082 ,  G11B2005/3996

Abstract: A magnetic read sensor having an extended pinned layer and having a free layer structure with a back edge formed at an angle for optimizing sensor performance and pinned layer pinning. The magnetic free layer has a back edge that is formed at an angle of between 6 and 10 degrees relative to a plane parallel with the air bearing surface plane. The magnetic sensor can be formed by forming the free layer stripe height with an ion milling that is performed at an angle of 6 to 10 degrees relative to normal.

Abstract translation: 磁读取传感器，其具有延伸的被钉扎层并且具有自由层结构，其具有以一定角度形成的后边缘，以优化传感器性能和固定层钉扎。 磁性层具有相对于与空气支承面平面平行的平面以6度至10度的角度形成的后缘。 磁性传感器可以通过用相对于法线以6至10度的角度执行的离子铣削形成自由层条纹高度而形成。

公开(公告)号：US08873203B2

公开(公告)日：2014-10-28

申请号：US13724529

申请日：2012-12-21

Applicant: HGST Netherlands B.V.

Inventor： Katsumi Hoshino ,  Kouji Kataoka ,  Takashi Wagatsuma ,  Yukimasa Okada

IPC: G11B5/39 ,  G11B19/20 ,  G11B5/10 ,  G11B5/11

CPC classification number: G11B5/11 ,  G11B5/3912 ,  G11B5/398 ,  G11B19/20

Abstract: A magnetic head according to one embodiment includes a read sensor adapted for sensing an external magnetic field; an upper magnetic shield positioned above the read sensor along an air bearing surface (ABS) of the read sensor; a lower magnetic shield positioned below the read sensor along the ABS of the read sensor; a rear insulating layer positioned on a rear side of the read sensor, the rear side being on an opposite side of the read sensor as the ABS of the read sensor; and a soft magnetic layer positioned near the rear side of the read sensor opposite the ABS of the read sensor, wherein the rear insulating layer is positioned between the soft magnetic layer and the read sensor, and wherein the rear insulating layer is positioned between the soft magnetic layer and the lower magnetic shield.

Abstract translation: 根据一个实施例的磁头包括适于感测外部磁场的读取传感器; 位于读取传感器上方的读取传感器的空气支承表面（ABS）的上磁屏蔽; 沿着读取传感器的ABS位于读取传感器下方的下部磁屏蔽; 位于所述读取传感器的后侧的后部绝缘层，所述背面位于所述读取传感器的与所述读取传感器的ABS相反的一侧; 以及位于所述读取传感器的与所述读取传感器的ABS相对的后侧附近的软磁性层，其中所述后部绝缘层位于所述软磁性层和所述读取传感器之间，并且其中所述后部绝缘层位于所述软性 磁层和下磁屏蔽。

公开(公告)号：US20140226237A1

公开(公告)日：2014-08-14

申请号：US14260172

申请日：2014-04-23

Applicant: HGST Netherlands B.V.

Inventor： Yukimasa Okada ,  Katsumi Hoshino ,  Kouji Kataoka ,  Takashi Wagatsuma

IPC: G11B20/18

CPC classification number: G11B20/18 ,  G11B5/02 ,  G11B5/607 ,  G11B21/12 ,  G11B21/22 ,  G11B2220/2516

Abstract: In one embodiment, a magnetic disk device includes a magnetic disk medium, at least one magnetic head having at least one of: a magnetic read element configured to read data from the magnetic disk medium and a magnetic write element configured to write data to the magnetic disk medium, and a heating element configured to generate heat upon application of a voltage/current thereto, wherein the heating element is positioned on, near, or within the magnetic head, a drive mechanism for passing the magnetic disk medium over the at least one magnetic head, and a controller electrically coupled to the at least one magnetic head for controlling operation of the at least one magnetic head, wherein the controller is configured to retract the at least one magnetic head from a flying state above the magnetic disk medium and apply the voltage/current to the heating element while the magnetic head is retracted.

Abstract translation: 在一个实施例中，磁盘装置包括磁盘介质，至少一个磁头，其具有以下至少一个：磁读取元件，被配置为从磁盘介质读取数据;磁写入元件，被配置为将数据写入磁 磁盘介质和被配置为在施加电压/电流时产生热量的加热元件，其中所述加热元件位于所述磁头的附近或内部，驱动机构，用于使所述磁盘介质通过所述至少一个 磁头以及与所述至少一个磁头电耦合以控制所述至少一个磁头的操作的控制器，其中所述控制器被配置为将所述至少一个磁头从所述磁盘介质上方的飞行状态缩回并应用 在磁头收回时到加热元件的电压/电流。

公开(公告)号：US08976492B1

公开(公告)日：2015-03-10

申请号：US14066523

申请日：2013-10-29

Applicant: HGST Netherlands B.V.

Inventor： Kouji Kataoka ,  Takashi Wagatsuma ,  Katsumi Hoshino ,  Takahiro Ibusuki ,  Yukimasa Okada ,  Norihiro Ookawa

IPC: G11B5/127

CPC classification number: G11B5/3912 ,  G11B5/3909 ,  G11B2005/3996

Abstract: In one embodiment, a magnetic head includes a lower shield, a read element positioned above the lower shield at a media-facing surface of the magnetic head, the read element having a free layer, an upper shield positioned above the read element, a first domain control layer having a direction of magnetization in a predetermined direction, the first domain control layer being configured to control a direction of magnetization of the free layer toward the predetermined direction, and a second domain control layer configured to have a magnetization in a same direction as the direction of magnetization of the first domain control layer, the second domain control layer being positioned above the first domain control layer, wherein the first domain control layer is a hard magnetic layer, and wherein the second domain control layer is a soft magnetic layer.

Abstract translation: 在一个实施例中，磁头包括下屏蔽，位于磁头的面向介质表面的下屏蔽上方的读取元件，读取元件具有自由层，位于读取元件上方的上屏蔽件，第一 域控制层，其具有沿预定方向的磁化方向，所述第一域控制层被配置为控制所述自由层朝向所述预定方向的磁化方向;以及第二域控制层，被配置为具有相同方向的磁化 作为第一域控制层的磁化方向，第二域控制层位于第一区域控制层上方，其中第一域控制层是硬磁性层，并且其中第二域控制层是软磁层 。

公开(公告)号：US20140177093A1

公开(公告)日：2014-06-26

申请号：US13724529

申请日：2012-12-21

Applicant: HGST NETHERLANDS B.V.

Inventor： Katsumi Hoshino ,  Kouji Kataoka ,  Takashi Wagatsuma ,  Yukimasa Okada

IPC: G11B5/11 ,  G11B19/20 ,  G11B5/10

CPC classification number: G11B5/11 ,  G11B5/3912 ,  G11B5/398 ,  G11B19/20

Abstract: A magnetic head according to one embodiment includes a read sensor adapted for sensing an external magnetic field; an upper magnetic shield positioned above the read sensor along an air bearing surface (ABS) of the read sensor; a lower magnetic shield positioned below the read sensor along the ABS of the read sensor; a rear insulating layer positioned on a rear side of the read sensor, the rear side being on an opposite side of the read sensor as the ABS of the read sensor; and a soft magnetic layer positioned near the rear side of the read sensor opposite the ABS of the read sensor, wherein the rear insulating layer is positioned between the soft magnetic layer and the read sensor, and wherein the rear insulating layer is positioned between the soft magnetic layer and the lower magnetic shield.

Abstract translation: 根据一个实施例的磁头包括适于感测外部磁场的读取传感器; 位于读取传感器上方的读取传感器的空气支承表面（ABS）的上磁屏蔽; 沿着读取传感器的ABS位于读取传感器下方的下部磁屏蔽; 位于所述读取传感器的后侧的后部绝缘层，所述背面位于所述读取传感器的与所述读取传感器的ABS相反的一侧; 以及位于所述读取传感器的与所述读取传感器的ABS相对的后侧附近的软磁性层，其中所述后部绝缘层位于所述软磁性层和所述读取传感器之间，并且其中所述后部绝缘层位于所述软性 磁层和下磁屏蔽。