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1. 发明授权

US08982611B2 Magnetic memory element and magnetic memory apparatus 有权
标题翻译：磁存储元件和磁存储装置
公开(公告)号：US08982611B2
公开(公告)日：2015-03-17
申请号：US13526961
申请日：2012-06-19
申请人： Tsuyoshi Kondo , Hirofumi Morise , Shiho Nakamura , Junichi Akiyama
发明人： Tsuyoshi Kondo , Hirofumi Morise , Shiho Nakamura , Junichi Akiyama
IPC分类号： G11C11/00 , G11C11/16
CPC分类号： G11C11/1673 , G11C11/161 , Y10S977/933 , Y10S977/935
摘要： A magnetic memory element includes a first magnetic layer, a second magnetic layer, a first intermediate layer, a first magnetic wire, a first input unit, and a first detection unit. The first magnetic layer has magnetization fixed. The second magnetic layer has magnetization which is variable. The first intermediate layer is between the first magnetic layer and the second magnetic layer. The first magnetic wire extends in a first direction perpendicular to a direction connecting from the first magnetic layer to the second magnetic layer and is adjacent to the second magnetic layer. In addition, write-in is performed by propagating a first spin wave through the first magnetic wire and by passing a first current from the first magnetic layer toward the second magnetic layer. Read-out is performed by passing a second current from the first magnetic layer toward the second magnetic layer.
摘要翻译：磁存储元件包括第一磁性层，第二磁性层，第一中间层，第一磁性线，第一输入单元和第一检测单元。第一磁性层具有固定的磁化。第二磁性层具有可变的磁化。第一中间层位于第一磁性层和第二磁性层之间。第一磁性线沿垂直于从第一磁性层连接到第二磁性层的方向的第一方向延伸并与第二磁性层相邻。此外，通过将第一自旋波传播通过第一磁线并通过使第一电流从第一磁性层向第二磁性层传递来执行写入。通过将第二电流从第一磁性层传递到第二磁性层来进行读出。

2. 发明授权

US08400734B2 Magnetic recording head and magnetic recording apparatus 有权
标题翻译：磁记录头和磁记录装置
公开(公告)号：US08400734B2
公开(公告)日：2013-03-19
申请号：US13214012
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
IPC分类号： G11B5/147 , G11B5/23 , G11B5/187
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。

3. 发明授权

US08238060B2 Magnetic recording head and magnetic recording apparatus 有权
标题翻译：磁记录头和磁记录装置
公开(公告)号：US08238060B2
公开(公告)日：2012-08-07
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： G11B5/147 , G11B5/23 , G11B5/187
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。

4. 发明授权

US08139322B2 Magnetic recording head with protruding spin torque oscillator 有权
标题翻译：具有突出自旋扭矩振荡器的磁记录头
公开(公告)号：US08139322B2
公开(公告)日：2012-03-20
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： G11B5/31 , G11B5/235 , G11B5/39
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。

5. 发明授权

US07791829B2 Apparatus for assisting write operation using high frequency magnetic field in disk drive 有权
标题翻译：用于通过磁盘驱动器中的高频磁场辅助写入操作的装置
公开(公告)号：US07791829B2
公开(公告)日：2010-09-07
申请号：US12196628
申请日：2008-08-22
申请人： Akihiko Takeo , Junichi Akiyama , Kenichiro Yamada , Hitoshi Iwasaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
发明人： Akihiko Takeo , Junichi Akiyama , Kenichiro Yamada , Hitoshi Iwasaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B2005/0005 , G11B2005/0024
摘要： According to one embodiment, a disk drive having a spin torque oscillator and designed to perform high frequency assisted writing. The disk drive has a magnetic disk, a magnetic head, a coil, and a drive current controller. The drive current controller controls a drive current to supply to the spin torque oscillator. To record data magnetically in the disk, the drive current controller supplies to the spin torque oscillator the drive current that changes in synchronism with the polarity inversion of the recording current supplied to the coil, which excites the recording magnetic pole of the magnetic head.
摘要翻译：根据一个实施例，一种具有自旋扭矩振荡器并被设计成执行高频辅助写入的盘驱动器。磁盘驱动器具有磁盘，磁头，线圈和驱动电流控制器。驱动电流控制器控制驱动电流供应到自旋扭矩振荡器。为了将数据磁性地记录在盘中，驱动电流控制器向旋转转矩振荡器提供驱动电流，该驱动电流与提供给线圈的记录电流的极性反转同步地变化，这激励磁头的记录磁极。

6. 发明申请

US20090080120A1 Magnetic head and magnetic recording device 有权
标题翻译：磁头和磁记录装置
公开(公告)号：US20090080120A1
公开(公告)日：2009-03-26
申请号：US12232392
申请日：2008-09-16
申请人： Tomomi Funayama , Kenichiro Yamada , Masayuki Takagishi , Masahiro Takashita , Mariko Shimizu , Junichi Akiyama , Hitoshi Iwasaki
发明人： Tomomi Funayama , Kenichiro Yamada , Masayuki Takagishi , Masahiro Takashita , Mariko Shimizu , Junichi Akiyama , Hitoshi Iwasaki
IPC分类号： G11B5/33
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 generates a sufficient high-frequency magnetic field for assisting recording operations, and a magnetic recording device that includes the magnetic head. A magnetic head includes: a recording magnetic pole; a return yoke magnetically coupled to the recording magnetic pole; and at least two spin torque oscillators provided near the recording magnetic pole.
摘要翻译：可以提供一种产生用于辅助记录操作的足够的高频磁场的磁头和包括磁头的磁记录装置。磁头包括：记录磁极; 磁耦合到记录磁极的返回磁轭; 以及设置在记录磁极附近的至少两个自旋扭矩振荡器。

7. 发明申请

US20090080105A1 Magnetic recording head and magnetic recording device 有权
标题翻译：磁记录头和磁记录装置
公开(公告)号：US20090080105A1
公开(公告)日：2009-03-26
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： G11B21/02 , 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。

8. 发明申请

US20090059418A1 MAGNETIC HEAD AND DISK DRIVE WITH HIGH-FREQUENCY ASSISTED WRITING 审中-公开
标题翻译：磁头和磁盘驱动器，高频辅助写字
公开(公告)号：US20090059418A1
公开(公告)日：2009-03-05
申请号：US12196841
申请日：2008-08-22
申请人： Akihiko TAKEO , Tomomi FUNAYAMA , Masayuki TAKAGISHI , Masahiro TAKASHITA , Kenichiro YAMADA , Mariko SHIMIZU , Hitoshi IWASAKI , Junichi AKIYAMA
发明人： Akihiko TAKEO , Tomomi FUNAYAMA , Masayuki TAKAGISHI , Masahiro TAKASHITA , Kenichiro YAMADA , Mariko SHIMIZU , Hitoshi IWASAKI , Junichi AKIYAMA
IPC分类号： G11B21/02
CPC分类号： G11B5/102 , G11B5/314 , G11B5/6064 , G11B5/607 , G11B2005/0005 , G11B2005/0024
摘要： According to one embodiment, a magnetic head having a head slider which holds a magnetic head unit including a heat-generating element for controlling the flying-height and a high-frequency oscillator for performing high-frequency assisted writing, and on which terminals connected to the magnetic head elements are used in the smallest number required. Terminals are mounted on the head slider and are connected to the magnetic head unit. The terminals include at least one current-supplying terminal that is connected to the heat-generating element serving to control the flying height and to the high-frequency oscillator.
摘要翻译：根据一个实施例，一种具有磁头滑块的磁头，该磁头滑动器保持包括用于控制飞行高度的发热元件的磁头单元和用于执行高频辅助写入的高频振荡器，磁头元件以所需的最小数量使用。端子安装在磁头滑块上并连接到磁头单元。端子包括连接到用于控制飞行高度的发热元件和至高频振荡器的至少一个供电端子。

9. 发明申请

US20080304176A1 Magnetic recording head and magnetic recording apparatus 有权
标题翻译：磁记录头和磁记录装置
公开(公告)号：US20080304176A1
公开(公告)日：2008-12-11
申请号：US12155473
申请日：2008-06-04
申请人： Masayuki Takagishi , Kenichiro Yamada , Hitoshi Iwasaki , Junichi Akiyama , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
发明人： Masayuki Takagishi , Kenichiro Yamada , Hitoshi Iwasaki , Junichi Akiyama , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
IPC分类号： G11B5/52 , G11B5/33
CPC分类号： G11B5/1278 , G11B5/3133 , G11B2005/001
摘要： A magnetic recording head includes a recording magnetic pole, and a spin oscillation device including a first magnetic layer having at least one magnetic material layer, a second magnetic layer having at least one magnetic material layer, and a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer. The first magnetic layer and the second magnetic layer are antiferromagnetically coupled and/or magnetostatically coupled to each other. The first magnetic layer and the second magnetic layer are laminated in a direction generally parallel to a medium facing surface and generally parallel to a side surface of the recording magnetic pole intersecting with the medium facing surface.
摘要翻译：磁记录头包括记录磁极，以及包括具有至少一个磁性材料层的第一磁性层，具有至少一个磁性材料层的第二磁性层和设置在第一磁性层之间的第一非磁性层的自旋振荡装置层和第二磁性层。第一磁性层和第二磁性层彼此反铁磁耦合和/或静磁耦合。第一磁性层和第二磁性层沿大致平行于介质相对表面的方向层叠，并且大致平行于与介质相对表面相交的记录磁极的侧表面。

10. 发明申请

US20080268291A1 MAGNETIC DEVICE, MAGNETIC RECORDING HEAD, AND MAGNETIC RECORDING APPARATUS 有权
标题翻译：磁性装置，磁记录头和磁记录装置
公开(公告)号：US20080268291A1
公开(公告)日：2008-10-30
申请号：US12109760
申请日：2008-04-25
申请人： Junichi Akiyama , Kenichiro Yamada , Masayuki Takagishi , Hitoshi Iwasaki
发明人： Junichi Akiyama , Kenichiro Yamada , Masayuki Takagishi , Hitoshi Iwasaki
IPC分类号： G11B5/127
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B2005/0002 , G11B2005/0024 , Y10T428/115
摘要： A magnetic device includes a first magnetic layer having at least one magnetic material layer, a second magnetic layer having at least one magnetic material layer, a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer, a third magnetic layer including a ferromagnetic material with a fixed magnetization direction, and a pair of electrodes. The pair of electrodes are operable to pass a current through a laminated body including the first and second magnetic layers, the nonmagnetic layer, and the third magnetic layer.
摘要翻译：磁性装置包括具有至少一个磁性材料层的第一磁性层，具有至少一个磁性材料层的第二磁性层，设置在第一磁性层和第二磁性层之间的第一非磁性层，第三磁性层，具有固定磁化方向的铁磁材料和一对电极。一对电极可操作以使电流通过包括第一和第二磁性层，非磁性层和第三磁性层的层叠体。

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