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1. 发明授权

US08264916B1 Microwave assisted magnetic head and magnetic disk device 有权
标题翻译：微波辅助磁头和磁盘装置
公开(公告)号：US08264916B1
公开(公告)日：2012-09-11
申请号：US13045603
申请日：2011-03-11
申请人： Tsutomu Aoyama , Tetsuya Roppongi , Yoshikazu Soeno , Kiyoshi Noguchi , Isamu Sato
发明人： Tsutomu Aoyama , Tetsuya Roppongi , Yoshikazu Soeno , Kiyoshi Noguchi , Isamu Sato
IPC分类号： G11B11/00 , G11B27/36
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A microwave assisted magnetic head of the present invention includes: at least two or more auxiliary coils that are arranged in a periphery of a writing main pole; and microwave current supply means that applies microwave currents to the at least two or more auxiliary coils. The at least two or more auxiliary coils respectively include linear body parts linearly arranged on an ABS side, two of the linear body parts of the at least two or more auxiliary coils are arranged in a substantially orthogonal positional relationship, and the microwave current supply means is configured such that the microwave current supply means changes phase differences of the microwave currents applied respectively to the at least two or more auxiliary coils. Therefore, the microwave current can be easily controlled, and thus, a circularly polarized magnetic field with high magnetization inversion efficiency can be generated as an assistance magnetic field.
摘要翻译：本发明的微波辅助磁头包括：布置在书写主极的周边中的至少两个或更多个辅助线圈; 以及微波电流供给装置，其向所述至少两个或更多个辅助线圈施加微波电流。所述至少两个以上的辅助线圈分别包括直线状配置在ABS侧的线状体部，所述至少两个以上的辅助线圈的线状体部的两个以大致正交的位置关系配置，微波电流供给装置被配置为使得微波电流提供装置改变分别施加到至少两个或更多个辅助线圈的微波电流的相位差。因此，可以容易地控制微波电流，因此可以产生具有高磁化反转效率的圆极化磁场作为辅助磁场。

2. 发明申请

US20120230167A1 MICROWAVE ASSISTED MAGNETIC HEAD AND MAGNETIC DISK DEVICE 有权
标题翻译： MICROWAVE辅助磁头和磁性磁盘设备
公开(公告)号：US20120230167A1
公开(公告)日：2012-09-13
申请号：US13045603
申请日：2011-03-11
申请人： Tsutomu AOYAMA , Tetsuya Roppongi , Yoshikazu Soeno , Kiyoshi Noguchi , Isamu Sato
发明人： Tsutomu AOYAMA , Tetsuya Roppongi , Yoshikazu Soeno , Kiyoshi Noguchi , Isamu Sato
IPC分类号： G11B13/04
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A microwave assisted magnetic head of the present invention includes: at least two or more auxiliary coils that are arranged in a periphery of a writing main pole; and microwave current supply means that applies microwave currents to the at least two or more auxiliary coils. The at least two or more auxiliary coils respectively include linear body parts linearly arranged on an ABS side, two of the linear body parts of the at least two or more auxiliary coils are arranged in a substantially orthogonal positional relationship, and the microwave current supply means is configured such that the microwave current supply means changes phase differences of the microwave currents applied respectively to the at least two or more auxiliary coils. Therefore, the microwave current can be easily controlled, and thus, a circularly polarized magnetic field with high magnetization inversion efficiency can be generated as an assistance magnetic field.
摘要翻译：本发明的微波辅助磁头包括：布置在书写主极的周边中的至少两个或更多个辅助线圈; 以及微波电流供给装置，其向所述至少两个或更多个辅助线圈施加微波电流。所述至少两个以上的辅助线圈分别包括直线状配置在ABS侧的线状体部，所述至少两个以上的辅助线圈的线状体部的两个以大致正交的位置关系配置，微波电流供给装置被配置为使得微波电流提供装置改变分别施加到至少两个或更多个辅助线圈的微波电流的相位差。因此，可以容易地控制微波电流，因此可以产生具有高磁化反转效率的圆极化磁场作为辅助磁场。

3. 发明申请

US20070253106A1 Magnetic head apparatus and magnetic recording and reproducing apparatus 有权
标题翻译：磁头装置和磁记录和再现装置
公开(公告)号：US20070253106A1
公开(公告)日：2007-11-01
申请号：US11790643
申请日：2007-04-26
申请人： Isamu Sato , Yoshikazu Soeno , Koichi Terunuma , Tetsuya Roppongi , Hiroshi Ikeda
发明人： Isamu Sato , Yoshikazu Soeno , Koichi Terunuma , Tetsuya Roppongi , Hiroshi Ikeda
IPC分类号： G11B5/147 , G11B5/17
CPC分类号： G11B5/1278 , G11B5/02 , G11B5/17 , G11B5/3123 , G11B5/65 , G11B2005/0005 , G11B2005/0029
摘要： A magnetic head apparatus is provided which is capable of recording data in a recoding layer having high coercive force with high accuracy without heating. A magnetic recording and reproducing apparatus is also provided which has the magnetic head apparatus. A recording head has: a main magnetic pole; a recording-side front-end shield (a return magnetic pole); a recording-side rear-end shield (a return magnetic pole); a main coil for generating a perpendicular recording magnetic field at the main magnetic pole; and an auxiliary coil for generating a longitudinal alternating current magnetic field having a frequency in the microwave band at the main magnetic pole.
摘要翻译：提供一种能够在没有加热的情况下以高精度在高矫顽力的记录层中记录数据的磁头装置。还提供一种具有磁头装置的磁记录和重放装置。记录头具有：主磁极; 记录侧前端屏蔽（返回磁极）; 记录侧后端屏蔽（返回磁极）; 用于在主磁极处产生垂直记录磁场的主线圈; 以及用于产生在主磁极处具有微波频带的频率的纵向交流磁场的辅助线圈。

4. 发明授权

US07791838B2 Magnetic head apparatus and magnetic recording and reproducing apparatus 有权
标题翻译：磁头装置和磁记录和再现装置
公开(公告)号：US07791838B2
公开(公告)日：2010-09-07
申请号：US11790643
申请日：2007-04-26
申请人： Isamu Sato , Yoshikazu Soeno , Koichi Terunuma , Tetsuya Roppongi , Hiroshi Ikeda
发明人： Isamu Sato , Yoshikazu Soeno , Koichi Terunuma , Tetsuya Roppongi , Hiroshi Ikeda
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/02 , G11B5/17 , G11B5/3123 , G11B5/65 , G11B2005/0005 , G11B2005/0029
摘要： A magnetic head apparatus is provided which is capable of recording data in a recoding layer having high coercive force with high accuracy without heating. A magnetic recording and reproducing apparatus is also provided which has the magnetic head apparatus. A recording head has: a main magnetic pole; a recording-side front-end shield (a return magnetic pole); a recording-side rear-end shield (a return magnetic pole); a main coil for generating a perpendicular recording magnetic field at the main magnetic pole; and an auxiliary coil for generating a longitudinal alternating current magnetic field having a frequency in the microwave band at the main magnetic pole.
摘要翻译：提供一种能够在没有加热的情况下以高精度在高矫顽力的记录层中记录数据的磁头装置。还提供一种具有磁头装置的磁记录和重放装置。记录头具有：主磁极; 记录侧前端屏蔽（返回磁极）; 记录侧后端屏蔽（返回磁极）; 用于在主磁极处产生垂直记录磁场的主线圈; 以及用于产生在主磁极处具有微波频带的频率的纵向交流磁场的辅助线圈。

5. 发明申请

US20120320474A1 MICROWAVE ASSISTED MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING METHOD THEREWITH 有权
标题翻译： MICROWAVE辅助磁记录头和磁记录方法
公开(公告)号：US20120320474A1
公开(公告)日：2012-12-20
申请号：US13527735
申请日：2012-06-20
申请人： Yoshikazu Soeno , Kei Hirata , Tsutomu Aoyama , Isamu Sato
发明人： Yoshikazu Soeno , Kei Hirata , Tsutomu Aoyama , Isamu Sato
IPC分类号： G11B5/39 , G11B5/17
CPC分类号： G11B5/314 , G11B5/3967 , G11B2005/0024
摘要： A microwave assisted magnetic head includes a main magnetic pole; a trailing shield, a main coil for causing the main magnetic pole to generate a perpendicular recording field, at least one secondary coil for generating an in-plane alternate-current (AC) magnetic field with a frequency in a microwave band from a magnetic recording gap between the main magnetic pole and the trailing shield, nonmagnetic films formed on magnetic recording gap facing surfaces that are defined by the main magnetic pole and the trailing shield, the main magnetic pole and the trailing shield being configured with first soil magnetic films, and second soft magnetic films formed further on the surfaces of the nonmagnetic films. The second soft magnetic films have larger anisotropy fields than the first soft magnetic films have.
摘要翻译：微波辅助磁头包括主磁极; 后屏蔽，用于使主磁极产生垂直记录场的主线圈，至少一个次级线圈，用于产生来自磁记录的微波频带中的频率的平面内交流（AC）磁场主磁极和后屏蔽之间的间隙，由主磁极和后屏蔽限定的磁记录间隙面对表面上形成的非磁性膜，主磁极和后屏蔽构成第一土壤磁膜，以及第二软磁膜进一步形成在非磁性膜的表面上。第二软磁膜具有比第一软磁膜具有更大的各向异性场。

6. 发明授权

US08582239B2 Microwave assisted magnetic recording head and magnetic recording method therewith 有权
标题翻译：微波辅助磁记录头及其磁记录方法
公开(公告)号：US08582239B2
公开(公告)日：2013-11-12
申请号：US13527735
申请日：2012-06-20
申请人： Yoshikazu Soeno , Kei Hirata , Tsutomu Aoyama , Isamu Sato
发明人： Yoshikazu Soeno , Kei Hirata , Tsutomu Aoyama , Isamu Sato
IPC分类号： G11B5/31 , G11B5/02
CPC分类号： G11B5/314 , G11B5/3967 , G11B2005/0024
摘要： A microwave assisted magnetic head includes a main magnetic pole; a trailing shield, a main coil for causing the main magnetic pole to generate a perpendicular recording field, at least one secondary coil for generating an in-plane alternate-current (AC) magnetic field with a frequency in a microwave band from a magnetic recording gap between the main magnetic pole and the trailing shield, nonmagnetic films formed on magnetic recording gap facing surfaces that are defined by the main magnetic pole and the trailing shield, the main magnetic pole and the trailing shield being configured with first soft magnetic films, and second soft magnetic films formed further on the surfaces of the nonmagnetic films. The second soft magnetic films have larger anisotropy fields than the first soft magnetic films have.
摘要翻译：微波辅助磁头包括主磁极; 后屏蔽，用于使主磁极产生垂直记录场的主线圈，至少一个次级线圈，用于产生来自磁记录的微波频带中的频率的平面内交流（AC）磁场主磁极和后屏蔽之间的间隙，由主磁极和后屏蔽限定的磁记录间隙面对表面上形成的非磁性膜，主磁极和后屏蔽构成第一软磁膜，以及第二软磁膜进一步形成在非磁性膜的表面上。第二软磁膜具有比第一软磁膜具有更大的各向异性场。

7. 发明授权

US08358127B2 Apparatus for measuring magnetic field of microwave-assisted head 有权
标题翻译：用于测量微波辅助头磁场的装置
公开(公告)号：US08358127B2
公开(公告)日：2013-01-22
申请号：US12755803
申请日：2010-04-07
申请人： Isamu Sato , Hiroshi Ikeda , Mikio Matsuzaki , Tetsuya Roppongi , Noboru Yamanaka , Tsutomu Aoyama
发明人： Isamu Sato , Hiroshi Ikeda , Mikio Matsuzaki , Tetsuya Roppongi , Noboru Yamanaka , Tsutomu Aoyama
IPC分类号： G01R33/02
CPC分类号： G11B5/455 , G01R33/098 , G01R33/1284
摘要： A measuring circuit system in a magnetic field measuring apparatus of the invention has an amplifier and a band-pass filter connected in sequence on an output terminal side of the TMR element, the band-pass filter is a narrow-range band-pass filter such that a peak pass frequency of the filter that is a center is a basic frequency selected from a range of 10 to 40 GHz and a band width centered around the basic frequency is a narrow range of ±0.5 to ±4 GHz; and with the measuring circuit system, an SIN ratio (SNR) of 3 dB or greater is obtained, the SNR being defined by a ratio of an amplitude S of a high-frequency generated signal induced by the TMR element to a total noise N that is a sum of a head noise generated by the TMR element and a circuit noise generated by the amplifier. With such a configuration, an in-plane high-frequency magnetic field generated by a microwave-assisted magnetic head is reliably and precisely measured.
摘要翻译：本发明的磁场测量装置中的测量电路系统具有在TMR元件的输出端侧依次连接的放大器和带通滤波器，带通滤波器是窄范围带通滤波器，作为中心的滤波器的峰值通过频率是从10〜40GHz的范围选择的基本频率，以基本频率为中心的带宽为±0.5〜±4GHz的窄范围; 并且利用测量电路系统，获得3dB或更大的SIN比（SNR），SNR由TMR元件引起的高频产生信号的振幅S与总噪声N的比值定义，是由TMR元件产生的头噪声和由放大器产生的电路噪声的总和。通过这样的结构，可以可靠且精确地测量由微波辅助磁头产生的面内高频磁场。

8. 发明授权

US08300346B2 Microwave assisted magnetic head 有权
标题翻译：微波辅助磁头
公开(公告)号：US08300346B2
公开(公告)日：2012-10-30
申请号：US12750870
申请日：2010-03-31
申请人： Hiroshi Ikeda , Isamu Sato , Kiyoshi Noguchi , Tsutomu Aoyama , Takuya Adachi
发明人： Hiroshi Ikeda , Isamu Sato , Kiyoshi Noguchi , Tsutomu Aoyama , Takuya Adachi
IPC分类号： G11B5/02 , G11B5/127
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A gap between a main pole and auxiliary pole composing a thin film magnetic head having a microwave assisted function of the present invention is filled with a nonmagnetic dielectric layer to embed a microwave radiator. The nonmagnetic dielectric layer has an inclined surface at a end on a side of an opposing medium surface by which the microwave radiated from the microwave radiator to be bent toward the main pole, whereby the microwave magnetic field generated from the microwave generator can be gathered immediately below the main pole, further improving the microwave assisted effect.
摘要翻译：构成本发明的具有微波辅助功能的薄膜磁头的主极和辅助极之间的间隙填充有非磁性介电层以嵌入微波辐射器。非磁性介电层在相对的介质表面的一侧的端部具有倾斜表面，微波从微波辐射器辐射到微波辐射器，从而微波发生器产生的微波磁场可以立即收集主杆下方进一步提高微波辅助效果。

9. 发明申请

US20110242696A1 MICROWAVE ASSISTED MAGNETIC HEAD 有权
标题翻译： MICROWAVE辅助磁头
公开(公告)号：US20110242696A1
公开(公告)日：2011-10-06
申请号：US12750870
申请日：2010-03-31
申请人： Hiroshi IKEDA , Isamu Sato , Kiyoshi Noguchi , Tsutomu Aoyama , Takuya Adachi
发明人： Hiroshi IKEDA , Isamu Sato , Kiyoshi Noguchi , Tsutomu Aoyama , Takuya Adachi
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A gap between a main pole and auxiliary pole composing a thin film magnetic head having a microwave assisted function of the present invention is filled with a nonmagnetic dielectric layer to embed a microwave radiator. The nonmagnetic dielectric layer has an inclined surface at a end on a side of an opposing medium surface by which the microwave radiated from the microwave radiator to be bent toward the main pole, whereby the microwave magnetic field generated from the microwave generator can be gathered immediately below the main pole, further improving the microwave assisted effect.
摘要翻译：构成本发明的具有微波辅助功能的薄膜磁头的主极和辅助极之间的间隙填充有非磁性介电层以嵌入微波辐射器。非磁性介电层在相对的介质表面的一侧的端部具有倾斜表面，微波从微波辐射器辐射到微波辐射器，从而微波发生器产生的微波磁场可以立即收集主杆下方进一步提高微波辅助效果。

10. 发明授权

US06246552B1 Read/write head including displacement generating means that elongates and contracts by inverse piezoelectric effect of electrostrictive effect 有权
标题翻译：读/写头包括位移产生装置，其通过电致伸缩效应的反压电效应伸长和收缩
公开(公告)号：US06246552B1
公开(公告)日：2001-06-12
申请号：US09091363
申请日：1998-09-24
申请人： Yoshikazu Soeno , Shinji Ichikawa , Takamitsu Tsuna , Isamu Sato
发明人： Yoshikazu Soeno , Shinji Ichikawa , Takamitsu Tsuna , Isamu Sato
IPC分类号： G11B2110
CPC分类号： G11B5/59627 , G11B5/5552 , G11B5/58 , G11B7/0937 , G11B21/10 , G11B21/20
摘要： A read/write head includes a slider provided with an electromagnetic transducer element (or an optical module), an actuator, and a suspension. The actuator includes a fixed part, a movable part, and at least two beam members for coupling them together. The beam members have a displacement generating means that elongates and contracts by inverse piezoelectric effect or electrostrictive effect. The fixed part is fixed to the suspension, and the movable part is fixed to the slider. Upon the elongation and contraction of the displacement generator, the displacement generator deflects and the movable part displaces linearly, circularly or rotationally with respect to the fixed part, and the electromagnetic transducer element displaces in a linear or circular orbit, so that the electromagnetic transducer element intersects recording tracks. In the actuator, the fixed part, movable part and beam members are formed as an integrated single piece by providing a hole and/or a cutout in a sheet-like member constructed of a piezoelectric or electrostrictive material. The actuator of the structure illustrated is used for the positioning of a direction intersecting recording tracks. In this case, the total sum of voltages applied on the displacement generating means is controlled in such a manner that it is constant at any time, thereby controlling position fluctuations of the electromagnetic transducer element in the direction vertical to the recording medium surface.
摘要翻译：读/写头包括设置有电磁换能器元件（或光模块），致动器和悬架的滑块。致动器包括固定部分，可移动部分和用于将它们联接在一起的至少两个梁部件。梁构件具有通过反压电效应或电致伸缩效应伸长和收缩的位移产生装置。固定部固定在悬架上，可动部固定在滑块上。在位移发生器的伸长和收缩时，位移发生器偏转，并且可移动部分相对于固定部分线性，圆形或旋转地移位，并且电磁换能器元件以线性或圆形轨道移位，使得电磁换能器元件与录音轨相交。在致动器中，通过在由压电或电致伸缩材料构成的片状构件中设置孔和/或切口，将固定部件，可动部件和梁部件形成为一体的单件。所示结构的致动器用于定位与记录轨道相交的方向。在这种情况下，施加在位移产生装置上的电压的总和以任何时间的方式被控制，由此控制电磁换能器元件在垂直于记录介质表面的方向上的位置波动。

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