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61. 发明申请

US20120275061A1 MAGNETIC RECORDING DEVICE 有权
标题翻译：磁记录装置
公开(公告)号：US20120275061A1
公开(公告)日：2012-11-01
申请号：US13459610
申请日：2012-04-30
申请人： Masayuki TAKAGISHI , Hitoshi Iwasaki , Kenichiro Yamada , Katsuhiko Koui , Tomomi Funayama , Masahiro Takashita , Mariko Kitazaki , Soichi Oikawa
发明人： Masayuki TAKAGISHI , Hitoshi Iwasaki , Kenichiro Yamada , Katsuhiko Koui , Tomomi Funayama , Masahiro Takashita , Mariko Kitazaki , Soichi Oikawa
IPC分类号： G11B5/127 , G11B5/17
CPC分类号： G11B5/3146 , G11B5/02 , G11B5/1278 , G11B5/65 , G11B2005/0005 , G11B2005/0024 , H01F10/123 , H01L43/08
摘要： According to one embodiment, a magnetic recording device includes a magnetic recording head and a magnetic recording medium. The magnetic recording head includes a main magnetic pole, a shield and a stacked structure. The main magnetic pole has a medium facing surface and a main magnetic pole side surface. The shield has a shield side surface. The stacked structure is provided between the main magnetic pole and shield, and includes first and second magnetic layers, and an intermediate layer. The magnetic recording medium includes a backing layer and a magnetic recording layer. A distance between an end portion of the medium facing surface on a side of the stacked structure and the backing layer is twice or more of a distance between the main magnetic pole side surface and the shield side surface.
摘要翻译：根据一个实施例，磁记录装置包括磁记录头和磁记录介质。磁记录头包括主磁极，屏蔽和堆叠结构。主磁极具有中等面向表面和主磁极侧表面。屏蔽有屏蔽侧面。堆叠结构设置在主磁极和屏蔽之间，并且包括第一和第二磁性层以及中间层。磁记录介质包括背衬层和磁记录层。层叠结构一侧的介质相对表面的端部与背衬层之间的距离是主磁极侧表面和屏蔽侧表面之间的距离的两倍或更多。

62. 发明申请

US20120019960A1 MAGNETIC RECORDING MEDIUM 失效
标题翻译：磁记录介质
公开(公告)号：US20120019960A1
公开(公告)日：2012-01-26
申请号：US13175358
申请日：2011-07-01
申请人： Masatoshi Sakurai , Yousuke Isowaki , Soichi Oikawa
发明人： Masatoshi Sakurai , Yousuke Isowaki , Soichi Oikawa
IPC分类号： G11B5/82 , G11B5/66 , G11B5/65
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/746 , G11B5/82
摘要： According to one embodiment, a bit patterned medium includes a substrate, and a magnetic recording layer disposed above the substrate and including patterns of protrusions. Each of the protrusions contains a plurality of crystal grains. An average distance between the crystal grains is 0.5 to 3.0 nm in each of the protrusions. The protrusions include first protrusions each having a length of 1 μm or more in a radial direction of the medium and second protrusions each having a length in the radial direction shorter than the length of the first protrusion in the radial direction. Each of the first protrusions has a nucleation field Hn for magnetization reversal and a coercive force Hc satisfying the inequalities, Hn≧1.5 kOe and 0.5 kOe≦Hc−Hn≦1.5 kOe.
摘要翻译：根据一个实施例，位图案化介质包括衬底和设置在衬底上方并包括突起图案的磁记录层。每个突起包含多个晶粒。每个突起中晶粒之间的平均距离为0.5至3.0nm。突起包括在介质的径向上具有1μm以上的长度的第一突起和在径向上的长度比第一突起的径向的长度短的第二突起。每个第一突起具有用于磁化反转的成核磁场Hn和满足不等式Hn≥1.5kOe和0.5kOe＆amp; NlE; Hc-Hn＆nlE; 1.5kOe的矫顽力Hc。

63. 发明申请

US20110228423A1 MAGNETIC RECORDING HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/REPRODUCING APPARATUS 审中-公开
标题翻译：磁记录头，磁头组件和磁记录/再现装置
公开(公告)号：US20110228423A1
公开(公告)日：2011-09-22
申请号：US12880676
申请日：2010-09-13
申请人： Katsuhiko Koui , Kenichiro Yamada , Mariko Kitazaki , Hitoshi Iwasaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Soichi Oikawa
发明人： Katsuhiko Koui , Kenichiro Yamada , Mariko Kitazaki , Hitoshi Iwasaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Soichi Oikawa
IPC分类号： G11B5/127 , G11B5/48 , G11B21/02
CPC分类号： G11B5/3146 , G11B5/1278 , G11B5/3116 , G11B2005/0024
摘要： A magnetic recording head includes a first ferromagnetic layer, an intermediate layer, a third ferromagnetic layer, a first magnetic pole and a second magnetic pole. The intermediate layer is provided between the first ferromagnetic layer and the second ferromagnetic layer. The third ferromagnetic layer includes a CoIr alloy and is provided so that the first ferromagnetic layer is sandwiched between the third ferromagnetic layer and the intermediate layer. The first magnetic pole is provided so that the third ferromagnetic layer is sandwiched between the first magnetic pole and the first ferromagnetic layer. The second magnetic pole is provided so that the second ferromagnetic layer is sandwiched between the second magnetic pole and the intermediate layer.
摘要翻译：磁记录头包括第一铁磁层，中间层，第三铁磁层，第一磁极和第二磁极。中间层设置在第一铁磁层和第二铁磁层之间。第三铁磁层包括CoIr合金，并且被设置为使得第一铁磁层夹在第三铁磁层和中间层之间。第一磁极被设置成使得第三铁磁层夹在第一磁极和第一铁磁层之间。第二磁极被设置成使得第二铁磁层夹在第二磁极和中间层之间。

64. 发明申请

US20100073806A1 Magnetic recording head and magnetic recording apparatus 审中-公开
标题翻译：磁记录头和磁记录装置
公开(公告)号：US20100073806A1
公开(公告)日：2010-03-25
申请号：US12585459
申请日：2009-09-15
申请人： Katsuhiko Koui , Hitoshi Iwasaki , Masayuki Takagishi , Kenichiro Yamada , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu , Soichi Oikawa
发明人： Katsuhiko Koui , Hitoshi Iwasaki , Masayuki Takagishi , Kenichiro Yamada , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu , Soichi Oikawa
IPC分类号： G11B21/02 , G11B5/127
CPC分类号： G11B5/1278 , G11B5/02 , G11B5/3133 , G11B5/3146 , G11B2005/0002 , H03B15/006
摘要： It is made possible to improve the recording resolution. A magnetic recording head includes: a magnetic pole that has a first magnetic portion including an air bearing surface, and generates a write magnetic field; and a spin torque oscillator that is formed on the air bearing surface of the magnetic pole, and is formed with a stack structure including a first magnetic layer, a second magnetic layer, and a nonmagnetic layer interposed between the first magnetic layer and the second magnetic layer, the second magnetic layer generating a high-frequency magnetic field when current is applied between the first magnetic layer and the second magnetic layer.
摘要翻译：可以提高记录分辨率。磁记录头包括：具有包括空气轴承表面的第一磁性部分并产生写入磁场的磁极; 以及旋转扭矩振荡器，其形成在所述磁极的所述空气支承面上，并且形成有堆叠结构，所述堆叠结构包括介于所述第一磁性层和所述第二磁性层之间的第一磁性层，第二磁性层和非磁性层层，当第一磁性层和第二磁性层之间施加电流时，第二磁性层产生高频磁场。

65. 发明授权

US08817419B2 Magnetic recording head and magnetic recording apparatus 有权
标题翻译：磁记录头和磁记录装置
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
IPC分类号： G11B5/127 , G11B13/08
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。

66. 发明授权

US08553359B2 Magnetic recording head and magnetic recording/reproducing apparatus using the same 有权
标题翻译：磁记录头和使用其的磁记录/再现装置
公开(公告)号：US08553359B2
公开(公告)日：2013-10-08
申请号：US12853690
申请日：2010-08-10
申请人： Kenichiro Yamada , Katsuhiko Koui , Mariko Kitazaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Soichi Oikawa , Akihiko Takeo
发明人： Kenichiro Yamada , Katsuhiko Koui , Mariko Kitazaki , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Soichi Oikawa , Akihiko Takeo
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , B82Y10/00 , G11B5/11 , G11B5/315 , G11B5/743
摘要： A magnetic recording head includes a magnetic pole, a spin torque oscillator, a first shield and a second shield. The magnetic pole has an air-bearing surface. The spin torque oscillator is provided so that a first side of the spin torque oscillator faces the magnetic pole in a first direction parallel to the air-bearing surface. The first shield includes a granular magnetic material, and is provided so that two portions of the first shield sandwich the spin torque oscillator in a second direction which is parallel to the air-bearing surface and perpendicular to the first direction. The second shield is provided on a second side of the spin torque oscillator opposite to the first side.
摘要翻译：磁记录头包括磁极，自旋转矩振荡器，第一屏蔽和第二屏蔽。磁极具有空气轴承表面。旋转扭矩振荡器被设置成使得旋转扭矩振荡器的第一侧在平行于空气轴承表面的第一方向上面对磁极。第一屏蔽包括颗粒状磁性材料，并且被设置成使得第一屏蔽的两个部分在平行于空气轴承表面并垂直于第一方向的第二方向上夹住旋转扭矩振荡器。第二屏蔽设置在与第一侧相反的自旋扭矩振荡器的第二侧上。

67. 发明授权

US08238058B2 Magnetic recording head, magnetic head assembly, and magnetic recording apparatus 有权
标题翻译：磁记录头，磁头组件和磁记录装置
公开(公告)号：US08238058B2
公开(公告)日：2012-08-07
申请号：US12737691
申请日：2011-02-07
申请人： Mariko Shimizu , Hitoshi Iwasaki , Kenichiro Yamada , Katsuhiko Koui , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Soichi Oikawa
发明人： Mariko Shimizu , Hitoshi Iwasaki , Kenichiro Yamada , Katsuhiko Koui , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Soichi Oikawa
IPC分类号： G11B5/127
CPC分类号： G11B5/02 , G11B5/1278 , G11B5/314 , G11B2005/0005 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes a main magnetic pole, a shield, and a stacked structure body. The shield is provided to oppose the main magnetic pole. The stacked structure body is provided between the main magnetic pole and the shield. The stacked structure body includes a first magnetic layer, a second magnetic layer, and an intermediate layer. The first magnetic layer has coercivity lower than a magnetic field applied from the main magnetic pole. A size of a film surface of the second magnetic layer is larger than a size of a film surface of the first magnetic layer. The intermediate layer is provided between the first magnetic layer and the second magnetic layer and is made of a nonmagnetic material. A current is configured to pass between the first magnetic layer and the second magnetic layer.
摘要翻译：根据一个实施例，磁记录头包括主磁极，屏蔽和堆叠结构体。提供屏蔽以与主磁极相对。堆叠结构体设置在主磁极和屏蔽之间。叠层结构体包括第一磁性层，第二磁性层和中间层。第一磁性层具有低于从主磁极施加的磁场的矫顽力。第二磁性层的膜表面的尺寸大于第一磁性层的膜表面的尺寸。中间层设置在第一磁性层和第二磁性层之间，并且由非磁性材料制成。电流配置成在第一磁性层和第二磁性层之间通过。

68. 发明授权

US08081397B2 Magnetic head assembly and magnetic recording apparatus 有权
标题翻译：磁头组件和磁记录装置
公开(公告)号：US08081397B2
公开(公告)日：2011-12-20
申请号：US12457674
申请日：2009-06-18
申请人： Tomomi Funayama , Kenichiro Yamada , Katsuhiko Koui , Hitoshi Iwasaki , Masayuki Takagishi , Masahiro Takashita , Mariko Shimizu , Soichi Oikawa
发明人： Tomomi Funayama , Kenichiro Yamada , Katsuhiko Koui , Hitoshi Iwasaki , Masayuki Takagishi , Masahiro Takashita , Mariko Shimizu , Soichi Oikawa
IPC分类号： G11B5/127
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3153 , G11B2005/0005
摘要： A magnetic head assembly includes a magnetic recording head, a main magnetic pole, a head slider, a suspension and an actuator arm. The magnetic recording head includes a main magnetic pole having an air bearing surface facing a magnetic recording medium; and a stacked structure having, a first magnetic layer, a second magnetic layer, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. A stacked plane of the stacked structure is inclined with respect to the air bearing surface. The magnetic recording head is mounted on the head slider. The head slider is mounted on one end of the suspension. The actuator arm is connected to the other end of the suspension.
摘要翻译：磁头组件包括磁记录头，主磁极，磁头滑块，悬架和致动器臂。磁记录头包括具有面向磁记录介质的空气轴承表面的主磁极; 以及具有第一磁性层，第二磁性层和设置在第一磁性层和第二磁性层之间的中间层的层叠结构。堆叠结构的层叠平面相对于空气轴承表面倾斜。磁记录头安装在磁头滑块上。磁头滑块安装在悬架的一端。执行器臂连接到悬架的另一端。

69. 发明申请

US20110205655A1 MAGNETIC RECORDING HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING APPARATUS 有权
标题翻译：磁记录头，磁头组件和磁记录装置
公开(公告)号：US20110205655A1
公开(公告)日：2011-08-25
申请号：US12737691
申请日：2011-02-07
申请人： Mariko Shimizu , Hitoshi Iwasaki , Kenichiro Yamada , Katsuhiko Koui , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Soichi Oikawa
发明人： Mariko Shimizu , Hitoshi Iwasaki , Kenichiro Yamada , Katsuhiko Koui , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita , Soichi Oikawa
IPC分类号： G11B5/39 , G11B5/48 , G11B5/02 , G11B5/09
CPC分类号： G11B5/02 , G11B5/1278 , G11B5/314 , G11B2005/0005 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes a main magnetic pole, a shield, and a stacked structure body. The shield is provided to oppose the main magnetic pole. The stacked structure body is provided between the main magnetic pole and the shield. The stacked structure body includes a first magnetic layer, a second magnetic layer, and an intermediate layer. The first magnetic layer has coercivity lower than a magnetic field applied from the main magnetic pole. A size of a film surface of the second magnetic layer is larger than a size of a film surface of the first magnetic layer. The intermediate layer is provided between the first magnetic layer and the second magnetic layer and is made of a nonmagnetic material. A current is configured to pass between the first magnetic layer and the second magnetic layer.
摘要翻译：根据一个实施例，磁记录头包括主磁极，屏蔽和堆叠结构体。提供屏蔽以与主磁极相对。堆叠结构体设置在主磁极和屏蔽之间。叠层结构体包括第一磁性层，第二磁性层和中间层。第一磁性层具有低于从主磁极施加的磁场的矫顽力。第二磁性层的膜表面的尺寸大于第一磁性层的膜表面的尺寸。中间层设置在第一磁性层和第二磁性层之间，并且由非磁性材料制成。电流配置成在第一磁性层和第二磁性层之间通过。

70. 发明授权

US07695832B2 Perpendicular magnetic recording medium and perpendicular magnetic recording/reproducing apparatus 有权
标题翻译：垂直磁记录介质和垂直磁记录/再现装置
公开(公告)号：US07695832B2
公开(公告)日：2010-04-13
申请号：US11441184
申请日：2006-05-26
申请人： Soichi Oikawa
发明人： Soichi Oikawa
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/8404
摘要： In a perpendicular magnetic recording medium, a multilayered underlayer including a first metal underlayer, a second metal underlayer having no solid solution properties with respect to the first metal underlayer and having a hole, and a third metal underlayer having solid solution properties with respect to the first metal underlayer and having no solid solution properties with respect to the second metal underlayer is formed on a substrate, and a magnetic recording layer is formed on the multilayered underlayer.
摘要翻译：在垂直磁记录介质中，包括第一金属底层的多层底层，相对于第一金属底层没有固溶性质的具有孔的第二金属底层和相对于第一金属底层具有固溶性质的第三金属底层在基板上形成第一金属底层并且在第二金属底层上没有固溶性，并且在多层底层上形成磁记录层。

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