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81.发明授权公开(公告)号：US08315015B2
公开(公告)日：2012-11-20
申请号：US13431004
申请日：2012-03-27
申请人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
发明人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
IPC分类号： G11B5/127
CPC分类号： G11B5/3143 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.
摘要翻译： 根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽， 轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。
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82.发明申请公开(公告)号：US20050052787A1
公开(公告)日：2005-03-10
申请号：US10936715
申请日：2004-09-09
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3906 , G11B5/398 , G11B5/3983 , G11B2005/3996 , H01F10/3259 , H01F10/3263 , H01L43/08
摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.
摘要翻译： 使用电流垂直于平面（CPP）系统的双自旋阀类型的磁阻效应元件，其中感测电流垂直于多个导电层的堆叠面流动，磁阻效应元件包括第一单元 其包括自由层和第一钉扎层，第二单元，其包括与第一单元共享的自由层和第二钉扎层，第一电流控制层，设置在第一单元中并限制感测的流量 电流和第二电流控制层，其设置在第二单元中并限制感测电流的流量。
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83.发明授权公开(公告)号：US08730616B2
公开(公告)日：2014-05-20
申请号：US13585285
申请日：2012-08-14
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/23 , G11B5/3146 , G11B5/3163 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes a main pole, a trailing shield opposing the main pole with a write gap therebetween, and a high-frequency oscillator between a distal end portion of the main pole and the trailing shield configured to produce a high-frequency magnetic field. The high-frequency oscillator includes a lower end surface facing the recording medium and an upper end surface substantially parallel to the lower end surface. The width of the lower end surface in a track-width direction is smaller than that of the upper end surface.
摘要翻译： 根据一个实施例，磁记录头包括主极，与主极相对的后屏蔽件，其间具有写入间隙，以及在主极的远端部分和后屏蔽件之间的高频振荡器，其被配置为产生 高频磁场。 高频振荡器包括面向记录介质的下端表面和基本上平行于下端表面的上端表面。 下端面在轨道宽度方向上的宽度小于上端面的宽度。
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公开(公告)号：US20130063840A1
公开(公告)日：2013-03-14
申请号：US13531276
申请日：2012-06-22
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3146 , G11B5/746 , G11B2005/0024
摘要： According to one embodiment, a magnetic head has a main magnetic pole, a write-shield constituting the main magnetic pole and a magnetic circuit, and a spin torque oscillation element provided between the main magnetic pole and the write-shield. The spin torque oscillation element is provided with a first oscillation layer, a nonmagnetic spin sink layer, a second oscillation layer, a nonmagnetic intermediate layer, and a spin injection layer provided in sequence from the write-shield side to the main magnetic pole side. The nonmagnetic spin sink layer is formed of at least one element selected from the group consisting of Ru, Rh, Ta, W, Cr, Ir, Mo, Re, Nb, Pt, and Pd.
摘要翻译： 根据一个实施例，磁头具有主磁极，构成主磁极的写屏蔽和磁路，以及设置在主磁极和写屏蔽之间的自旋扭矩振荡元件。 旋转扭矩振荡元件设置有从写入屏蔽侧到主磁极侧依次设置的第一振荡层，非磁性自旋沉积层，第二振荡层，非磁性中间层和自旋注入层。 非磁性自旋沉积层由选自Ru，Rh，Ta，W，Cr，Ir，Mo，Re，Nb，Pt和Pd中的至少一种元素形成。
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85.发明授权公开(公告)号：US07405906B2
公开(公告)日：2008-07-29
申请号：US10936715
申请日：2004-09-09
IPC分类号： G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3906 , G11B5/398 , G11B5/3983 , G11B2005/3996 , H01F10/3259 , H01F10/3263 , H01L43/08
摘要： A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.
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公开(公告)号：US20070268626A1
公开(公告)日：2007-11-22
申请号：US11797447
申请日：2007-05-03
申请人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
发明人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
IPC分类号： G11B5/147
CPC分类号： G11B5/3143 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.
摘要翻译： 根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽， 轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。
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公开(公告)号：US08976490B2
公开(公告)日：2015-03-10
申请号：US13565418
申请日：2012-08-02
申请人： Kenichiro Yamada , Katsuhiko Koui
发明人： Kenichiro Yamada , Katsuhiko Koui
CPC分类号： G11B5/35 , G11B5/1278 , G11B5/315 , G11B2005/0005 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a trailing shield opposed to the main pole with a write gap therebetween, and a high-frequency oscillator between the main pole and the trailing shield in a range of a width of the main pole in a track width direction, and configured to generate a high-frequency magnetic field. The high-frequency oscillator includes a spin injection layer, an intermediate layer, and an oscillation layer, and at least the oscillation layer comprises divided oscillation regions.
摘要翻译： 根据一个实施例，磁记录头包括：主极，被配置为向记录介质的记录层施加记录磁场;与主极相对的后屏蔽，其间具有写入间隙;以及高频振荡器， 所述主极和所述后屏蔽体在所述主极的宽度方向上在轨道宽度方向上的宽度范围内，并且被配置为产生高频磁场。 高频振荡器包括自旋注入层，中间层和振荡层，至少振荡层包括分频振荡区域。
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88.发明授权公开(公告)号：US08929031B2
公开(公告)日：2015-01-06
申请号：US13291777
申请日：2011-11-08
CPC分类号： G11B5/3163 , B82Y40/00 , G11B5/1278 , G11B5/314 , G11B2005/0024 , H01F10/325 , H01F10/3286 , H01F10/329 , H01F41/302 , H01F41/308 , H01L43/08 , Y10T29/4902 , Y10T29/49032 , Y10T428/1186
摘要： According to one embodiment, there is provided a spin torque oscillator including an oscillation layer formed of a magnetic material, a spin injection layer formed of a magnetic material and configured to inject a spin into the oscillation layer, and a current confinement layer including an insulating portion formed of an oxide or a nitride and a conductive portion formed of a nonmagnetic metal and penetrating the insulating portion in a direction of stacking. The conductive portion of the current confinement layer is positioned near a central portion of a plane of a device region including the oscillation layer and the spin injection layer.
摘要翻译： 根据一个实施例，提供了一种自旋扭矩振荡器，其包括由磁性材料形成的振荡层，由磁性材料形成的自旋注入层，并被配置为向振荡层注入自旋;以及电流限制层，其包括绝缘体 由氧化物或氮化物形成的部分和由非磁性金属形成的导电部分，并且在堆叠方向上穿透绝缘部分。 电流限制层的导电部分位于包括振荡层和自旋注入层的器件区域平面的中心部分附近。
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公开(公告)号：US08817419B2
公开(公告)日：2014-08-26
申请号：US13171418
申请日：2011-06-28
申请人： Soichi Oikawa , Katsuhiko Koui
发明人： Soichi Oikawa , Katsuhiko Koui
CPC分类号： G11B5/3146 , G11B5/1278 , G11B2005/0005 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes a main magnetic pole generating a recording magnetic field in a magnetic recording medium, a return yoke paired with the main magnetic pole, and a spin torque oscillator interposed between the main magnetic pole and the return yoke and including a spin injection layer, an oscillation layer, a nonmagnetic metal layer, and spin assist layer stacked in this order, wherein the nonmagnetic metal layer includes at least one metal selected from the group consisting of Cu, Au, Ag, Al, Pd, Pt, Os, and Ir, and the spin assist layer is a soft magnetic layer whose saturation magnetic flux density (Bs), diamagnetic field coefficient (N) and gap magnetic field (Hg) show a relationship expressed by Bs×N>Hg.
摘要翻译： 根据一个实施例，磁记录头包括在磁记录介质中产生记录磁场的主磁极，与主磁极配对的返回磁轭和插在主磁极和返回磁轭之间的自旋扭矩振荡器 并且包括依次层叠的自旋注入层，振荡层，非磁性金属层和自旋辅助层，其中，所述非磁性金属层包含选自Cu，Au，Ag，Al，Pd ，Pt，Os和Ir，自旋辅助层是饱和磁通密度（Bs），反磁场系数（N）和间隙磁场（Hg）表现出由Bs×N> Hg表示的关系的软磁性层 。
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90.发明授权Recording head with high-frequency oscillator and bi-layer main pole height/width arrangement 有权录音头采用高频振荡器和双层主极高/宽布置公开(公告)号：US08705204B2
公开(公告)日：2014-04-22
申请号：US13591012
申请日：2012-08-21
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B2005/0002
摘要： According to one embodiment, a main pole of a recording head includes a first magnetic pole layer and a second magnetic pole layer laminated on the trailing side of the first magnetic pole layer. The first magnetic pole layer includes a tapered portion and a first tip portion. The second magnetic pole layer includes a tapered portion and a second tip portion. A width in a track direction of the second tip portion is smaller than that of the first tip portion. The high-frequency oscillator is between the second tip portion and the trailing shield and includes a width in the track direction substantially equal to the width in the track direction of the second tip portion, and a height of the first tip portion is taller than that of the second tip portion.
摘要翻译： 根据一个实施例，记录头的主极包括层叠在第一磁极层的后侧上的第一磁极层和第二磁极层。 第一磁极层包括锥形部分和第一末端部分。 第二磁极层包括锥形部分和第二尖端部分。 第二前端部的轨道方向的宽度小于第一前端部的宽度。 所述高频振荡器位于所述第二前端部与所述后屏蔽之间，并且包括所述轨道方向上的宽度大致等于所述第二前端部的轨道方向的宽度，所述第一前端部的高度高于所述第二前端部的高度。 的第二尖端部分。
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