专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08264916B1 Microwave assisted magnetic head and magnetic disk device 有权
标题翻译：微波辅助磁头和磁盘装置
公开(公告)号：US08264916B1
公开(公告)日：2012-09-11
申请号：US13045603
申请日：2011-03-11
申请人： Tsutomu Aoyama , Tetsuya Roppongi , Yoshikazu Soeno , Kiyoshi Noguchi , Isamu Sato
发明人： Tsutomu Aoyama , Tetsuya Roppongi , Yoshikazu Soeno , Kiyoshi Noguchi , Isamu Sato
IPC分类号： G11B11/00 , G11B27/36
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A microwave assisted magnetic head of the present invention includes: at least two or more auxiliary coils that are arranged in a periphery of a writing main pole; and microwave current supply means that applies microwave currents to the at least two or more auxiliary coils. The at least two or more auxiliary coils respectively include linear body parts linearly arranged on an ABS side, two of the linear body parts of the at least two or more auxiliary coils are arranged in a substantially orthogonal positional relationship, and the microwave current supply means is configured such that the microwave current supply means changes phase differences of the microwave currents applied respectively to the at least two or more auxiliary coils. Therefore, the microwave current can be easily controlled, and thus, a circularly polarized magnetic field with high magnetization inversion efficiency can be generated as an assistance magnetic field.
摘要翻译：本发明的微波辅助磁头包括：布置在书写主极的周边中的至少两个或更多个辅助线圈; 以及微波电流供给装置，其向所述至少两个或更多个辅助线圈施加微波电流。所述至少两个以上的辅助线圈分别包括直线状配置在ABS侧的线状体部，所述至少两个以上的辅助线圈的线状体部的两个以大致正交的位置关系配置，微波电流供给装置被配置为使得微波电流提供装置改变分别施加到至少两个或更多个辅助线圈的微波电流的相位差。因此，可以容易地控制微波电流，因此可以产生具有高磁化反转效率的圆极化磁场作为辅助磁场。

2. 发明申请

US20120230167A1 MICROWAVE ASSISTED MAGNETIC HEAD AND MAGNETIC DISK DEVICE 有权
标题翻译： MICROWAVE辅助磁头和磁性磁盘设备
公开(公告)号：US20120230167A1
公开(公告)日：2012-09-13
申请号：US13045603
申请日：2011-03-11
申请人： Tsutomu AOYAMA , Tetsuya Roppongi , Yoshikazu Soeno , Kiyoshi Noguchi , Isamu Sato
发明人： Tsutomu AOYAMA , Tetsuya Roppongi , Yoshikazu Soeno , Kiyoshi Noguchi , Isamu Sato
IPC分类号： G11B13/04
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A microwave assisted magnetic head of the present invention includes: at least two or more auxiliary coils that are arranged in a periphery of a writing main pole; and microwave current supply means that applies microwave currents to the at least two or more auxiliary coils. The at least two or more auxiliary coils respectively include linear body parts linearly arranged on an ABS side, two of the linear body parts of the at least two or more auxiliary coils are arranged in a substantially orthogonal positional relationship, and the microwave current supply means is configured such that the microwave current supply means changes phase differences of the microwave currents applied respectively to the at least two or more auxiliary coils. Therefore, the microwave current can be easily controlled, and thus, a circularly polarized magnetic field with high magnetization inversion efficiency can be generated as an assistance magnetic field.
摘要翻译：本发明的微波辅助磁头包括：布置在书写主极的周边中的至少两个或更多个辅助线圈; 以及微波电流供给装置，其向所述至少两个或更多个辅助线圈施加微波电流。所述至少两个以上的辅助线圈分别包括直线状配置在ABS侧的线状体部，所述至少两个以上的辅助线圈的线状体部的两个以大致正交的位置关系配置，微波电流供给装置被配置为使得微波电流提供装置改变分别施加到至少两个或更多个辅助线圈的微波电流的相位差。因此，可以容易地控制微波电流，因此可以产生具有高磁化反转效率的圆极化磁场作为辅助磁场。

3. 发明授权

US08300346B2 Microwave assisted magnetic head 有权
标题翻译：微波辅助磁头
公开(公告)号：US08300346B2
公开(公告)日：2012-10-30
申请号：US12750870
申请日：2010-03-31
申请人： Hiroshi Ikeda , Isamu Sato , Kiyoshi Noguchi , Tsutomu Aoyama , Takuya Adachi
发明人： Hiroshi Ikeda , Isamu Sato , Kiyoshi Noguchi , Tsutomu Aoyama , Takuya Adachi
IPC分类号： G11B5/02 , G11B5/127
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A gap between a main pole and auxiliary pole composing a thin film magnetic head having a microwave assisted function of the present invention is filled with a nonmagnetic dielectric layer to embed a microwave radiator. The nonmagnetic dielectric layer has an inclined surface at a end on a side of an opposing medium surface by which the microwave radiated from the microwave radiator to be bent toward the main pole, whereby the microwave magnetic field generated from the microwave generator can be gathered immediately below the main pole, further improving the microwave assisted effect.
摘要翻译：构成本发明的具有微波辅助功能的薄膜磁头的主极和辅助极之间的间隙填充有非磁性介电层以嵌入微波辐射器。非磁性介电层在相对的介质表面的一侧的端部具有倾斜表面，微波从微波辐射器辐射到微波辐射器，从而微波发生器产生的微波磁场可以立即收集主杆下方进一步提高微波辅助效果。

4. 发明申请

US20110242696A1 MICROWAVE ASSISTED MAGNETIC HEAD 有权
标题翻译： MICROWAVE辅助磁头
公开(公告)号：US20110242696A1
公开(公告)日：2011-10-06
申请号：US12750870
申请日：2010-03-31
申请人： Hiroshi IKEDA , Isamu Sato , Kiyoshi Noguchi , Tsutomu Aoyama , Takuya Adachi
发明人： Hiroshi IKEDA , Isamu Sato , Kiyoshi Noguchi , Tsutomu Aoyama , Takuya Adachi
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , G11B5/1278 , G11B2005/0024
摘要： A gap between a main pole and auxiliary pole composing a thin film magnetic head having a microwave assisted function of the present invention is filled with a nonmagnetic dielectric layer to embed a microwave radiator. The nonmagnetic dielectric layer has an inclined surface at a end on a side of an opposing medium surface by which the microwave radiated from the microwave radiator to be bent toward the main pole, whereby the microwave magnetic field generated from the microwave generator can be gathered immediately below the main pole, further improving the microwave assisted effect.
摘要翻译：构成本发明的具有微波辅助功能的薄膜磁头的主极和辅助极之间的间隙填充有非磁性介电层以嵌入微波辐射器。非磁性介电层在相对的介质表面的一侧的端部具有倾斜表面，微波从微波辐射器辐射到微波辐射器，从而微波发生器产生的微波磁场可以立即收集主杆下方进一步提高微波辅助效果。

5. 发明申请

US20070279803A1 THIN-FILM MAGNETIC HEAD, HEAD GIMBAL ASSEMBLY, AND HARD DISK SYSTEM 有权
标题翻译：薄膜磁头，头盖组件和硬盘系统
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。

6. 发明授权

US07872831B2 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
标题翻译：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。

7. 发明授权

US07463449B2 Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive 有权
标题翻译：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
申请人： Kei Hirata , Atsushi Yamaguchi , Tetsuya Roppongi , Kiyoshi Noguchi
发明人： Kei Hirata , Atsushi Yamaguchi , Tetsuya Roppongi , Kiyoshi Noguchi
IPC分类号： G11B5/31 , 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（x10-6），极层的内应力为σ（MPa）的Hk /（lambdaxsigma）大于0.01且小于0.2。

8. 发明授权

US07359146B2 Perpendicular magnetic recording element having stacked FM and AFM films applying magnetic bias along easy axis of soft magnetic film 有权
标题翻译：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。

9. 发明授权

US07312951B2 Magnetic head for perpendicular magnetic recording 有权
标题翻译：用于垂直磁记录的磁头
公开(公告)号：US07312951B2
公开(公告)日：2007-12-25
申请号：US11038390
申请日：2005-01-21
申请人： Kei Hirata , Kiyoshi Noguchi , Tetsuya Roppongi , Atsushi Yamaguchi
发明人： Kei Hirata , Kiyoshi Noguchi , Tetsuya Roppongi , Atsushi Yamaguchi
IPC分类号： G11B5/127 , G11B5/147 , G11B5/133 , G11B5/33
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。

10. 发明申请

US20060098335A1 Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive 有权
标题翻译：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
申请人： Kei Hirata , Atsushi Yamaguchi , Tetsuya Roppongi , Kiyoshi Noguchi
发明人： Kei Hirata , Atsushi Yamaguchi , Tetsuya Roppongi , Kiyoshi Noguchi
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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式