公开(公告)号：US08446691B2

公开(公告)日：2013-05-21

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

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：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：US08472140B2

公开(公告)日：2013-06-25

申请号：US13404046

申请日：2012-02-24

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

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

IPC分类号： G11B5/147

CPC分类号： G11B5/3146 ,  B82Y25/00 ,  G11B5/02 ,  G11B5/3133 ,  H01F10/3254 ,  H01F10/3286 ,  H01L43/08

摘要： A magnetic recorder includes: a magnetic recording medium; a reproducing head; a magnetic recording head including: a main magnetic pole; a first magnetic layer containing a TM alloy; a second magnetic layer containing a TM alloy or an RE-TM alloy; a third magnetic layer containing an RE-TM alloy; a first intermediate layer provided between the first magnetic layer and the second magnetic layer; and a second intermediate layer provided between the second magnetic layer and the third magnetic layer; and a signal processing portion which performs signal writing into the magnetic recording medium by using the magnetic recording head and reading from the magnetic recording medium by using the reproducing head.

摘要翻译： 磁记录器包括：磁记录介质; 再现头 磁记录头，包括：主磁极; 含有TM合金的第一磁性层; 含有TM合金或RE-TM合金的第二磁性层; 含有RE-TM合金的第三磁性层; 设置在所述第一磁性层和所述第二磁性层之间的第一中间层; 以及设置在所述第二磁性层和所述第三磁性层之间的第二中间层; 以及信号处理部分，其通过使用磁记录头并通过使用再现头从磁记录介质读取来执行信号写入磁记录介质。

公开(公告)号：US08553359B2

公开(公告)日：2013-10-08

申请号：US12853690

申请日：2010-08-10

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

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

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/315 ,  G11B5/743

摘要： A magnetic recording head includes a magnetic pole, a spin torque oscillator, a first shield and a second shield. The magnetic pole has an air-bearing surface. The spin torque oscillator is provided so that a first side of the spin torque oscillator faces the magnetic pole in a first direction parallel to the air-bearing surface. The first shield includes a granular magnetic material, and is provided so that two portions of the first shield sandwich the spin torque oscillator in a second direction which is parallel to the air-bearing surface and perpendicular to the first direction. The second shield is provided on a second side of the spin torque oscillator opposite to the first side.

摘要翻译： 磁记录头包括磁极，自旋转矩振荡器，第一屏蔽和第二屏蔽。 磁极具有空气轴承表面。 旋转扭矩振荡器被设置成使得旋转扭矩振荡器的第一侧在平行于空气轴承表面的第一方向上面对磁极。 第一屏蔽包括颗粒状磁性材料，并且被设置成使得第一屏蔽的两个部分在平行于空气轴承表面并垂直于第一方向的第二方向上夹住旋转扭矩振荡器。 第二屏蔽设置在与第一侧相反的自旋扭矩振荡器的第二侧上。

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：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。

公开(公告)号：US08320079B2

公开(公告)日：2012-11-27

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： G11B5/127 ,  G11B5/187

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：US20100007992A1

公开(公告)日：2010-01-14

申请号：US12453855

申请日：2009-05-26

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

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

IPC分类号： G11B5/48

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/1278 ,  G11B5/3146 ,  G11B2005/0005 ,  G11B2005/0024

摘要： A magnetic head assembly includes a magnetic recording head, a head slider, a suspension and an actuator arm. The magnetic recording head includes: a main magnetic pole; an adjustment magnetic pole provided together with the main magnetic pole; a spin torque oscillator; a main magnetic pole coil being wound around the main magnetic pole; and an adjustment magnetic pole coil being wound around the adjustment magnetic pole. At least part of the spin torque oscillator is provided between the main magnetic pole and the adjustment magnetic pole. A way of winding of the adjustment magnetic pole coil is different from a way of winding of the main magnetic pole coil. The magnetic recording head is mounted on the head slider. The head slider is mounted on one end of the suspension. The actuator arm is connected to the other end of the suspension.

摘要翻译： 磁头组件包括磁记录头，磁头滑块，悬架和致动臂。 磁记录头包括：主磁极; 与主磁极一起设置的调节磁极; 自旋转矩振荡器; 主磁极线圈缠绕在主磁极上; 并且调节磁极线圈缠绕在调节磁极上。 旋转扭矩振荡器的至少一部分设置在主磁极和调节磁极之间。 调整用磁极线圈的卷绕方式与主磁极线圈的卷绕方式不同。 磁记录头安装在磁头滑块上。 磁头滑块安装在悬架的一端。 执行器臂连接到悬架的另一端。

公开(公告)号：US08238058B2

公开(公告)日：2012-08-07

申请号：US12737691

申请日：2011-02-07

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

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

IPC分类号： G11B5/127

CPC分类号： G11B5/02 ,  G11B5/1278 ,  G11B5/314 ,  G11B2005/0005 ,  G11B2005/0024

摘要： According to one embodiment, a magnetic recording head includes a main magnetic pole, a shield, and a stacked structure body. The shield is provided to oppose the main magnetic pole. The stacked structure body is provided between the main magnetic pole and the shield. The stacked structure body includes a first magnetic layer, a second magnetic layer, and an intermediate layer. The first magnetic layer has coercivity lower than a magnetic field applied from the main magnetic pole. A size of a film surface of the second magnetic layer is larger than a size of a film surface of the first magnetic layer. The intermediate layer is provided between the first magnetic layer and the second magnetic layer and is made of a nonmagnetic material. A current is configured to pass between the first magnetic layer and the second magnetic layer.

摘要翻译： 根据一个实施例，磁记录头包括主磁极，屏蔽和堆叠结构体。 提供屏蔽以与主磁极相对。 堆叠结构体设置在主磁极和屏蔽之间。 叠层结构体包括第一磁性层，第二磁性层和中间层。 第一磁性层具有低于从主磁极施加的磁场的矫顽力。 第二磁性层的膜表面的尺寸大于第一磁性层的膜表面的尺寸。 中间层设置在第一磁性层和第二磁性层之间，并且由非磁性材料制成。 电流配置成在第一磁性层和第二磁性层之间通过。