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公开(公告)号：US08295009B2
公开(公告)日：2012-10-23
申请号：US13214033
申请日：2011-08-19
申请人： Kenichiro Yamada , Hitoshi Iwasaki , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu , Shuichi Murakami , Tadashi Kai
发明人： Kenichiro Yamada , Hitoshi Iwasaki , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu , Shuichi Murakami , Tadashi Kai
CPC分类号： G01S19/36 , G01S19/30 , Y10T428/1186
摘要： An example magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes is operable to pass a current through the laminated body.
摘要翻译： 一个示例磁记录头包括：主磁极; 层压体; 和一对电极。 层叠体包括具有比由主磁极施加的磁场低的矫顽力的第一磁性层，具有低于由主磁极施加的磁场的矫顽力的第二磁性层，以及设置在第一磁性体之间的中间层 层和第二磁性层。 该对电极可操作以使电流通过层压体。
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62.发明授权公开(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。
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公开(公告)号：US20120182646A1
公开(公告)日：2012-07-19
申请号：US13431004
申请日：2012-03-27
申请人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
发明人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
CPC分类号： G11B5/3143 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.
摘要翻译： 根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽， 轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。
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公开(公告)号：US08154825B2
公开(公告)日：2012-04-10
申请号：US12232391
申请日：2008-09-16
申请人： Masahiro Takashita , Hitoshi Iwasaki , Kenichiro Yamada , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Mariko Shimizu
发明人： Masahiro Takashita , Hitoshi Iwasaki , Kenichiro Yamada , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Mariko Shimizu
IPC分类号： G11B5/127
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B2005/0005 , G11B2005/0024
摘要： It is made possible to provide a magnetic head that can stabilize the high-frequency magnetic field generated from the spin torque oscillator. A magnetic head includes: first and second main magnetic poles; and a spin torque oscillator provided between the first and second main magnetic poles.
摘要翻译： 可以提供一种能够稳定由自旋转矩振荡器产生的高频磁场的磁头。 磁头包括：第一和第二主磁极; 以及设置在第一和第二主磁极之间的自旋扭矩振荡器。
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65.发明授权Magnetic recording apparatus utilizing a spin torque oscillator which interacts with an antenna layer in the magnetic recording medium 有权利用与磁记录介质中的天线层相互作用的自旋扭矩振荡器的磁记录装置公开(公告)号：US08120875B2
公开(公告)日：2012-02-21
申请号：US12512237
申请日：2009-07-30
申请人： Masayuki Takagishi , Kenichiro Yamada , Hitoshi Iwasaki , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
发明人： Masayuki Takagishi , Kenichiro Yamada , Hitoshi Iwasaki , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
IPC分类号： G11B5/127
CPC分类号： G11B5/314 , G11B2005/001 , G11B2005/0024
摘要： A magnetic recording apparatus includes a magnetic recording head having a magnetic pole and a spin torque oscillator, the spin torque oscillator being placed adjacent to the magnetic pole and includes at least two magnetic layers of a first magnetic layer and a second magnetic layer, and a magnetic recording medium includes two magnetic layers of a recording layer and an antenna layer, the recording layer including a hard magnetic material, such that the antenna layer is formed closer to the magnetic recording head than the recording layer, in which the antenna layer has a resonance frequency fa lower than a resonance frequency fr of the recording layer, greater than a resonance frequency of the second magnetic layer, and the recording layer and the antenna layer are ferromagnetically coupled to each other.
摘要翻译： 磁记录装置包括具有磁极和自旋扭矩振荡器的磁记录头，该旋转扭矩振荡器被放置成与磁极相邻，并且包括至少两个第一磁性层和第二磁性层的磁性层，以及 磁记录介质包括记录层和天线层的两个磁性层，记录层包括硬磁性材料，使得天线层比记录层更靠近磁记录头，其中天线层具有 谐振频率fa低于记录层的谐振频率fr，大于第二磁性层的共振频率，并且记录层和天线层彼此铁磁耦合。
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公开(公告)号：US08081397B2
公开(公告)日：2011-12-20
申请号：US12457674
申请日：2009-06-18
申请人： Tomomi Funayama , Kenichiro Yamada , Katsuhiko Koui , Hitoshi Iwasaki , Masayuki Takagishi , Masahiro Takashita , Mariko Shimizu , Soichi Oikawa
发明人： Tomomi Funayama , Kenichiro Yamada , Katsuhiko Koui , Hitoshi Iwasaki , Masayuki Takagishi , Masahiro Takashita , Mariko Shimizu , Soichi Oikawa
IPC分类号： G11B5/127
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3153 , G11B2005/0005
摘要： A magnetic head assembly includes a magnetic recording head, a main magnetic pole, a head slider, a suspension and an actuator arm. The magnetic recording head includes a main magnetic pole having an air bearing surface facing a magnetic recording medium; and a stacked structure having, a first magnetic layer, a second magnetic layer, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. A stacked plane of the stacked structure is inclined with respect to the air bearing surface. 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，主磁极，磁头滑块，悬架和致动器臂。 磁记录头包括具有面向磁记录介质的空气轴承表面的主磁极; 以及具有第一磁性层，第二磁性层和设置在第一磁性层和第二磁性层之间的中间层的层叠结构。 堆叠结构的层叠平面相对于空气轴承表面倾斜。 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。
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67.发明申请公开(公告)号：US20110205655A1
公开(公告)日：2011-08-25
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
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。
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公开(公告)号：US20100220415A1
公开(公告)日：2010-09-02
申请号：US12780269
申请日：2010-05-14
申请人： Kenichiro Yamada , Hitoshi Iwasaki , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu , Shuichi Murakami , Tadashi Kai
发明人： Kenichiro Yamada , Hitoshi Iwasaki , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu , Shuichi Murakami , Tadashi Kai
IPC分类号： G11B5/33
CPC分类号： G11B5/17 , G11B5/02 , G11B5/1278 , G11B5/3133 , G11B5/3146 , G11B2005/0002 , G11B2005/0024
摘要： A magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes are operable to pass a current through the laminated body.
摘要翻译： 磁记录头包括：主磁极; 层压体; 和一对电极。 层叠体包括具有比由主磁极施加的磁场低的矫顽力的第一磁性层，具有低于由主磁极施加的磁场的矫顽力的第二磁性层，以及设置在第一磁性体之间的中间层 层和第二磁性层。 该对电极可操作以使电流通过层叠体。
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公开(公告)号：US20090316304A1
公开(公告)日：2009-12-24
申请号：US12457674
申请日：2009-06-18
申请人： Tomomi Funayama , Kenichiro Yamada , Katsuhiko Koui , Hitoshi Iwasaki , Masayuki Takagishi , Masahiro Takashita , Mariko Shimizu , Soichi Oikawa
发明人： Tomomi Funayama , Kenichiro Yamada , Katsuhiko Koui , Hitoshi Iwasaki , Masayuki Takagishi , Masahiro Takashita , Mariko Shimizu , Soichi Oikawa
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3153 , G11B2005/0005
摘要： A magnetic head assembly includes a magnetic recording head, a main magnetic pole, a head slider, a suspension and an actuator arm. The magnetic recording head includes a main magnetic pole having an air bearing surface facing a magnetic recording medium; and a stacked structure having, a first magnetic layer, a second magnetic layer, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. A stacked plane of the stacked structure is inclined with respect to the air bearing surface. 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，主磁极，磁头滑块，悬架和致动器臂。 磁记录头包括具有面向磁记录介质的空气轴承表面的主磁极; 以及具有第一磁性层，第二磁性层和设置在第一磁性层和第二磁性层之间的中间层的层叠结构。 堆叠结构的层叠平面相对于空气轴承表面倾斜。 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。
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公开(公告)号：US20090059423A1
公开(公告)日：2009-03-05
申请号：US12153490
申请日：2008-05-20
申请人： Kenichiro Yamada , Hitoshi Iwasaki , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
发明人： Kenichiro Yamada , Hitoshi Iwasaki , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
IPC分类号： G11B5/33
CPC分类号： G11B5/02 , G11B5/1278 , G11B5/314 , G11B5/3153 , G11B2005/0002
摘要： A magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes operable to pass a current through the laminated body. The laminated body includes a first magnetic layer, a second magnetic layer, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. A lamination direction of the laminated body is substantially parallel to a medium moving direction. In a first direction parallel to an air bearing surface and perpendicular to the lamination direction, the laminated body has a protruding portion that protrudes beyond an end of a surface of the main magnetic pole facing the laminated body.
摘要翻译： 磁记录头包括：主磁极; 层压体; 以及可操作以使电流通过层叠体的一对电极。 层叠体包括第一磁性层，第二磁性层和设置在第一磁性层和第二磁性层之间的中间层。 层叠体的层叠方向大致平行于介质移动方向。 在平行于空气轴承面并与层叠方向垂直的第一方向上，层叠体具有突出部，该突出部突出超过面对层叠体的主磁极的表面的端部。
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