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1.发明授权Perpendicular magnetic recording element having stacked FM and AFM films applying magnetic bias along easy axis of soft magnetic film 有权具有堆叠的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。
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2.发明申请公开(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
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。
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公开(公告)号：US20070279803A1
公开(公告)日：2007-12-06
申请号：US11756134
申请日：2007-05-31
申请人： Kei Hirata , Tetsuya Roppongi , Kiyoshi Noguchi
发明人： Kei Hirata , Tetsuya Roppongi , Kiyoshi Noguchi
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , B82Y10/00 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/743
摘要： The invention provides a thin-film magnetic head wherein the combined release angle Φ for a dominant recording magnetic field generated from a magnetic pole layer toward a patterned media for the purpose of recording magnetic information is set to within an angle range of 35° to 65° with respect to a patterned media surface. It is thus possible to invert, with efficiency and reliability, the directions of magnetization of isolate bits lined up on the patterned media for high-density recording.
摘要翻译： 本发明提供了一种薄膜磁头，其中用于记录磁信息的从磁极层向图案化介质产生的主要记录磁场的组合释放角Phi设定在35°至65°的角度范围内 °相对于图案化介质表面。 因此，可以以效率和可靠性反转排列在图案化介质上的高密度记录的隔离位的磁化方向。
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4.发明授权Thin-film magnetic head having a recording head portion configured to record magnetic information on a patterned media, head gimbal assembly, and hard disk system 有权具有记录头部分的薄膜磁头被配置为在图案化介质，磁头万向节组件和硬盘系统上记录磁信息公开(公告)号：US07872831B2
公开(公告)日：2011-01-18
申请号：US11756134
申请日：2007-05-31
申请人： Kei Hirata , Tetsuya Roppongi , Kiyoshi Noguchi
发明人： Kei Hirata , Tetsuya Roppongi , Kiyoshi Noguchi
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , B82Y10/00 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/743
摘要： The invention provides a thin-film magnetic head wherein the combined release angle Φ for a dominant recording magnetic field generated from a magnetic pole layer toward a patterned media for the purpose of recording magnetic information is set to within an angle range of 35° to 65° with respect to a patterned media surface. It is thus possible to invert, with efficiency and reliability, the directions of magnetization of isolate bits lined up on the patterned media for high-density recording.
摘要翻译： 本发明提供了一种薄膜磁头，其中用于记录磁信息的从磁极层向图案化介质产生的主要记录磁场的组合释放角Φ设定在35°至65°的角度范围内 °相对于图案化介质表面。 因此，可以以效率和可靠性反转排列在图案化介质上的高密度记录的隔离位的磁化方向。
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5.发明授权Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive 有权用于垂直磁记录的磁头，磁头万向架组件，磁头臂组件和磁盘驱动器公开(公告)号：US07463449B2
公开(公告)日：2008-12-09
申请号：US11266289
申请日：2005-11-04
CPC分类号： G11B5/1278 , G11B5/3113 , G11B5/3116
摘要： A pole layer incorporate a track width defining and a wide portion. A material forming the pole layer is an alloy whose major elements are iron and nickel. In the alloy, where the proportions of iron and nickel with respect to the total of iron and nickel are indicated as (100−M) weight % and M weight %, respectively, M is greater than 0 and smaller than or equal to 10. The internal stress of the pole layer is a tensile stress. The magnetostriction constant of the material forming the pole layer is positive. Where the anisotropy field of the pole layer is Hk (A/m), the magnetostriction constant of the material forming the pole layer is λ(×10−6), and the internal stress of the pole layer is σ (MPa), the value of Hk/(λ×σ) is greater than 0.01 and smaller than 0.2.
摘要翻译： 极层包含限定的轨道宽度和宽的部分。 形成极层的材料是其主要元素是铁和镍的合金。 在合金中，铁和镍相对于铁和镍总量的比例分别表示为（100-M）重量％和M重量％，M大于0且小于或等于10。 极层的内应力是拉伸应力。 形成极层的材料的磁致伸缩常数为正。 在极层的各向异性场为Hk（A / m）的情况下，形成极层的材料的磁致伸缩常数为λ（x10-6），极层的内应力为σ（MPa） 的Hk /（lambdaxsigma）大于0.01且小于0.2。
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公开(公告)号：US07312951B2
公开(公告)日：2007-12-25
申请号：US11038390
申请日：2005-01-21
CPC分类号： G11B5/1278 , Y10T428/115 , Y10T428/1186
摘要： The invention provides a magnetic head for perpendicular magnetic recording having an air bearing surface positioned facing the recording surface of a recording medium, which records magnetic information on the recording medium by generating magnetic flux toward the recording surface of the recording medium, and comprises a magnetic pole which generates magnetic flux toward the recording surface of the recording medium and a return yoke having one end connected to the magnetic pole and the other end positioned facing the recording surface of the recording medium, wherein the material composing the magnetic pole has a magnetostriction constant λ of at least 0 and less than 10×10−6, with a parameter P represented by the formula: P=Hk/(λ×σ) (where Hk represents the magnetic anisotropic field (A/m), σ represents the stress (MPa) and λ represents the magnetostriction constant) of larger than 0.1 and less than 200.
摘要翻译： 本发明提供了一种用于垂直磁记录的磁头，其具有面向记录介质的记录表面的空气轴承表面，其通过向记录介质的记录表面产生磁通量而将磁信息记录在记录介质上，并且包括磁 向记录介质的记录表面产生磁通的磁极和一个与磁极相连的一端的返回磁轭和面对记录介质的记录表面的另一端，其中构成磁极的材料具有磁致伸缩常数 λ至少为0且小于10×10 -6，具有由以下公式表示的参数P：P = Hk /（lambdaxsigma）（其中Hk表示磁各向异性场（A / m），σ 表示应力（MPa），λ表示磁致伸缩常数）大于0.1且小于200。
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7.发明申请Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive 有权用于垂直磁记录的磁头，磁头万向架组件，磁头臂组件和磁盘驱动器公开(公告)号：US20060098335A1
公开(公告)日：2006-05-11
申请号：US11266289
申请日：2005-11-04
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3113 , G11B5/3116
摘要： A pole layer incorporate a track width defining and a wide portion. A material forming the pole layer is an alloy whose major elements are iron and nickel. In the alloy, where the proportions of iron and nickel with respect to the total of iron and nickel are indicated as (100-M) weight % and M weight %, respectively, M is greater than 0 and smaller than or equal to 10. The internal stress of the pole layer is a tensile stress. The magnetostriction constant of the material forming the pole layer is positive. Where the anisotropy field of the pole layer is Hk (A/m), the magnetostriction constant of the material forming the pole layer is λ(×10−6), and the internal stress of the pole layer is σ (MPa), the value of Hk/(λ×σ) is greater than 0.01 and smaller than 0.2.
摘要翻译： 极层包含限定的轨道宽度和宽的部分。 形成极层的材料是其主要元素是铁和镍的合金。 在合金中，铁和镍相对于铁和镍总量的比例分别表示为（100-M）重量％和M重量％，M大于0且小于或等于10。 极层的内应力是拉伸应力。 形成极层的材料的磁致伸缩常数为正。 在极层的各向异性场为Hk（A / m）的情况下，形成极层的材料的磁致伸缩常数为λ（×10 -6 -6），极层的内应力为 sigma（MPa），Hk /（lambdaxsigma）的值大于0.01且小于0.2。
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公开(公告)号：US20050286170A1
公开(公告)日：2005-12-29
申请号：US11038390
申请日：2005-01-21
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , Y10T428/115 , Y10T428/1186
摘要： The invention provides a magnetic head for perpendicular magnetic recording having an air bearing surface positioned facing the recording surface of a recording medium, which records magnetic information on the recording medium by generating magnetic flux toward the recording surface of the recording medium, and comprises a magnetic pole which generates magnetic flux toward the recording surface of the recording medium and a return yoke having one end connected to the magnetic pole and the other end positioned facing the recording surface of the recording medium, wherein the material composing the magnetic pole has a magnetostriction constant λ of at least 0 and less than 10×10−6, with a parameter P represented by the formula: P=Hk/(λ×σ) (where Hk represents the magnetic anisotropic field (A/m), σ represents the stress (MPa) and λ represents the magnetostriction constant) of larger than 0.1 and less than 200.
摘要翻译： 本发明提供了一种用于垂直磁记录的磁头，其具有面向记录介质的记录表面的空气轴承表面，其通过向记录介质的记录表面产生磁通量而将磁信息记录在记录介质上，并且包括磁 向记录介质的记录表面产生磁通的磁极和一个与磁极相连的一端的返回磁轭和面对记录介质的记录表面的另一端，其中构成磁极的材料具有磁致伸缩常数 λ至少为0且小于10×10 -6，具有由以下公式表示的参数P：P = Hk /（lambdaxsigma）（其中Hk表示磁各向异性场（A / m），σ 表示应力（MPa），λ表示磁致伸缩常数）大于0.1且小于200。
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9.发明授权Thermally-assisted magnetic recording head including a plasmon generator and a magnetic pole 有权包括等离子体发生器和磁极的热辅助磁记录头公开(公告)号：US08503270B1
公开(公告)日：2013-08-06
申请号：US13456734
申请日：2012-04-26
申请人： Keita Kawamori , Kei Hirata , Tetsuya Roppongi
发明人： Keita Kawamori , Kei Hirata , Tetsuya Roppongi
CPC分类号： G11B5/3133 , G11B5/314 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes a magnetic pole, a waveguide, and a plasmon generator. The plasmon generator and the magnetic pole are disposed to align in the direction of travel of a magnetic recording medium. The thermally-assisted magnetic recording head further includes an amorphous layer made of a nonmagnetic metal, the amorphous layer being interposed between and in contact with the plasmon generator and the magnetic pole.
摘要翻译： 热辅助磁记录头包括磁极，波导和等离子体发生器。 等离子体发生器和磁极设置成在磁记录介质的行进方向上对齐。 热辅助磁记录头还包括由非磁性金属制成的非晶层，该非晶层介于等离子体发生器和磁极之间并与其接触。
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10.发明授权Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device 有权薄膜磁头，头万向架组件，头臂组件和磁盘装置公开(公告)号：US07843667B2
公开(公告)日：2010-11-30
申请号：US11802219
申请日：2007-05-21
申请人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
发明人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/3912 , G11B5/3967 , G11B5/6064
摘要： Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
摘要翻译： 提供一种薄膜磁头，其能够抑制磁道擦除的发生，减少由由薄膜线圈产生的磁通引起的对磁阻元件的影响，并进一步降低寄生电容。 薄膜磁头沿堆叠方向依次具有第一磁屏蔽层，磁阻元件，第二磁屏蔽层，第三磁屏蔽层，主磁极层和返回磁轭层。 第一和第二磁屏蔽层中的至少一个的轨道宽度方向上的宽度小于第三磁屏蔽层和返回磁轭层的磁道宽度方向上的宽度。
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