公开(公告)号：US20060209472A1

公开(公告)日：2006-09-21

申请号：US11370185

申请日：2006-03-08

申请人： Katsuhiko Koui ,  Kohichi Tateyama ,  Tomomi Funayama ,  Koichi Kubo ,  Hitoshi Iwasaki ,  Hideaki Fukuzawa

发明人： Katsuhiko Koui ,  Kohichi Tateyama ,  Tomomi Funayama ,  Koichi Kubo ,  Hitoshi Iwasaki ,  Hideaki Fukuzawa

IPC分类号： G11B5/127 ,  G11B5/33

CPC分类号： G11B5/398 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3929 ,  H01L43/08

摘要： A magnetoresistive device includes a magnetoresistive film and a pair of electrodes for applying a sense current substantially perpendicularly to the magnetoresistive film. The magnetoresistive film includes a magnetization pinned film including a first ferromagnetic layer having a magnetization direction substantially pinned in one direction, a magnetization free film including a second ferromagnetic layer whose magnetization direction changes in accordance with an external magnetic field applied thereto, an intermediate layer formed between the magnetization pinned film and the magnetization free film and having an insulating film and a metal conduction portion extending in the film thickness direction of the insulating film, and a layer containing an electrovalent or covalent compound formed near the metal conduction portion.

公开(公告)号：US07196877B2

公开(公告)日：2007-03-27

申请号：US10743130

申请日：2003-12-23

申请人： Masatoshi Yoshikawa ,  Masayuki Takagishi ,  Tomomi Funayama ,  Kohichi Tateyama ,  Hitoshi Iwasaki ,  Hideaki Fukuzawa

发明人： Masatoshi Yoshikawa ,  Masayuki Takagishi ,  Tomomi Funayama ,  Kohichi Tateyama ,  Hitoshi Iwasaki ,  Hideaki Fukuzawa

IPC分类号： G11B5/33

CPC分类号： H01L43/08 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/00 ,  G11B5/313 ,  G11B5/3143 ,  G11B5/3903 ,  G11B2005/3996 ,  H01F10/30 ,  H01F10/3254 ,  H01F10/3268

摘要： A magnetoresistive element includes a magnetoresistive film having a magnetization pinned layer, a magnetization free layer, and a nonmagnetic intermediate layer. A magnetization direction of the magnetization pinned layer is substantially fixed in an external magnetic field, a magnetization direction of the magnetization free layer is configured to change in the external magnetic field, and the nonmagnetic intermediate layer formed between the magnetization pinned layer and the magnetization free layer and has a stacked structure of a first non-metallic intermediate layer/a metal intermediate layer/a second non-metallic intermediate layer. The magnetoresistive element also includes a pair of electrodes coupled to the magnetoresistive film and is configured to provide a current in a direction substantially perpendicular to a surface of the magnetoresistive film.

摘要翻译： 磁阻元件包括具有磁化钉扎层，磁化自由层和非磁性中间层的磁阻膜。 磁化被钉扎层的磁化方向基本上固定在外部磁场中，磁化自由层的磁化方向被配置为在外部磁场中改变，并且形成在磁化钉扎层和无磁化之间的非磁性中间层 并且具有第一非金属中间层/金属中间层/第二非金属中间层的堆叠结构。 磁阻元件还包括耦合到磁阻膜的一对电极，并且被配置为在基本垂直于磁阻膜的表面的方向上提供电流。

公开(公告)号：US20050052787A1

公开(公告)日：2005-03-10

申请号：US10936715

申请日：2004-09-09

申请人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

发明人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

IPC分类号： G11B5/127 ,  G11B5/33 ,  G11B5/39 ,  H01L43/08

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/398 ,  G11B5/3983 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3263 ,  H01L43/08

摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.

摘要翻译： 使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元 其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量 电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。

公开(公告)号：US20080106826A1

公开(公告)日：2008-05-08

申请号：US11965177

申请日：2007-12-27

申请人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

发明人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

IPC分类号： G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/398 ,  G11B5/3983 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3263 ,  H01L43/08

摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.

摘要翻译： 使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元 其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量 电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。

公开(公告)号：US20080106825A1

公开(公告)日：2008-05-08

申请号：US11965123

申请日：2007-12-27

申请人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

发明人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

IPC分类号： G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/398 ,  G11B5/3983 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3263 ,  H01L43/08

摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.

摘要翻译： 使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元 其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量 电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。

公开(公告)号：US07405906B2

公开(公告)日：2008-07-29

申请号：US10936715

申请日：2004-09-09

申请人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

发明人： Tomomi Funayama ,  Masayuki Takagishi ,  Katsuhiko Koui ,  Kohichi Tateyama

IPC分类号： G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/398 ,  G11B5/3983 ,  G11B2005/3996 ,  H01F10/3259 ,  H01F10/3263 ,  H01L43/08

摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.

公开(公告)号：US20100007996A1

公开(公告)日：2010-01-14

申请号：US12457657

申请日：2009-06-17

申请人： Hitoshi Iwasaki ,  Kenichiro Yamada ,  Masayuki Takagishi ,  Tomomi Funayama ,  Masahiro Takashita ,  Mariko Shimizu ,  Soichi Oikawa ,  Katsuhiko Koui

发明人： Hitoshi Iwasaki ,  Kenichiro Yamada ,  Masayuki Takagishi ,  Tomomi Funayama ,  Masahiro Takashita ,  Mariko Shimizu ,  Soichi Oikawa ,  Katsuhiko Koui

IPC分类号： G11B5/33

CPC分类号： B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11B2005/0005 ,  G11B2005/3996

摘要： It is made possible to reduce the write magnetic field generated from the main magnetic pole toward the spin torque oscillator, so as to reduce the variation in the oscillation characteristics of the spin torque oscillator, and reduce the current required for oscillation. The magnetic head assembly includes: a recording magnetic pole; a spin torque oscillator that has first and second magnetic layers, and an intermediate layer interposed between the first and second magnetic layers, the spin torque oscillator generating a high-frequency magnetic field by applying a current between the first and second magnetic layers; and a third magnetic layer that is placed adjacent to at least part of a side face of the second magnetic layer.

摘要翻译： 可以将从主磁极产生的写入磁场减小到自旋转矩振荡器，从而减小自旋转矩振荡器的振荡特性的变化，并且降低振荡所需的电流。 磁头组件包括：记录磁极; 旋转扭矩振荡器，其具有第一和第二磁性层，以及介于所述第一和第二磁性层之间的中间层，所述自旋扭矩振荡器通过在所述第一和第二磁性层之间施加电流而产生高频磁场; 以及与第二磁性层的侧面的至少一部分相邻配置的第三磁性层。

公开(公告)号：US20120275061A1

公开(公告)日：2012-11-01

申请号：US13459610

申请日：2012-04-30

申请人： Masayuki TAKAGISHI ,  Hitoshi Iwasaki ,  Kenichiro Yamada ,  Katsuhiko Koui ,  Tomomi Funayama ,  Masahiro Takashita ,  Mariko Kitazaki ,  Soichi Oikawa

发明人： Masayuki TAKAGISHI ,  Hitoshi Iwasaki ,  Kenichiro Yamada ,  Katsuhiko Koui ,  Tomomi Funayama ,  Masahiro Takashita ,  Mariko Kitazaki ,  Soichi Oikawa

IPC分类号： G11B5/127 ,  G11B5/17

CPC分类号： G11B5/3146 ,  G11B5/02 ,  G11B5/1278 ,  G11B5/65 ,  G11B2005/0005 ,  G11B2005/0024 ,  H01F10/123 ,  H01L43/08

摘要： According to one embodiment, a magnetic recording device includes a magnetic recording head and a magnetic recording medium. The magnetic recording head includes a main magnetic pole, a shield and a stacked structure. The main magnetic pole has a medium facing surface and a main magnetic pole side surface. The shield has a shield side surface. The stacked structure is provided between the main magnetic pole and shield, and includes first and second magnetic layers, and an intermediate layer. The magnetic recording medium includes a backing layer and a magnetic recording layer. A distance between an end portion of the medium facing surface on a side of the stacked structure and the backing layer is twice or more of a distance between the main magnetic pole side surface and the shield side surface.

摘要翻译： 根据一个实施例，磁记录装置包括磁记录头和磁记录介质。 磁记录头包括主磁极，屏蔽和堆叠结构。 主磁极具有中等面向表面和主磁极侧表面。 屏蔽有屏蔽侧面。 堆叠结构设置在主磁极和屏蔽之间，并且包括第一和第二磁性层以及中间层。 磁记录介质包括背衬层和磁记录层。 层叠结构一侧的介质相对表面的端部与背衬层之间的距离是主磁极侧表面和屏蔽侧表面之间的距离的两倍或更多。

公开(公告)号：US20110228423A1

公开(公告)日：2011-09-22

申请号：US12880676

申请日：2010-09-13

申请人： Katsuhiko Koui ,  Kenichiro Yamada ,  Mariko Kitazaki ,  Hitoshi Iwasaki ,  Masayuki Takagishi ,  Tomomi Funayama ,  Masahiro Takashita ,  Soichi Oikawa

发明人： Katsuhiko Koui ,  Kenichiro Yamada ,  Mariko Kitazaki ,  Hitoshi Iwasaki ,  Masayuki Takagishi ,  Tomomi Funayama ,  Masahiro Takashita ,  Soichi Oikawa

IPC分类号： G11B5/127 ,  G11B5/48 ,  G11B21/02

CPC分类号： G11B5/3146 ,  G11B5/1278 ,  G11B5/3116 ,  G11B2005/0024

摘要： A magnetic recording head includes a first ferromagnetic layer, an intermediate layer, a third ferromagnetic layer, a first magnetic pole and a second magnetic pole. The intermediate layer is provided between the first ferromagnetic layer and the second ferromagnetic layer. The third ferromagnetic layer includes a CoIr alloy and is provided so that the first ferromagnetic layer is sandwiched between the third ferromagnetic layer and the intermediate layer. The first magnetic pole is provided so that the third ferromagnetic layer is sandwiched between the first magnetic pole and the first ferromagnetic layer. The second magnetic pole is provided so that the second ferromagnetic layer is sandwiched between the second magnetic pole and the intermediate layer.

摘要翻译： 磁记录头包括第一铁磁层，中间层，第三铁磁层，第一磁极和第二磁极。 中间层设置在第一铁磁层和第二铁磁层之间。 第三铁磁层包括CoIr合金，并且被设置为使得第一铁磁层夹在第三铁磁层和中间层之间。 第一磁极被设置成使得第三铁磁层夹在第一磁极和第一铁磁层之间。 第二磁极被设置成使得第二铁磁层夹在第二磁极和中间层之间。

公开(公告)号：US20100073806A1

公开(公告)日：2010-03-25

申请号：US12585459

申请日：2009-09-15

申请人： Katsuhiko Koui ,  Hitoshi Iwasaki ,  Masayuki Takagishi ,  Kenichiro Yamada ,  Tomomi Funayama ,  Masahiro Takashita ,  Mariko Shimizu ,  Soichi Oikawa

发明人： Katsuhiko Koui ,  Hitoshi Iwasaki ,  Masayuki Takagishi ,  Kenichiro Yamada ,  Tomomi Funayama ,  Masahiro Takashita ,  Mariko Shimizu ,  Soichi Oikawa

IPC分类号： G11B21/02 ,  G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/02 ,  G11B5/3133 ,  G11B5/3146 ,  G11B2005/0002 ,  H03B15/006

摘要： It is made possible to improve the recording resolution. A magnetic recording head includes: a magnetic pole that has a first magnetic portion including an air bearing surface, and generates a write magnetic field; and a spin torque oscillator that is formed on the air bearing surface of the magnetic pole, and is formed with a stack structure including a first magnetic layer, a second magnetic layer, and a nonmagnetic layer interposed between the first magnetic layer and the second magnetic layer, the second magnetic layer generating a high-frequency magnetic field when current is applied between the first magnetic layer and the second magnetic layer.

摘要翻译： 可以提高记录分辨率。 磁记录头包括：具有包括空气轴承表面的第一磁性部分并产生写入磁场的磁极; 以及旋转扭矩振荡器，其形成在所述磁极的所述空气支承面上，并且形成有堆叠结构，所述堆叠结构包括介于所述第一磁性层和所述第二磁性层之间的第一磁性层，第二磁性层和非磁性层 层，当第一磁性层和第二磁性层之间施加电流时，第二磁性层产生高频磁场。