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1. 发明申请

US20080151436A1 Magnetic recording method using ferromagnetic resonance and thin-film magnetic head for using the method 有权
标题翻译：使用铁磁共振和薄膜磁头的磁记录方法
公开(公告)号：US20080151436A1
公开(公告)日：2008-06-26
申请号：US11907095
申请日：2007-10-09
申请人： Isamu Sato , Tetsuya Roppongi , Yuichi Watabe , Norikazu Ota , Hiroshi Ikeda , Mikio Matsuzaki
发明人： Isamu Sato , Tetsuya Roppongi , Yuichi Watabe , Norikazu Ota , Hiroshi Ikeda , Mikio Matsuzaki
IPC分类号： G11B5/33
CPC分类号： G11B5/3123 , B82Y10/00 , G11B5/1278 , G11B5/743 , G11B2005/0005
摘要： Provided is a thin-film magnetic head capable of writing data with high accuracy on a magnetic recording medium having high coercive force without heating. The head comprises an electromagnetic coil element comprising: a main magnetic pole; an auxiliary magnetic pole; and a write coil formed so as to pass through at least between the main magnetic pole and the auxiliary magnetic pole, for generating the write magnetic field. In this head, a part of the write coil has a layered structure of: a resonance coil layer for generating a resonance magnetic field having ferromagnetic resonance frequency of a magnetic recording layer of a magnetic recording medium or having a frequency in the vicinity thereof; and a write coil layer. And further, the resonance coil layer and the write coil layer sandwich an insulating layer therebetween.
摘要翻译：提供了一种能够在没有加热的情况下在具有高矫顽力的磁记录介质上高精度地写入数据的薄膜磁头。头部包括电磁线圈元件，包括：主磁极; 辅助磁极; 以及形成为至少在主磁极和辅助磁极之间通过的用于产生写入磁场的写入线圈。在该磁头中，写入线圈的一部分具有以下结构：谐振线圈层，用于产生具有磁记录介质的磁记录层的铁磁共振频率或其附近频率的共振磁场; 和写入线圈层。此外，共振线圈层和写入线圈层之间夹有绝缘层。

2. 发明授权

US07920357B2 Magnetic recording method using ferromagnetic resonance and thin-film magnetic head for using the method 有权
标题翻译：使用铁磁共振和薄膜磁头的磁记录方法
公开(公告)号：US07920357B2
公开(公告)日：2011-04-05
申请号：US11907095
申请日：2007-10-09
申请人： Isamu Sato , Tetsuya Roppongi , Yuichi Watabe , Norikazu Ota , Hiroshi Ikeda , Mikio Matsuzaki
发明人： Isamu Sato , Tetsuya Roppongi , Yuichi Watabe , Norikazu Ota , Hiroshi Ikeda , Mikio Matsuzaki
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , B82Y10/00 , G11B5/1278 , G11B5/743 , G11B2005/0005
摘要： Provided is a thin-film magnetic head capable of writing data with high accuracy on a magnetic recording medium having high coercive force without heating. The head comprises an electromagnetic coil element comprising: a main magnetic pole; an auxiliary magnetic pole; and a write coil formed so as to pass through at least between the main magnetic pole and the auxiliary magnetic pole, for generating the write magnetic field. In this head, a part of the write coil has a layered structure of: a resonance coil layer for generating a resonance magnetic field having ferromagnetic resonance frequency of a magnetic recording layer of a magnetic recording medium or having a frequency in the vicinity thereof; and a write coil layer. And further, the resonance coil layer and the write coil layer sandwich an insulating layer therebetween.
摘要翻译：提供了一种能够在没有加热的情况下在具有高矫顽力的磁记录介质上高精度地写入数据的薄膜磁头。头部包括电磁线圈元件，包括：主磁极; 辅助磁极; 以及形成为至少在主磁极和辅助磁极之间通过的用于产生写入磁场的写入线圈。在该磁头中，写入线圈的一部分具有以下结构：谐振线圈层，用于产生具有磁记录介质的磁记录层的铁磁共振频率或其附近频率的共振磁场; 和写入线圈层。此外，共振线圈层和写入线圈层之间夹有绝缘层。

3. 发明授权

US08094399B2 Magnetic recording apparatus provided with microwave-assisted head 有权
标题翻译：带有微波辅助头的磁记录装置
公开(公告)号：US08094399B2
公开(公告)日：2012-01-10
申请号：US12721034
申请日：2010-03-10
申请人： Tetsuya Roppongi , Takuya Adachi , Isamu Sato , Hiroshi Ikeda , Mikio Matsuzaki
发明人： Tetsuya Roppongi , Takuya Adachi , Isamu Sato , Hiroshi Ikeda , Mikio Matsuzaki
IPC分类号： G11B5/02
CPC分类号： G11B5/1278 , G11B2005/001 , G11B2005/0024
摘要： A magnetic recording apparatus includes a magnetic recording medium having a magnetic recording layer, a thin-film magnetic head with a microwave-band magnetic drive function, the head having a write field generation means that generates a write field to the magnetic recording medium in response to a write signal, and a microwave generator that is provided independent of the write field generation means and generates an alternating magnetic field in plane having a microwave-band frequency when microwave-excitation current is fed, an excitation current generation means that generates the microwave-excitation current by amplitude-modulating microwave carrier current with a modulating signal having a fixed period, and a write signal supply means that generates the write signal and applies it to the write field generation means of the thin-film magnetic head.
摘要翻译：磁记录装置包括具有磁记录层的磁记录介质，具有微波带磁驱动功能的薄膜磁头，该磁头具有写磁场产生装置，以响应于该磁场记录介质产生写磁场写入信号，和独立于写入场产生装置提供的微波发生器，并且当馈送微波激励电流时产生具有微波频带频率的平面中的交变磁场;产生微波的激励电流产生装置 - 具有固定周期的调制信号的幅度调制微波载波电流的激励电流;以及产生写入信号并将其施加到薄膜磁头的写入场发生装置的写入信号提供装置。

4. 发明申请

US20110248710A1 APPARATUS FOR MEASURING MAGNETIC FIELD OF MICROWAVE-ASSISTED HEAD 有权
标题翻译：用于测量微波辅助磁头的磁场的装置
公开(公告)号：US20110248710A1
公开(公告)日：2011-10-13
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频带宽度为±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。

5. 发明申请

US20110222185A1 Magnetic Recording Apparatus Provided with Microwave-Assisted Head 有权
标题翻译：配有微波辅助头的磁记录装置
公开(公告)号：US20110222185A1
公开(公告)日：2011-09-15
申请号：US12721034
申请日：2010-03-10
申请人： Tetsuya Roppongi , Takuya Adachi , Isamu Sato , Hiroshi Ikeda , Mikio Matsuzaki
发明人： Tetsuya Roppongi , Takuya Adachi , Isamu Sato , Hiroshi Ikeda , Mikio Matsuzaki
IPC分类号： G11B5/02
CPC分类号： G11B5/1278 , G11B2005/001 , G11B2005/0024
摘要： A magnetic recording apparatus includes a magnetic recording medium having a magnetic recording layer, a thin-film magnetic head with a microwave-band magnetic drive function, the head having a write field generation means that generates a write field to the magnetic recording medium in response to a write signal, and a microwave generator that is provided independent of the write field generation means and generates an alternating magnetic field in plane having a microwave-band frequency when microwave-excitation current is fed, an excitation current generation means that generates the microwave-excitation current by amplitude-modulating microwave carrier current with a modulating signal having a fixed period, and a write signal supply means that generates the write signal and applies it to the write field generation means of the thin-film magnetic head.
摘要翻译：磁记录装置包括具有磁记录层的磁记录介质，具有微波带磁驱动功能的薄膜磁头，该磁头具有写磁场产生装置，以响应于该磁场记录介质产生写磁场写入信号，和独立于写入场产生装置提供的微波发生器，并且当馈送微波激励电流时产生具有微波频带频率的平面中的交变磁场;产生微波的激励电流产生装置 - 具有固定周期的调制信号的幅度调制微波载波电流的激励电流;以及产生写入信号并将其施加到薄膜磁头的写入场发生装置的写入信号提供装置。

6. 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。

7. 发明申请

US20080180858A1 Perpendicular magnetic write head and method of manufacturing perpendicular magnetic write head, and magnetic write device 有权
标题翻译：垂直写磁头及垂直写磁头制造方法及磁写装置
公开(公告)号：US20080180858A1
公开(公告)日：2008-07-31
申请号：US12010160
申请日：2008-01-22
申请人： Norikazu Ota , Tetsuya Roppongi , Yuichi Watabe
发明人： Norikazu Ota , Tetsuya Roppongi , Yuichi Watabe
IPC分类号： G11B5/33
CPC分类号： G11B5/3116 , G11B5/112 , G11B5/1278 , G11B5/3163 , G11B5/3967
摘要： Provided are a perpendicular magnetic write head capable of achieving the high performance and stability in the writing performance, and a method of manufacturing the same. On a trailing side of a main magnetic pole layer, disposed are a gap layer extending backward from an air bearing surface and an auxiliary magnetic pole layer extending backward from a position recessed from the air bearing surface. The auxiliary magnetic pole layer is partially overlapped on the gap layer. In case the auxiliary magnetic pole layer is formed using etching method in the process of manufacturing the perpendicular magnetic write head, the gap layer has a function as an etching stopper layer so that the main magnetic pole layer is protected; thereby the already-formed main magnetic pole layer is not subjected to etching.
摘要翻译：提供能够实现写入性能的高性能和稳定性的垂直磁性写入头及其制造方法。在主磁极层的后侧设置有从空气轴承表面向后延伸的间隙层和从空气轴承表面凹陷的位置向后延伸的辅助磁极层。辅助磁极层部分地重叠在间隙层上。在制造垂直写磁头的过程中，使用蚀刻方法形成辅助磁极层的情况下，间隙层具有作为蚀刻停止层的功能，从而保护主磁极层; 因此已经形成的主磁极层不进行蚀刻。

8. 发明授权

US07154707B2 Thin film magnetic head and magnetic recording apparatus 有权
标题翻译：薄膜磁头和磁记录装置
公开(公告)号：US07154707B2
公开(公告)日：2006-12-26
申请号：US10805408
申请日：2004-03-22
申请人： Yuichi Watabe , Norikazu Ota , Yasuyuki Notsuke , Susumu Aoki , Tetsuya Roppongi , Naoto Matono
发明人： Yuichi Watabe , Norikazu Ota , Yasuyuki Notsuke , Susumu Aoki , Tetsuya Roppongi , Naoto Matono
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/313 , G11B5/3967
摘要： Provided is a thin film magnetic head capable of securing recording characteristics even in the case where a return pole layer is disposed on a medium-outgoing side of the pole layer. The return yoke layer is disposed on a trailing side of the pole layer, and a neck height NH is within a range of NH≦W1 (a width of a front end portion in a main pole layer)+0.05 μm, and a height ratio (a ratio of the neck height NH to a throat height TH) NH/TH is within a range of 0.5
摘要翻译：提供了即使在极性层的介质输出侧设置返回极层的情况下也能够确保记录特性的薄膜磁头。返回轭层设置在极层的后侧，颈部高度NH在NH <= W 1（主极层的前端部的宽度）+0.05μm的范围内，并且高度比（颈部高度NH与喉部高度TH的比）NH / TH在0.5

9. 发明授权

US07843667B2 Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device 有权
标题翻译：薄膜磁头，头万向架组件，头臂组件和磁盘装置
公开(公告)号：US07843667B2
公开(公告)日：2010-11-30
申请号：US11802219
申请日：2007-05-21
申请人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
发明人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
IPC分类号： G11B5/39 , G11B5/127
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/3912 , G11B5/3967 , G11B5/6064
摘要： Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
摘要翻译：提供一种薄膜磁头，其能够抑制磁道擦除的发生，减少由由薄膜线圈产生的磁通引起的对磁阻元件的影响，并进一步降低寄生电容。薄膜磁头沿堆叠方向依次具有第一磁屏蔽层，磁阻元件，第二磁屏蔽层，第三磁屏蔽层，主磁极层和返回磁轭层。第一和第二磁屏蔽层中的至少一个的轨道宽度方向上的宽度小于第三磁屏蔽层和返回磁轭层的磁道宽度方向上的宽度。

10. 发明授权

US07974046B2 Thin-film magnetic head with heating portion and protrusion adjustment portion, head gimbal assembly equipped head, magnetic recording/reproducing apparatus equipped HGA, and manufacturing method of head 有权
标题翻译：具有加热部分和凸起调节部分的薄膜磁头，头部万向头组件头，装备有HGA的磁记录/再现装置，以及头部的制造方法
公开(公告)号：US07974046B2
公开(公告)日：2011-07-05
申请号：US11873666
申请日：2007-10-17
申请人： Norikazu Ota , Tetsuya Roppongi , Hiraku Hirabayashi , Yuichi Watabe
发明人： Norikazu Ota , Tetsuya Roppongi , Hiraku Hirabayashi , Yuichi Watabe
IPC分类号： G11B5/56
CPC分类号： G11B5/3136 , G11B5/102 , G11B5/1278 , G11B5/314 , G11B5/3169 , G11B5/3173 , G11B5/3967 , G11B5/6064
摘要： The present invention provides a thin-film magnetic head which surely improves the writing and reading characteristic with reducing the flying height and surely handles the contact or collision with the magnetic recording medium.A thin-film magnetic head is provided, which includes, an substrate with ABS; a read or write head element provided on an element-formed surface of the substrate; at least one protrusion adjustment portion whose end reaches a slider end surface on the ABS side, which provides on an element-formed surface of the substrate; at least one heating portion provided rear at least one protrusion adjustment portion viewed from the slider end surface on the ABS side.
摘要翻译：本发明提供了一种薄膜磁头，其可以在降低飞行高度的同时确保提高写入和读取特性，并且可靠地处理与磁记录介质的接触或碰撞。提供了一种薄膜磁头，其包括具有ABS的基板; 设置在所述基板的元件形成表面上的读或写头元件; 至少一个突起调节部分，其端部到达ABS侧的滑块端面，其提供在所述基板的元件形成表面上; 至少一个加热部分，设置在从ABS侧的滑块端面观察的至少一个突起调节部的后方。

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