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1. 发明授权

US5958611A Magnetic multilayered film, magnetoresistance effect element and magnetoresistance device 失效
标题翻译：磁性多层膜，磁阻效应元件和磁阻器件
公开(公告)号：US5958611A
公开(公告)日：1999-09-28
申请号：US873739
申请日：1997-06-12
申请人： Manabu Ohta , Kiyoshi Noguchi , Masashi Sano , Satoru Araki , Taro Oike
发明人： Manabu Ohta , Kiyoshi Noguchi , Masashi Sano , Satoru Araki , Taro Oike
IPC分类号： G11B5/31 , G11B5/39 , H01F10/08 , H01F10/32 , H01L43/08 , H01L43/10 , G11B5/66
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , H01F10/3268 , H01L43/10 , G11B2005/3996 , G11B5/3163 , Y10S428/90 , Y10T428/1107 , Y10T428/1121 , Y10T428/24355
摘要： According to the present invention, a magnetic multilayered film includes an oxide antiferromagnetic layer, a pinned ferromagnetic layer which is pinned by the oxide antiferromagnetic layer, a non-magnetic metal layer and a free ferromagnetic layer which are stacked on a substrate in order. A surface roughness Ra of the oxide antiferromagnetic layer at the side of the pinned ferromagnetic layer is set to no greater than 0.6 nm, and a crystal grain size D of the oxide antiferromagnetic layer is set to a value in the range of 10 to 40 nm. Thus, the magnetic multilayered film has the large exchange-coupling magnetic field and MR ratio and MR sensitivity. The magnetic multilayered film may be applied to a magnetoresistance effect element which may also applied to a magnetoresistance device, such as, a magnetoresistance effect type head. The magnetoresistance effect element having such a magnetic multilayered film is capable of obtaining high outputs. The magnetoresistance effect type head having such a magnetoresistance effect element which is excellent in current efficiency and capable of detecting signals magnetically recorded in high density, particularly in ultrahigh density exceeding 3 Gbit/inch.sup.2 and further obtaining large outputs.
摘要翻译：根据本发明，磁性多层膜包括氧化物反铁磁性层，由氧化物反铁磁层固定的钉扎铁磁性层，依次层叠在基板上的非磁性金属层和自由铁磁性层。在被钉扎的铁磁层一侧的氧化物反铁磁性层的表面粗糙度Ra被设定为不大于0.6nm，并且氧化物反铁磁性层的晶粒尺寸D设定在10至40nm的范围内的值。因此，磁性多层膜具有大的交换耦合磁场和MR比和MR灵敏度。可以将磁性多层膜施加到也可以施加到诸如磁阻效应型头的磁阻器件的磁阻效应元件。具有这种磁性多层膜的磁阻效应元件能够获得高输出。具有这样的磁阻效应元件的磁电阻效应型头具有优异的电流效率，能够检测高密度地磁记录的信号，特别是超过3Gbit / inch2的超高密度，并进一步获得大的输出。

2. 发明授权

US5862022A Ferromagnetic tunnel junction, magnetoresistive element and magnetic head 失效
标题翻译：铁磁隧道结，磁阻元件和磁头
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。

3. 发明申请

US20100123966A1 MAGNETIC HEAD, HEAD ASSEMBLY AND MAGNETIC RECORDING/REPRODUCING APPARATUS 有权
标题翻译：磁头，头组件和磁记录/再现装置
公开(公告)号：US20100123966A1
公开(公告)日：2010-05-20
申请号：US12274470
申请日：2008-11-20
申请人： Yosuke ANTOKU , Takeo Kagami , Katsuki Kurihara , Taro Oike , Masashi Sano
发明人： Yosuke ANTOKU , Takeo Kagami , Katsuki Kurihara , Taro Oike , Masashi Sano
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , G11B5/6064 , G11B5/607 , G11B5/6076 , G11B2005/0005
摘要： The present invention relates to a magnetic head, a head assembly, and a magnetic recording/reproducing apparatus which are capable of effectively detecting thermal asperity. The magnetic head according to the present invention includes a heat-generating resistor, a recording coil, and a resistive element. The heat-generating resistor is adapted to generate heat when power is fed thereto so that the heat generation causes at least a part of the air bearing surface to thermally expand and protrude. The recording coil is adapted to generate a recording magnetic field, and the resistive element is disposed closer to the air bearing surface than the recording coil and connected in series or in parallel with the heater. Thus, the resistive element can share a common wiring with the heater for power feeding, which eliminates the waste of wiring and achieves miniaturization.
摘要翻译：本发明涉及能够有效地检测热凹凸的磁头，磁头组件和磁记录/重放装置。根据本发明的磁头包括发热电阻器，记录线圈和电阻元件。发热电阻适用于在供电时产生热量，使得发热导致空气轴承表面的至少一部分热膨胀和突出。记录线圈适于产生记录磁场，并且电阻元件设置为比记录线圈更靠近空气轴承表面并与加热器串联或并联连接。因此，电阻元件可以与用于供电的加热器共用公共布线，这消除了布线的浪费并实现了小型化。

4. 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。

5. 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。

6. 发明授权

US07239480B2 Thin film magnetic head having an upper pole portion with a width that increases towards an abs 失效
标题翻译：薄膜磁头具有具有朝向绝缘体增加的宽度的上极部分
公开(公告)号：US07239480B2
公开(公告)日：2007-07-03
申请号：US11068967
申请日：2005-03-02
申请人： Hiraku Hirabayashi , Kiyoshi Noguchi , Taro Oike , Shin Narushima , Takamitsu Sakamoto
发明人： Hiraku Hirabayashi , Kiyoshi Noguchi , Taro Oike , Shin Narushima , Takamitsu Sakamoto
IPC分类号： G11B5/187
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A thin film magnetic head is provided to reduce excess magnetostatic leakage field in order to generate a sufficient recording magnetic field. The pole end portion has a width to define a recording track width. The pole rear portion has one end which is magnetically connected with the pole end portion at or in the vicinity of an edge portion of an insulating film and defines a first flare point, the other end which is connected with the upper yoke portion and defines a second flare point, and both side edges in the track width direction which are inclined so that the width in the track width direction gradually increases from the second flare point toward the first flare point. The width of the pole end portion at the first flare point is smaller than the maximum width of the pole rear portion.
摘要翻译：提供薄膜磁头以减少多余的静磁泄漏场，以产生足够的记录磁场。极端部具有限定记录轨道宽度的宽度。极后部具有在绝缘膜的边缘部分处或附近与极端部磁性连接的端部，并且限定第一扩口点，另一端与上轭部连接并限定一个第二耀斑点和轨道宽度方向上的两个侧边缘，其倾斜，使得轨道宽度方向上的宽度从第二扩张点朝向第一扩张点逐渐增加。第一扩张点处的极端部的宽度小于极后部的最大宽度。

7. 发明授权

US08144427B2 Magnetic head, head assembly and magnetic recording/reproducing apparatus 有权
标题翻译：磁头，头组件和磁记录/再现装置
公开(公告)号：US08144427B2
公开(公告)日：2012-03-27
申请号：US12274470
申请日：2008-11-20
申请人： Yosuke Antoku , Takeo Kagami , Katsuki Kurihara , Taro Oike , Masashi Sano
发明人： Yosuke Antoku , Takeo Kagami , Katsuki Kurihara , Taro Oike , Masashi Sano
IPC分类号： G11B5/10 , G11B5/56
CPC分类号： G11B5/314 , G11B5/6064 , G11B5/607 , G11B5/6076 , G11B2005/0005
摘要： The present invention relates to a magnetic head, a head assembly, and a magnetic recording/reproducing apparatus which are capable of effectively detecting thermal asperity. The magnetic head according to the present invention includes a heat-generating resistor, a recording coil, and a resistive element. The heat-generating resistor is adapted to generate heat when power is fed thereto so that the heat generation causes at least a part of the air bearing surface to thermally expand and protrude. The recording coil is adapted to generate a recording magnetic field, and the resistive element is disposed closer to the air bearing surface than the recording coil and connected in series or in parallel with the heater. Thus, the resistive element can share a common wiring with the heater for power feeding, which eliminates the waste of wiring and achieves miniaturization.
摘要翻译：本发明涉及能够有效地检测热凹凸的磁头，磁头组件和磁记录/重放装置。根据本发明的磁头包括发热电阻器，记录线圈和电阻元件。发热电阻适用于在供电时产生热量，使得发热导致空气轴承表面的至少一部分热膨胀和突出。记录线圈适于产生记录磁场，并且电阻元件设置为比记录线圈更靠近空气轴承表面并与加热器串联或并联连接。因此，电阻元件可以与用于供电的加热器共用公共布线，这消除了布线的浪费并实现了小型化。

8. 发明授权

US07372667B2 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：US07372667B2
公开(公告)日：2008-05-13
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： G11B5/31
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。

9. 发明授权

US07248435B2 Thin-film magnetic head with gap and pole portion layers having cross sections of the same shapes and predetermined parameter ranges 失效
标题翻译：具有间隙和极部分层的薄膜磁头具有相同形状和预定参数范围的横截面
公开(公告)号：US07248435B2
公开(公告)日：2007-07-24
申请号：US10827632
申请日：2004-04-20
申请人： Taro Oike , Kiyoshi Noguchi , Seiji Yari
发明人： Taro Oike , Kiyoshi Noguchi , Seiji Yari
IPC分类号： G11B5/31 , G11B5/23 , G11B5/39
CPC分类号： G11B5/3906
摘要： A bottom pole layer and a top pole layer respectively incorporate pole portion layers. Cross sections of the pole portion layers and a gap layer parallel to the top surface of a substrate are of the same shapes. The aggregate of the pole portion layers and the gap layer includes a first portion having a width W that defines the track width, and a second portion having a width greater than the width W of the first portion. L/W falls within a range of 2 to 5 inclusive, where L is the distance from a medium facing surface to the interface between the first portion and the second portion. S/(W×L) falls within a range of 5 to 40 inclusive, where S is the area of the cross section of the aggregate parallel to the top surface of the substrate.
摘要翻译：底极层和顶极层分别包括极部分层。极性部分层的横截面和与衬底的顶表面平行的间隙层具有相同的形状。极部分层和间隙层的聚集体包括具有限定轨道宽度的宽度W的第一部分和宽度大于第一部分宽度W的第二部分。 L / W落在2到5的范围内，其中L是从介质面向表面到第一部分和第二部分之间的界面的距离。 S /（WxL）在5〜40的范围内，其中S是与基板的顶面平行的集合体的横截面积。

10. 发明申请

US20050195526A1 Thin film magnetic head 失效
标题翻译：薄膜磁头
公开(公告)号：US20050195526A1
公开(公告)日：2005-09-08
申请号：US11068967
申请日：2005-03-02
申请人： Hiraku Hirabayashi , Kiyoshi Noguchi , Taro Oike , Shin Narushima , Takamitsu Sakamoto
发明人： Hiraku Hirabayashi , Kiyoshi Noguchi , Taro Oike , Shin Narushima , Takamitsu Sakamoto
IPC分类号： G11B5/31 , G11B5/147
CPC分类号： G11B5/3116 , G11B5/1278
摘要： The present invention is intended for a thin film magnetic head which can provide reduction in the excess magnetostatic leakage field even if the flare point is set near to the ABS in order to generate a sufficient recording magnetic field and which can assure stable overwrite characteristics even if there are variations in upper pole portion patterns. The pole end portion 223 has a width W11 to define a recording track width. The pole rear portion 222 has one end which is magnetically connected with the pole end portion 223 at or in the vicinity of an edge portion of an insulating film 273 and defines a first flare point FP1, the other end which is connected with the upper yoke portion 221 and defines a second flare point FP2, and both side edges in the track width direction which are inclined so that the width in the track width direction gradually increases from the second flare point FP2 toward the first flare point FP1. The width W11 of the pole end portion 223 at the first flare point FP1 is smaller than the maximum width W21 of the pole rear portion 222.
摘要翻译：本发明的目的在于一种薄膜磁头，即使将扩张点设置在靠近ABS的情况下也能够提供过剩的静磁泄漏场，以产生足够的记录磁场，即使在上极部分图形有变化。极端部223具有宽度W 11，以限定记录轨道宽度。极后部222的一端在绝缘膜273的边缘部分处或附近与极端部223磁性连接，并且限定第一扩口点FP1，另一端与上端轭部221，并且限定第二扩张点FP 2，以及轨道宽度方向上的两个侧边缘，其倾斜，使得轨道宽度方向上的宽度从第二扩张点FP 2朝向第一扩张点FP 1逐渐增加。第一点火点FP 1的极端部223的宽度W 11比极后部222的最大宽度W 21小。

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