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71. 发明申请

US20090290267A1 Magnetic Recording and Reproducing Apparatus with Thin-Film Magnetic Head Having Microwave Magnetic Exciting Function 有权
标题翻译：具有微波磁激励功能的薄膜磁头的磁记录和再现装置
公开(公告)号：US20090290267A1
公开(公告)日：2009-11-26
申请号：US12470150
申请日：2009-05-21
申请人： Hiroshi Ikeda , Saori Kajihara , Kiyoshi Noguchi , Isamu Sato
发明人： Hiroshi Ikeda , Saori Kajihara , Kiyoshi Noguchi , Isamu Sato
IPC分类号： G11B5/33
CPC分类号： B82Y10/00 , B82Y25/00 , G11B5/3967 , G11B25/043 , G11B33/08 , G11B2005/001 , G11B2005/0024 , G11B2005/3996
摘要： A magnetic recording and reproducing apparatus with a thin-film magnetic head having microwave magnetic exciting function, includes a metal housing, a magnetic recording medium, arranged in the metal housing, having a magnetic recording layer, and a thin-film magnetic head, arranged in the metal housing, having a write magnetic field production unit and a resonance magnetic field production unit. The write magnetic field production unit produces, in response to a write signal, a write magnetic field to be applied into the magnetic recording layer, and the resonance magnetic field production unit produces, in response to a microwave excitation signal, a resonance magnetic field with a frequency equal to or in a range near a ferromagnetic resonance frequency FR of a the magnetic recording layer. The apparatus further includes a write signal generation unit, arranged in the metal housing, for generating the write signal, a microwave signal generation unit, arranged in the metal housing, for generating the microwave excitation signal, a transmission unit, arranged in the metal housing, for feeding the microwave excitation signal generated by the microwave signal generation unit to the resonance magnetic field production unit in the thin-film magnetic head and for feeding the write signal generated by the write signal generation unit to the write magnetic field production unit in the thin-film magnetic head, and a plurality of metal ribs, arranged in the metal housing, for forming a plurality of cavities, each of the plurality of cavities having a rectangular horizontal section shape and having dimensions to produce no resonance at a frequency of the microwave excitation signal.
摘要翻译：具有微波磁激励功能的薄膜磁头的磁记录和重放装置包括布置在具有磁记录层的金属外壳中的金属外壳，磁记录介质和薄膜磁头，在金属外壳中，具有写入磁场产生单元和共振磁场产生单元。写入磁场产生单元响应于写入信号产生要施加到磁记录层中的写入磁场，并且谐振磁场产生单元响应于微波激励信号产生具有等于或者在磁记录层的铁磁共振频率FR附近的范围内的频率。该装置还包括写入信号生成单元，布置在金属外壳中用于产生写入信号，布置在金属外壳中的用于产生微波激励信号的微波信号产生单元，布置在金属外壳中的传输单元，用于将由微波信号生成单元生成的微波激励信号馈送到薄膜磁头中的共振磁场产生单元，并将由写入信号生成单元生成的写信号馈送到写入磁场产生单元薄膜磁头和多个金属肋，布置在金属壳体中，用于形成多个空腔，多个空腔中的每一个具有矩形水平截面形状，并且具有尺寸以便在频率处不产生共振微波激励信号。

72. 发明授权

US07359146B2 Perpendicular magnetic recording element having stacked FM and AFM films applying magnetic bias along easy axis of soft magnetic film 有权
标题翻译：具有堆叠的FM和AFM膜的垂直磁记录元件沿着软磁膜的易轴施加磁偏置
公开(公告)号：US07359146B2
公开(公告)日：2008-04-15
申请号：US10891182
申请日：2004-07-15
申请人： Kei Hirata , Kiyoshi Noguchi , Tetsuya Mino , Tetsuya Roppongi
发明人： Kei Hirata , Kiyoshi Noguchi , Tetsuya Mino , Tetsuya Roppongi
IPC分类号： G11B5/127
CPC分类号： G11B5/127
摘要： The soft magnetic film takes its hard axis along the direction in which a magnetic field is generated and its easy axis along a direction perpendicular to the direction of the writer magnetic field. The magnetic bias film applies a magnetic bias along the easy axis to the soft magnetic film.
摘要翻译：软磁性膜沿其沿着写入磁场方向垂直的方向沿其产生磁场的方向和其容易的轴取其硬轴。磁偏置膜沿着容易的轴向磁性膜施加磁偏置。

73. 发明授权

US07321480B2 Thin-film magnetic head having magnetic layers of different thicknesses and fabrication method for same 失效
标题翻译：具有不同厚度的磁性层的薄膜磁头及其制造方法
公开(公告)号：US07321480B2
公开(公告)日：2008-01-22
申请号：US10917476
申请日：2004-08-13
申请人： Taro Oike , Kiyoshi Noguchi , Shin Narushima , Takamitsu Sakamoto , Hiraku Hirabayashi
发明人： Taro Oike , Kiyoshi Noguchi , Shin Narushima , Takamitsu Sakamoto , Hiraku Hirabayashi
IPC分类号： G11B5/39
CPC分类号： G11B5/3163 , G11B5/3116 , Y10T29/49021
摘要： A thin-film magnetic head includes a lower magnetic layer, an upper magnetic layer, a recording gap layer, and a thin-film coil. The lower magnetic layer has a first magnetic pole tip layer, and a first yoke layer which is connected to the first magnetic pole tip layer. The first yoke layer has an extended part which is relatively thick and a reduced part which is relatively thin in the area in which the first yoke layer confronts the first magnetic pole tip layer, the extended part being positioned on the side of the air bearing surface. Further, the first magnetic pole tip layer is connected to the first yoke layer at the extended part, and is insulated from the first yoke layer at the reduced part.
摘要翻译：薄膜磁头包括下磁性层，上磁性层，记录间隙层和薄膜线圈。下磁性层具有第一磁极尖端层和与第一磁极尖端层连接的第一磁轭层。第一磁轭层具有相对较厚的延伸部分和在第一磁轭层面对第一磁极末端层的区域中较薄的部分，延伸部分位于空气轴承表面侧。此外，第一磁极尖端层在延伸部分处连接到第一磁轭层，并且在缩小部分处与第一磁轭层绝缘。

74. 发明申请

US20060262457A1 Magnetic field sensor provided with an upper shield layer having portions with different magnetostriction 失效
公开(公告)号：US20060262457A1
公开(公告)日：2006-11-23
申请号：US11411107
申请日：2006-04-26
申请人： Kei Hirata , Takahiko Machita , Koji Shimazawa , Kiyoshi Noguchi
发明人： Kei Hirata , Takahiko Machita , Koji Shimazawa , Kiyoshi Noguchi
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/3912 , B82Y10/00 , G11B5/3909 , G11B5/3929 , G11B2005/3996
摘要： A magnetic field sensor comprises: a magnetic field detecting element that detects magnitude of an external magnetic field based on electric resistance of the magnetic field detecting element to sense current, the electric resistance being varied in accordance with the external magnetic field; an upper shield layer that is formed to cover the magnetic field detecting element; and a protective layer that is formed above the upper shield layer with respect to a direction of stacking. The upper shield layer includes a first portion at least part of which covers a top surface of the magnetic field detecting element, and a second portion that covers the first portion, and, the first portion has a larger absolute value of magnetostriction than the second portion.

75. 发明申请

US20050264934A1 Thin-film magnetic head, head gimbal assembly with thin-film magnetic head, head arm assembly with head gimbal assembly, magnetic disk drive apparatus with head gimbal assembly and manufacturing method of thin-film magnetic head 失效
标题翻译：薄膜磁头，具有薄膜磁头的头万向架组件，带头万向架组件的头臂组件，头万向架组件的磁盘驱动装置和薄膜磁头的制造方法
公开(公告)号：US20050264934A1
公开(公告)日：2005-12-01
申请号：US11139697
申请日：2005-05-31
申请人： Taro Oike , Hiraku Hirabayashi , Shin Narushima , Takamitsu Sakamoto , Kiyoshi Noguchi
发明人： Taro Oike , Hiraku Hirabayashi , Shin Narushima , Takamitsu Sakamoto , Kiyoshi Noguchi
IPC分类号： G11B5/147 , G11B5/187 , G11B5/31
CPC分类号： G11B5/187 , G11B5/3116 , G11B5/3163
摘要： A thin-film magnetic head comprising an inductive element including at least: a lower magnetic pole; a write gap layer; and an upper magnetic pole opposed to the lower magnetic pole through the write gap layer, a width WP2 in a track-width direction at a facing-to-magnetic-medium top end of the upper magnetic pole being larger than a width WP1 in the track-width direction at a facing-to-magnetic-medium top end of the lower magnetic pole, and a distance FPDP2 between the top end of the upper magnetic pole and a flare point of the upper magnetic pole being smaller than a distance FPDP1 between the top end of the lower magnetic pole and a flare point of the lower magnetic pole, is provided.
摘要翻译：一种薄膜磁头，包括至少包括下磁极的感应元件; 写间隙层; 以及通过写入间隙层与下部磁极相对的上部磁极，在上部磁极的面对磁性介质顶端的轨道宽度方向上的宽度W P2 大于在下磁极的面对磁介质顶端处的轨道宽度方向上的宽度W P1 P1和之间的距离FPD P2 被提供。

76. 发明申请

US20050013044A1 Perpendicular magnetic recording element, magnetic head, magnetic head device and magnetic recording/reproducing apparatus 有权
标题翻译：垂直磁记录元件，磁头，磁头装置和磁记录/重放装置
公开(公告)号：US20050013044A1
公开(公告)日：2005-01-20
申请号：US10891182
申请日：2004-07-15
申请人： Kei Hirata , Kiyoshi Noguchi , Tetsuya Mino , Tetsuya Roppongi
发明人： Kei Hirata , Kiyoshi Noguchi , Tetsuya Mino , Tetsuya Roppongi
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： G11B5/127
摘要： The soft magnetic film takes its hard axis along the direction in which a magnetic field is generated and its easy axis along a direction perpendicular to the direction of the writer magnetic field. The magnetic bias film applies a magnetic bias along the easy axis to the soft magnetic film.
摘要翻译：软磁性膜沿其沿着写入磁场方向垂直的方向沿其产生磁场的方向和其容易的轴取其硬轴。磁偏置膜沿着容易的轴向磁性膜施加磁偏置。

77. 发明授权

US5968676A Magnetoresistance effect film and magnetoresistance effect type head 失效
标题翻译：磁阻效应膜和磁阻效应型头
公开(公告)号：US5968676A
公开(公告)日：1999-10-19
申请号：US993019
申请日：1997-12-18
申请人： Satoru Araki , Kiyoshi Noguchi
发明人： Satoru Araki , Kiyoshi Noguchi
IPC分类号： G11B5/31 , G11B5/39 , H01F10/08 , H01F10/30 , H01F10/32 , H01L43/08 , H01L43/10 , G11B5/66
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , H01F10/3268 , H01L43/10 , B41J2002/041 , G11B2005/3996 , G11B5/3163 , Y10S428/90 , Y10T428/1107
摘要： A spin valve type magnetoresistance effect film comprises a magnetic multilayered film including a non-magnetic metal layer, a ferromagnetic layer formed on one surface of the non-magnetic metal layer, a soft magnetic layer formed on the other surface of the non-magnetic metal layer, and an antiferromagnetic layer which is formed on a surface of the ferromagnetic layer remote from a surface thereof abutting the non-magnetic metal layer so as to pin a direction of magnetization of the ferromagnetic layer. The antiferromagnetic layer contains oxygen as impurities and a concentration of oxygen contained in the antiferromagnetic layer is set to 1 to 2,000 atomic ppm. With this arrangement, there can be provided a magnetoresistance effect film having a high-quality antiferromagnetic layer which is excellent in thermal stability, sufficiently high in blocking temperature and highly excellent in pinning effect. Further, there can be provided a magnetoresistance effect type head which is excellent in thermal stability, high in magnetic field sensitivity and large in MR change ratio.
摘要翻译：自旋阀型磁阻效应膜包括：包含非磁性金属层的磁性多层膜，形成在非磁性金属层的一个表面上的铁磁层，形成在非磁性金属的另一个表面上的软磁性层层和反铁磁层，其形成在铁磁层的远离其与非磁性金属层相邻的表面的表面上，以便引导铁磁层的磁化方向。反铁磁性层含有氧作为杂质，反铁磁性层中所含的氧浓度为1〜2000原子ppm。通过这种布置，可以提供具有优异的热稳定性，阻断温度足够高，钉扎效果优异的高品质反铁磁层的磁阻效应膜。此外，可以提供热稳定性优异，磁场灵敏度高，MR变化率大的磁阻效应型头。

78. 发明授权

US4594296A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4594296A
公开(公告)日：1986-06-10
申请号：US562071
申请日：1983-12-16
申请人： Kiyoshi Noguchi , Kouji Kobayashi , Suguru Takayama
发明人： Kiyoshi Noguchi , Kouji Kobayashi , Suguru Takayama
IPC分类号： G11B5/706 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/716 , G11B5/85
CPC分类号： G11B5/66 , G11B5/716 , Y10S428/928 , Y10T428/12458 , Y10T428/12465 , Y10T428/12861
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, wherein, when the magnetic layer is divided equally into four portions in the direction of the thickness of the magnetic layer, the density of the portion located farthest from the substrate is greater by at least 20% than the average density of three other portions.
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的磁性层和从由Ni，Cr和O组成的组中选择的一种至三种元素的磁性层，其中当磁性层被均匀地分成四部分时磁性层的厚度方向，距离基板最远的部分的密度比三个其它部分的平均密度大至少20％。

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