公开(公告)号：US20080253027A1

公开(公告)日：2008-10-16

申请号：US11733469

申请日：2007-04-10

申请人： Atsushi Yamaguchi ,  Kiyoshi Noguchi ,  Shingo Miyata ,  Masashi Sano

发明人： Atsushi Yamaguchi ,  Kiyoshi Noguchi ,  Shingo Miyata ,  Masashi Sano

IPC分类号： G11B5/60 ,  G11B5/127 ,  G11B5/187

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3133 ,  G11B5/3163

摘要： The present invention relates to a perpendicular recording magnetic head. A perpendicular recording element includes a main magnetic pole film for emitting a perpendicular magnetic field and is supported by a slider. The main magnetic pole film includes an electrode film and a plated film, the electrode film is an alloy film of at least one element selected from the platinum group and Ni, and the plated film is a magnetic film grown on the electrode film.

摘要翻译： 本发明涉及一种垂直记录磁头。 垂直记录元件包括用于发射垂直磁场并由滑块支撑的主磁极膜。 主磁极膜包括电极膜和电镀膜，电极膜是选自铂族和Ni中的至少一种元素的合金膜，电镀膜是在电极膜上生长的磁性膜。

公开(公告)号：US06773515B2

公开(公告)日：2004-08-10

申请号：US10050644

申请日：2002-01-16

申请人： Min Li ,  Simon H. Liao ,  Masashi Sano ,  Kiyoshi Noguchi ,  Kochan Ju ,  Cheng T. Horng

发明人： Min Li ,  Simon H. Liao ,  Masashi Sano ,  Kiyoshi Noguchi ,  Kochan Ju ,  Cheng T. Horng

IPC分类号： C23C800

CPC分类号： C22C38/10 ,  B32B15/01 ,  B82Y10/00 ,  B82Y25/00 ,  B82Y40/00 ,  C22C38/12 ,  G01R33/093 ,  G11B5/3163 ,  G11B5/3903 ,  H01F10/3259 ,  H01F10/3272 ,  H01F41/302 ,  H01L43/08 ,  H01L43/12 ,  Y10T29/49034 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A method for forming an NiCr seed layer based bottom spin valve sensor element having a synthetic antiferromagnet pinned (SyAP) layer and a capping layer comprising either a single specularly reflecting nano-oxide layer (NOL) or a bi-layer comprising a non-metallic layer and a specularly reflecting nano-oxide layer and the sensor element so formed. The method of producing these sensor elements provides elements having higher GMR ratios and lower resistances than elements of the prior art.

摘要翻译： 一种用于形成具有合成反铁磁钉扎（SyAP）层的NiCr种子层底部自旋阀传感器元件的方法和包括单个镜面反射纳米氧化物层（NOL）或包含非金属的双层的双层的覆盖层 层和镜面反射纳米氧化物层和如此形成的传感器元件。 制造这些传感器元件的方法提供了具有比现有技术的元件更高的GMR比和较低电阻的元件。

公开(公告)号：US06581272B1

公开(公告)日：2003-06-24

申请号：US10037812

申请日：2002-01-04

申请人： Min Li ,  Simon H. Liao ,  Masashi Sano ,  Kiyoshi Noguchi ,  Kochan Ju ,  Cheng T. Horng

发明人： Min Li ,  Simon H. Liao ,  Masashi Sano ,  Kiyoshi Noguchi ,  Kochan Ju ,  Cheng T. Horng

IPC分类号： G11B5127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  Y10T29/49034 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A method for forming a bottom spin valve sensor having a synthetic antiferromagnetic pinned (SyAP) layer, antiferromagnetically coupled to a pinning layer, in which one of the layers of the SyAP is formed as a three layer lamination that contains a specularly reflecting oxide layer of FeTaO. The sensor formed according to this method has an extremely high GMR ratio and exhibits good pinning strength.

摘要翻译： 一种用于形成底部自旋阀传感器的方法，该底部自旋阀传感器具有反结合磁耦合到钉扎层的合成反铁磁钉扎（SyAP）层，其中SyAP的一个层形成为三层层压，其包含镜面反射氧化物层 FeTaO。 根据该方法形成的传感器具有非常高的GMR比，并且具有良好的钉扎强度。

公开(公告)号：US5862022A

公开(公告)日：1999-01-19

申请号：US933347

申请日：1997-09-19

申请人： Kiyoshi Noguchi ,  Taro Oike ,  Satoru Araki ,  Manabu Ohta ,  Masashi Sano

发明人： Kiyoshi Noguchi ,  Taro Oike ,  Satoru Araki ,  Manabu Ohta ,  Masashi Sano

IPC分类号： G11B5/39 ,  H01L43/08 ,  G11C11/00 ,  H01L41/12

CPC分类号： G11B5/3967 ,  H01L43/08

摘要： This invention is directed to a ferromagnetic tunnel junction, an MR element and a magnetic head. A ferromagnetic tunnel junction is constituted by sequentially laminating a first ferromagnetic film, an insulating film and a second ferromagnetic film. These are laminated on an appropriate insulating substrate. The present invention is characterized in that the barrier potential of the insulating film is set within a range of 0.5 to 3 eV. A ferromagnetic tunnel junction with which a high MR ratio can be achieved with good reproduction characteristics is provided.

摘要翻译： 本发明涉及铁磁隧道结，MR元件和磁头。 铁磁隧道结由顺序层叠第一铁磁膜，绝缘膜和第二铁磁膜构成。 这些层压在适当的绝缘基板上。 本发明的特征在于，绝缘膜的阻挡电位设定在0.5〜3eV的范围内。 提供了具有良好再生特性可实现高MR比的铁磁隧道结。

公开(公告)号：US4758471A

公开(公告)日：1988-07-19

申请号：US877866

申请日：1986-06-24

申请人： Hiroyuki Arioka ,  Koji Kobayashi ,  Kiyoshi Noguchi

发明人： Hiroyuki Arioka ,  Koji Kobayashi ,  Kiyoshi Noguchi

IPC分类号： G11B5/66 ,  G11B5/64 ,  G11B5/72 ,  G11B5/725 ,  G11B5/73 ,  G11B5/702

CPC分类号： G11B5/725 ,  G11B5/722 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/31935

摘要： A magnetic recording medium exhibiting improved running stability and durability is obtained by covering a magnetic layer of ferromagnetic metal thin film with a topcoat layer comprising at least one fatty acid ester having a melting point of from -20.degree. C. to 30.degree. C. and at least one compound containing a group having a radiation sensitive unsaturated double bond and a group having a fluorine substituted alkyl group.

摘要翻译： 通过用包含至少一种熔点为-20℃至30℃的脂肪酸酯的顶涂层覆盖强磁性金属薄膜的磁性层，获得表现出改善的运行稳定性和耐久性的磁记录介质，以及 至少一种含有具有辐射敏感性不饱和双键的基团和具有氟取代的烷基的基团的化合物。

公开(公告)号：US4548871A

公开(公告)日：1985-10-22

申请号：US562002

申请日：1983-12-16

申请人： Kouji Kobayashi ,  Kiyoshi Noguchi ,  Suguru Takayama

发明人： Kouji Kobayashi ,  Kiyoshi Noguchi ,  Suguru Takayama

IPC分类号： C23C14/22 ,  G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/716

CPC分类号： C23C14/226 ,  G11B5/64 ,  G11B5/66 ,  G11B5/716 ,  Y10S428/928 ,  Y10T428/1234 ,  Y10T428/12465 ,  Y10T428/12646 ,  Y10T428/1266 ,  Y10T428/12861 ,  Y10T428/12931

摘要： A magnetic recording medium which comprises a magnetic layer formed on a substrate and comprising Co, or Co and one to three elements selected from the group consisting of Ni, Cr and O, said magnetic layer comprising sequentially from the substrate side, a first portion composed of crystal particles which are not inclined relative to the normal line of the principal plane of the substrate, a second portion composed of columnar crystal particles which are inclined relative to the normal line of the principal plane of the substrate, and a third portion composed of crystal particles which are not inclined relative to the normal line of the principal plane of the substrate.

摘要翻译： 一种磁记录介质，包括形成在基底上的包含Co或Co的磁性层和从Ni，Cr和O组成的组中选择的一种至三种元素的磁性层，所述磁性层从衬底侧依次包括第一部分 相对于基板的主面的法线不倾斜的晶体粒子，由相对于基板的主面的法线倾斜的柱状结晶粒子构成的第二部分，以及由 不相对于基板的主面的法线倾斜的结晶粒子。

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。

公开(公告)号：US08174937B2

公开(公告)日：2012-05-08

申请号：US12550662

申请日：2009-08-31

申请人： Hiroshi Ikeda ,  Kiyoshi Noguchi ,  Saori Kajihara ,  Isamu Sato

发明人： Hiroshi Ikeda ,  Kiyoshi Noguchi ,  Saori Kajihara ,  Isamu Sato

IPC分类号： G11B11/00

CPC分类号： G11B5/1278 ,  G11B2005/001 ,  G11B2005/0024

摘要： A thin-film magnetic head having microwave magnetic exciting function includes a write magnetic field production means for producing, in response to a write signal, a write magnetic field to be applied into a magnetic recording medium, and at least line conductor of a microwave radiator of a plane-structure type, formed independent from the write magnetic field production means, for radiating, by feeding there through a microwave excitation current, a microwave band resonance magnetic field with a frequency equal to or in a range near a ferromagnetic resonance frequency FR of the magnetic recording medium.

摘要翻译： 具有微波磁激励功能的薄膜磁头包括写入磁场产生装置，用于响应于写入信号产生要施加到磁记录介质中的写入磁场，以及至少微波辐射器的线路导体 的平面结构型，与写入磁场产生装置无关，用于通过微波激励电流向其馈送具有等于或接近铁磁共振频率FR的频率的微波频带共振磁场 的磁记录介质。

公开(公告)号：US20110255197A1

公开(公告)日：2011-10-20

申请号：US12763577

申请日：2010-04-20

申请人： Yoshihiro TSUCHIYA ,  Kiyoshi Noguchi ,  Migaku Takahashi ,  Masakiyo Tsunoda

发明人： Yoshihiro TSUCHIYA ,  Kiyoshi Noguchi ,  Migaku Takahashi ,  Masakiyo Tsunoda

IPC分类号： G11B5/127 ,  G11B5/48 ,  H02N99/00

CPC分类号： G11B5/6005 ,  G11B5/314 ,  G11B2005/0024

摘要： A microwave oscillation element of the present invention includes a lamination main part in which an oscillating layer that is a magnetization free layer and that generates a high frequency electromagnetic field by an excitation of a spin wave, a nonmagnetic intermediate layer, a polarizer layer, and a reference layer that is to be a base magnetic layer of a spin transfer due to application of current are layered in this order. The oscillating layer is made of CoIr, the polarizer layer is configured of CoCr or CoRu; and the nonmagnetic intermediate layer is configured of Cr or Ru. As a result, the efficiency of the spin injection is improved and the microwave oscillation element where the oscillation efficiency is excellent can be realized.

摘要翻译： 本发明的微波振荡元件包括层叠主体部，其中，作为磁化自由层的振动层，通过自旋波的激发产生高频电磁场，非磁性中间层，偏振片层和 将由于施加电流而成为自旋转移的基础磁性层的参考层按此顺序分层。 振荡层由CoIr制成，偏振层由CoCr或CoRu构成; 非磁性中间层由Cr或Ru构成。 结果，提高了自旋注入的效率，并且可以实现振荡效率优异的微波振荡元件。

公开(公告)号：US08031426B2

公开(公告)日：2011-10-04

申请号：US12700278

申请日：2010-02-04

申请人： Hiroshi Ikeda ,  Sayaka Hattori ,  Kiyoshi Noguchi

发明人： Hiroshi Ikeda ,  Sayaka Hattori ,  Kiyoshi Noguchi

IPC分类号： G11B5/02 ,  G11B5/127

CPC分类号： G11B5/314 ,  G11B2005/001 ,  G11B2005/0024

摘要： A thin-film magnetic head having microwave magnetic exciting function, includes a write magnetic field production unit for producing, in response to a write signal, a write magnetic field to be applied into a magnetic recording medium, a line conductor of a microwave radiator of a plane-structure type, formed independent from the write magnetic field production means, for radiating, by feeding there through a microwave excitation current, a microwave band resonance magnetic field with a frequency equal to or in a range near a ferromagnetic resonance frequency FR of the magnetic recording medium, and two conductors separated from the line conductor in a direction perpendicular to a track-width direction of the thin-film magnetic head and parallel to an ABS of the thin-film magnetic head. The microwave radiator is an inverted micro strip waveguide having the line conductor and a ground conductor constituted by the magnetic recording medium. A section of the line conductor, perpendicular to the track-width direction has a rectangular shape. An aspect ratio B/A is within a region from 0.15 to 1.2 or within a region of 7 or more, where A is a length in a lateral direction of the line conductor, which is in parallel with the ABS and perpendicular to the track-width direction, and B is a length in a longitudinal direction of the line conductor, which is perpendicular to the air bearing surface.

摘要翻译： 一种具有微波磁激励功能的薄膜磁头，包括写入磁场产生单元，用于响应于写入信号，产生要施加到磁记录介质中的写入磁场，微波辐射器的线路导体 平面结构类型，独立于写入磁场产生装置形成，用于通过微波激励电流向其馈送频率等于或接近铁磁谐振频率FR的频率的微波频带共振磁场 磁记录介质和两条导体，它们在垂直于薄膜磁头的磁道宽度方向的方向上与线路导体分离，并平行于薄膜磁头的ABS。 微波辐射器是具有线路导体和由磁记录介质构成的接地导体的倒置微带波导。 垂直于轨道宽度方向的线路导体的一部分具有矩形形状。 纵横比B / A在0.15至1.2的范围内或在7或更大的区域内，其中A是线路导体的横向方向上的长度，其与ABS平行并垂直于轨道 - 宽度方向，B是与空气轴承面垂直的线状导体的长度方向的长度。