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1.发明授权公开(公告)号：US06266216B1
公开(公告)日：2001-07-24
申请号：US08965811
申请日：1997-11-07
IPC分类号： G11B531
CPC分类号： G11B5/3967 , G11B5/09
摘要： An inductive/MR composite type thin-film magnetic head. In one embodiment, the inductive/MR composite type thin-film magnetic head is equipped with an inductive head used for writing. The inductive head includes an insulating film and a conductive coil that are laminated between upper and lower magnetic films. The inductive/MR composite type thin-film magnetic head also includes a magnetic resistance (MR) head used for read-out. The inductive/MR composite type thin-film magnetic head is characterized by the fact that a distance L between [i] the upper and lower magnetic poles, which face each other across a magnetic gap at the tip ends of the aforementioned upper and lower magnetic films and [ii] the point where the aforementioned upper and lower magnetic films are joined together has the relationship of L
摘要翻译： 电感/ MR复合型薄膜磁头。 在一个实施例中，电感/ MR复合型薄膜磁头配备有用于书写的感应头。 感应头包括层叠在上下磁性膜之间的绝缘膜和导电线圈。 感应/ MR复合型薄膜磁头还包括用于读出的磁阻（MR）头。 电感/ MR复合型薄膜磁头的特征在于，上述上磁极和下磁极之间的上磁极和下磁极之间的距离L彼此相对地跨越上述上下磁头的前端的磁隙 薄膜，[ii]上述上下磁性膜结合在一起的点相对于上述薄膜磁头的期望数据传输速率X（Mbit / sec）具有L <8400 / X的关系 。 在一个实施方案中，L小于或等于60微米。
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公开(公告)号：US5969911A
公开(公告)日：1999-10-19
申请号：US35778
申请日：1998-03-04
CPC分类号： G11B5/3967 , G11B5/313
摘要： An inductive/MR composite type thin film magnetic head which realizes high speed, high density recording while at the same time preventing the occurrence of read-out error by reducing NLTS. In one embodiment an inductive/MR composite type thin-film magnetic head is equipped with [a] an inductive head used for writing in which a magnetic gap layer, a conductive coil and insulating layers are laminated between upper and lower magnetic films, and [b] a magnetic resistance (MR) head used for read-out consisting of an MR element sandwiched between an upper shield which also serves as the aforementioned lower magnetic film, and a lower shield, the aforementioned conductive coil is formed in the shape of a solenoid which is wrapped around the aforementioned upper magnetic film by forming a lower coil part consisting of numerous segments on the surface of the first insulating layer, and then forming an upper coil part consisting of numerous segments from a point above a second insulating layer, upper magnetic film and third insulating layer laminated on the surface of the lower coil part, so that the respective end portions of the segments of the upper coil part are alternately connected with the respective end portions of the segments of the lower coil part.
摘要翻译： 一种电感/ MR复合型薄膜磁头，实现高速，高密度记录，同时通过减少NLTS来防止读出错误的发生。 在一个实施例中，电感/ MR复合型薄膜磁头配备有[a]用于写入的感应头，其中磁隙层，导电线圈和绝缘层层叠在上磁膜和下磁膜之间， b]用于读出的磁阻头（MR）头，其由夹在上面的上部屏蔽件之间的MR元件和下部屏蔽件组成，上述导电线圈形成为 螺线管，其通过在第一绝缘层的表面上形成由多个段组成的下线圈部分，然后由第二绝缘层上方的点形成由多个段组成的上线圈部分，缠绕在上述上磁膜上， 磁性膜和第三绝缘层层压在下线圈部分的表面上，使得上部线圈部分的段的各个端部交替地为c 与下线圈部分的各段的相应端部连接。
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3.发明授权公开(公告)号：US08767346B2
公开(公告)日：2014-07-01
申请号：US12591752
申请日：2009-11-30
IPC分类号： G11B5/17
CPC分类号： G11B5/09 , G11B5/1278 , G11B5/3123 , G11B5/3133 , G11B5/35 , G11B20/10222 , G11B2005/001
摘要： A magnetic recording head includes a first magnetic pole, a second magnetic pole, a spin torque oscillator, a first coil, a second coil, and a third coil. The first magnetic pole applies a recording magnetic field to a magnetic recording medium. The second magnetic pole is provided parallel to the first magnetic pole. At least a portion of the spin torque oscillator is provided between the first magnetic pole and the second magnetic pole. The first coil magnetizes the first magnetic pole. A current is passed through the second coil independently of the first coil. A current is passed through the third coil independently of both the first coil and the second coil.
摘要翻译： 磁记录头包括第一磁极，第二磁极，自旋扭矩振荡器，第一线圈，第二线圈和第三线圈。 第一磁极将记录磁场施加到磁记录介质。 第二磁极平行于第一磁极设置。 至少一部分自旋扭矩振荡器设置在第一磁极和第二磁极之间。 第一线圈磁化第一磁极。 独立于第一线圈的电流通过第二线圈。 独立于第一线圈和第二线圈两者都经过第三线圈。
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公开(公告)号：US20120275060A1
公开(公告)日：2012-11-01
申请号：US13545601
申请日：2012-07-10
申请人： Mariko Shimizu , Hitoshi Iwasaki , Kenichiro Yamada , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita
发明人： Mariko Shimizu , Hitoshi Iwasaki , Kenichiro Yamada , Junichi Akiyama , Masayuki Takagishi , Tomomi Funayama , Masahiro Takashita
CPC分类号： G11B5/314 , G11B2005/0005 , G11B2005/0024
摘要： An example magnetic head includes a recording magnetic pole to generate a recording magnetic field; a spin torque oscillator formed in the vicinity of the recording magnetic pole; and a hard bias film for applying a magnetic field to the spin torque oscillator.
摘要翻译： 示例磁头包括用于产生记录磁场的记录磁极; 形成在记录磁极附近的自旋转矩振荡器; 以及用于向自旋转矩振荡器施加磁场的硬偏置膜。
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5.发明申请公开(公告)号：US20120243127A1
公开(公告)日：2012-09-27
申请号：US13239496
申请日：2011-09-22
CPC分类号： G11B5/3906 , G01R33/093 , G11B5/1278 , G11B2005/0002 , G11B2005/0008 , H01F10/3254 , H01F10/3272 , H01F10/3286 , H01F10/329 , H01L43/08 , Y10T428/11
摘要： According to one embodiment, a magnetic head includes a reproducing section. The reproducing section detects a medium magnetic field recorded in a magnetic recording medium. The reproducing section includes a stacked film and a magnetic field application unit. The stacked film includes a first magnetization layer and a second magnetization layer. The first magnetization layer has a perpendicular magnetic anisotropy. A magnetization of the first magnetization layer being is fixed. The second magnetization layer is stacked with the first magnetization layer and oscillates. The magnetic field application unit is stacked with the stacked film and applies a bias magnetic field having a component along the first axis to the stacked film. A resistance of the stacked film changes in accordance with the medium magnetic field when a current not less than a value at which the second magnetization layer oscillates is passed.
摘要翻译： 根据一个实施例，磁头包括再现部分。 再现部分检测记录在磁记录介质中的介质磁场。 再现部分包括堆叠膜和磁场施加单元。 层叠膜包括第一磁化层和第二磁化层。 第一磁化层具有垂直的磁各向异性。 第一磁化层的磁化是固定的。 第二磁化层与第一磁化层堆叠并振荡。 磁场施加单元与层叠的膜堆叠，并且将具有沿着第一轴的分量的偏置磁场施加到堆叠的膜。 当不小于第二磁化层振荡的值的电流通过时，堆叠膜的电阻根据中等磁场而变化。
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公开(公告)号：US08264799B2
公开(公告)日：2012-09-11
申请号：US12109760
申请日：2008-04-25
IPC分类号： G11B5/33
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B2005/0002 , G11B2005/0024 , Y10T428/115
摘要： A magnetic device includes a first magnetic layer having at least one magnetic material layer, a second magnetic layer having at least one magnetic material layer, a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer, a third magnetic layer including a ferromagnetic material with a fixed magnetization direction, and a pair of electrodes. The pair of electrodes are operable to pass a current through a laminated body including the first and second magnetic layers, the nonmagnetic layer, and the third magnetic layer.
摘要翻译： 磁性装置包括具有至少一个磁性材料层的第一磁性层，具有至少一个磁性材料层的第二磁性层，设置在第一磁性层和第二磁性层之间的第一非磁性层，第三磁性层， 具有固定磁化方向的铁磁材料和一对电极。 一对电极可操作以使电流通过包括第一和第二磁性层，非磁性层和第三磁性层的层叠体。
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7.发明申请MAGNETIC RECORDING HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING/REPRODUCING APPARATUS 审中-公开磁记录头，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
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。
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8.发明申请公开(公告)号：US20100134922A1
公开(公告)日：2010-06-03
申请号：US12591752
申请日：2009-11-30
IPC分类号： G11B5/17
CPC分类号： G11B5/09 , G11B5/1278 , G11B5/3123 , G11B5/3133 , G11B5/35 , G11B20/10222 , G11B2005/001
摘要： A magnetic recording head includes a first magnetic pole, a second magnetic pole, a spin torque oscillator, a first coil, a second coil, and a third coil. The first magnetic pole applies a recording magnetic field to a magnetic recording medium. The second magnetic pole is provided parallel to the first magnetic pole. At least a portion of the spin torque oscillator is provided between the first magnetic pole and the second magnetic pole. The first coil magnetizes the first magnetic pole. A current is passed through the second coil independently of the first coil. A current is passed through the third coil independently of both the first coil and the second coil.
摘要翻译： 磁记录头包括第一磁极，第二磁极，自旋扭矩振荡器，第一线圈，第二线圈和第三线圈。 第一磁极将记录磁场施加到磁记录介质。 第二磁极平行于第一磁极设置。 至少一部分自旋扭矩振荡器设置在第一磁极和第二磁极之间。 第一线圈磁化第一磁极。 独立于第一线圈的电流通过第二线圈。 独立于第一线圈和第二线圈两者都经过第三线圈。
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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
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。
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10.发明申请Magnetic head for high-frequency field assist recording and magnetic recording apparatus using magnetic head for high-frequency field assist recording 审中-公开用于高频场辅助记录的磁头和使用用于高频场辅助记录的磁头的磁记录装置公开(公告)号：US20100027158A1
公开(公告)日：2010-02-04
申请号：US12461027
申请日：2009-07-29
申请人： Masayuki Takagishi , Kenichiro Yamada , Hitoshi Iwasaki , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
发明人： Masayuki Takagishi , Kenichiro Yamada , Hitoshi Iwasaki , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
CPC分类号： G11B5/02 , G11B5/314 , G11B2005/0005
摘要： A magnetic recording head includes: a magnetic pole; a magnetic shield forming a magnetic circuit with the magnetic pole; and a spin torque oscillator provided between the magnetic pole and the magnetic shield, and formed with a stack structure including a first magnetic layer, a second magnetic layer, and an intermediate layer interposed between the first magnetic layer and the second magnetic layer. The first magnetic layer is made of a magnetic material of 200 Oe or smaller in coercive force. A cross-sectional area of the first magnetic layer in a direction perpendicular to a stack layer face of the first magnetic layer is four or more times greater than a cross-sectional area of the second magnetic layer in a direction perpendicular to a stack layer face of the second magnetic layer.
摘要翻译： 磁记录头包括：磁极; 与磁极形成磁路的磁屏蔽; 以及设置在所述磁极和所述磁屏蔽之间的自旋扭矩振荡器，并且形成有包括第一磁性层，第二磁性层和介于所述第一磁性层和所述第二磁性层之间的中间层的堆叠结构。 第一磁性层由矫顽力为200Oe或更小的磁性材料制成。 第一磁性层在与第一磁性层的堆叠层面垂直的方向上的横截面积比第二磁性层在垂直于堆叠层面的方向的横截面积大四倍以上 的第二磁性层。
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