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51. 发明授权

US07508626B2 Thin film magnetic head having magnetic pole with controlled dimensions 有权
标题翻译：具有受控尺寸的磁极的薄膜磁头
公开(公告)号：US07508626B2
公开(公告)日：2009-03-24
申请号：US10720478
申请日：2003-11-25
申请人： Shigeru Ichihara , Akihiro Oda , Tetsuya Roppongi , Naoto Matono
发明人： Shigeru Ichihara , Akihiro Oda , Tetsuya Roppongi , Naoto Matono
IPC分类号： G11B5/187
CPC分类号： G11B5/3116 , G11B5/3109 , G11B5/3113 , G11B5/3156 , G11B5/3967 , G11B5/455 , G11B2005/0013
摘要： The present invention provides a thin film magnetic head in which a magnetic domain structure of a magnetic pole layer is controlled and fluctuation in recording magnetization caused by leaked magnetic flux generated by unintentional shift of a magnetic domain wall can be prevented. When a length of a front end portion of a magnetic pole part layer, which specifies a recording track width of a recording medium, is set as D, and a width of an upper edge of a magnetic pole end surface, positioned on a medium outflow side, is set as W, a dimensional ratio D/W of the length D to the width W is set so as to lie within the range of 0
摘要翻译：本发明提供了一种薄磁头，其中磁极层的磁畴结构被控制，并且可以防止由磁畴壁的无意偏移产生的泄漏磁通引起的记录磁化的波动。当将指定记录介质的记录磁道宽度的磁极部分层的前端部分的长度设定为D时，将磁极端面的上边缘的宽度设置在介质流出一边设为W，将长度D与宽度W的尺寸比D / W设定在0

52. 发明授权

US07443633B2 Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head 有权
标题翻译：用于垂直磁记录的薄膜磁头和薄膜磁头的制造方法
公开(公告)号：US07443633B2
公开(公告)日：2008-10-28
申请号：US11300277
申请日：2005-12-15
申请人： Katsumichi Tagami , Tatsuya Harada , Hiroki Matsukuma , Tetsuya Roppongi , Susumu Aoki , Kazumasa Fukuda , Naoto Matono
发明人： Katsumichi Tagami , Tatsuya Harada , Hiroki Matsukuma , Tetsuya Roppongi , Susumu Aoki , Kazumasa Fukuda , Naoto Matono
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1872
摘要： A thin-film magnetic head with which an error rate is decreased due to a reduction of a jitter without significant decrease in write field, is provided. The head comprises at least one inductive write head element comprising: a main magnetic pole layer having an inner saturation magnetic flux density varying from both side end surfaces in a track-width direction and a leading end surface, toward a center portion in the track-width direction of a trailing end surface; an auxiliary magnetic pole layer; and at least one coil layer, a curvature width WC of a contour line of a write field adjacent to a trailing edge on an ABS side of the main magnetic pole layer satisfying the following expression: −0.15*WT≦WC
摘要翻译：提供了一种薄膜磁头，其由于抖动的减小而不会在写入场中显着降低而误差率降低。头包括至少一个感应写头元件，包括：主磁极层，具有从轨道宽度方向和前端表面的两个侧端面朝着轨道宽度方向的中心部分变化的内部饱和磁通密度，后端面的宽度方向; 辅助磁极层; 以及至少一个线圈层，与主磁极层的ABS侧的后缘相邻的写入场的轮廓线的曲率宽度W C C满足以下表达式：-0.15 * 其中W T是轨道宽度，W C的单位和 W N是纳米。

53. 发明授权

US07379268B2 Thin-film magnetic head including non-magnetic layer for maintaining flatness of the top surface of pole portion layer 失效
标题翻译：包括非磁性层的薄膜磁头，用于保持磁极部分层的顶表面的平坦度
公开(公告)号：US07379268B2
公开(公告)日：2008-05-27
申请号：US09985604
申请日：2001-11-05
申请人： Yoshikazu Sato , Tetsuya Roppongi , Yuichi Watabe
发明人： Yoshikazu Sato , Tetsuya Roppongi , Yuichi Watabe
IPC分类号： G11B5/31
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3909 , G11B5/3967 , G11B2005/3996 , Y10T29/49046
摘要： A thin-film magnetic head comprises first and second magnetic layers, a gap layer provided between the first and second magnetic layers, a coupling portion for magnetically coupling the first and second magnetic layers to each other at a distance from a medium facing surface ABS, and a thin-film coil, part of which is disposed between the first and second magnetic layers. The second magnetic layer has a pole portion layer and a yoke portion layer. The thin-film magnetic head further comprises a non-magnetic layer that is in contact with the surface of the pole portion layer farther from the gap layer. The non-magnetic layer prevents the surface of the pole portion layer farther from the gap layer from being damaged during the manufacturing process of the head, and thereby maintains the flatness of the surface.
摘要翻译：薄膜磁头包括第一和第二磁性层，设置在第一和第二磁性层之间的间隙层，用于将第一和第二磁性层相对于介质面向表面ABS一定距离地磁耦合的耦合部分，以及薄膜线圈，其一部分设置在第一和第二磁性层之间。第二磁性层具有磁极部分层和磁轭部分层。所述薄膜磁头还包括非磁性层，所述非磁性层与所述磁极部分层的离所述间隙层更远的表面接触。非磁性层防止在磁头的制造过程中离开间隙层的磁极部分层的表面被损坏，从而保持表面的平坦度。

54. 发明授权

US07245454B2 Magnetic head for vertical magnetic recording including main pole layer having varying width and thickness, head gimbal assembly, and hard disk drive 有权
标题翻译：用于垂直磁记录的磁头，包括具有不同宽度和厚度的主极层，磁头万向架组件和硬盘驱动器
公开(公告)号：US07245454B2
公开(公告)日：2007-07-17
申请号：US10832274
申请日：2004-04-27
申请人： Susumu Aoki , Yasuyuki Notsuke , Yuichi Watabe , Norikazu Ota , Tetsuya Roppongi
发明人： Susumu Aoki , Yasuyuki Notsuke , Yuichi Watabe , Norikazu Ota , Tetsuya Roppongi
IPC分类号： G11B5/31 , G11B5/23
CPC分类号： G11B5/1278
摘要： A write head of a magnetic head for vertical magnetic recording comprises: a coil; a main pole layer that allows the magnetic flux corresponding to the magnetic field generated by the coil to pass therethrough and generates a write magnetic field; an auxiliary pole layer; a gap layer provided between the main pole layer and the auxiliary pole layer; and a yoke layer for magnetically coupling the main pole layer to the auxiliary pole layer. The main pole layer has a flat top surface. In the main pole layer the position in which the thickness starts to increase is located between the medium facing surface and the position in which the width starts to increase.
摘要翻译：用于垂直磁记录的磁头的写头包括：线圈; 主极层，其允许对应于由线圈产生的磁场的磁通量通过，并产生写入磁场; 辅助极层; 设置在主极层和辅助极层之间的间隙层; 以及用于将主极层磁耦合到辅助极层的磁轭层。主极层具有平坦的顶表面。在主极层中，厚度开始增加的位置位于介质相对表面和宽度开始增加的位置之间。

55. 发明授权

US07206166B2 Thin film magnetic head and method of manufacturing the same 失效
标题翻译：薄膜磁头及其制造方法
公开(公告)号：US07206166B2
公开(公告)日：2007-04-17
申请号：US10638366
申请日：2003-08-12
申请人： Yasuyuki Notsuke , Akihiro Oda , Tetsuya Roppongi
发明人： Yasuyuki Notsuke , Akihiro Oda , Tetsuya Roppongi
IPC分类号： G11B5/187
CPC分类号： G11B5/1871 , G11B5/012 , G11B5/1278 , G11B5/3116 , G11B5/313 , G11B2005/0029
摘要： Provided is a thin film magnetic head which enables both ensuring overwrite characteristics and preventing an adverse effect resulting from side erase, such as degradation in an output signal. An exposed surface of a magnetic pole portion layer is configured to have the shape of an asymmetric inverted trapezoid corresponding to a remaining region which remains after removing a width increasing region in the shape of a right triangle from a rectangular region on the side of a side edge. The side edge of the exposed surface is caused to correspond to the side on which a magnetic flux emitted from the magnetic pole portion layer onto a target track of a hard disk causes information to unintentionally overwrite existing information recorded on an adjacent track. This configuration allows preventing the exposed surface from extending to the adjacent track, thus preventing the adverse effect resulting from side erase.
摘要翻译：提供一种薄膜磁头，其能够确保重写特性并且防止由于诸如输出信号的劣化的侧面擦除引起的不利影响。磁极部分层的暴露表面被配置为具有对应于从侧面侧面的矩形区域去除直角三角形形状的宽度增加区域后剩余的剩余区域的不对称倒梯形的形状边缘。导致暴露表面的侧边缘对应于从磁极部分层发射到硬盘的目标轨道上的磁通使信息无意地覆盖记录在相邻轨道上的现有信息的一侧。这种构造允许防止暴露的表面延伸到相邻的轨道，从而防止由侧面擦除引起的不利影响。

56. 发明授权

US06952325B2 Thin film magnetic head and method of manufacturing the same 有权
标题翻译：薄膜磁头及其制造方法
公开(公告)号：US06952325B2
公开(公告)日：2005-10-04
申请号：US10318153
申请日：2002-12-13
申请人： Yoshikazu Sato , Yuko Motegi , Tetsuya Roppongi , Yasuyuki Notsuke
发明人： Yoshikazu Sato , Yuko Motegi , Tetsuya Roppongi , Yasuyuki Notsuke
IPC分类号： G11B5/31 , G11B5/39 , G11B5/187
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3163 , G11B5/3967
摘要： Provided is a thin film magnetic head capable of ensuring the strength of a perpendicular magnetic field and improving recording performance. A bottom pole portion layer and a top pole portion layer constituting a part of a main magnetic pole are formed so that a cross sectional area of a complex including front end portions of the bottom pole portion layer and the top pole portion layer is smaller than a cross sectional area of a complex including rear end portions thereof, and a width of a top edge in an exposed surface is larger than a width of a bottom edge, and is equal to or larger than a width of the exposed surface in a middle position between the top edge and the bottom edge. In recording, magnetic fluxes flowing in a main magnetic pole are focused toward an air bearing surface, and are concentrated on the front end portion of the top pole portion layer which is a main emitting portion of the magnetic fluxes, so sufficient magnetic fluxes can be supplied to the air bearing surface.
摘要翻译：提供一种能够确保垂直磁场的强度并提高记录性能的薄膜磁头。形成构成主磁极的一部分的底极部分层和顶极部分层，使得包括底极部分层和顶极部分层的前端部分的复合物的截面积小于包括其后端部分的复合体的横截面积和暴露表面中的顶部边缘的宽度大于底部边缘的宽度，并且等于或大于在中间位置的暴露表面的宽度在顶边和底边之间。在记录中，在主磁极中流动的磁通量朝向空气轴承表面聚焦，并且集中在作为磁通量的主要发射部分的顶极部分层的前端部分上，因此足够的磁通量可以供应到空气轴承表面。

57. 发明授权

US06850390B2 Thin-film magnetic head and method of manufacturing same 失效
标题翻译：薄膜磁头及其制造方法
公开(公告)号：US06850390B2
公开(公告)日：2005-02-01
申请号：US09985611
申请日：2001-11-05
申请人： Yoshikazu Sato , Yuichi Watabe , Tetsuya Roppongi
发明人： Yoshikazu Sato , Yuichi Watabe , Tetsuya Roppongi
IPC分类号： G11B5/127 , G11B5/31 , G11B5/39 , G11B5/147 , G11B5/23
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/1278 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3163 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： A thin-film magnetic head comprises first and second magnetic layers; a gap layer provided between the first and second magnetic layers; a coupling portion for magnetically coupling the first magnetic layer and the second magnetic layer to each other at a distance from the medium facing surface ABS; and a thin-film coil at least part of which is disposed between the first and second magnetic layers. The second magnetic layer has a pole portion layer and a yoke portion layer. The pole portion layer has a saturated magnetic flux density equal to or greater than that of the yoke portion layer. The yoke portion layer magnetically connects the upper end of the coupling portion and the rear end surface of the pole portion layer to each other.
摘要翻译：薄膜磁头包括第一和第二磁性层; 间隔层，设置在第一和第二磁性层之间; 耦合部分，用于将第一磁性层和第二磁性层在与介质相对表面ABS相距一定距离处彼此磁耦合; 以及薄膜线圈，其至少一部分设置在第一和第二磁性层之间。第二磁性层具有磁极部分层和磁轭部分层。磁极部分层的饱和磁通密度等于或大于磁轭部分层的饱和磁通密度。轭部分层将耦合部分的上端和极部分层的后端表面彼此磁连接。

58. 发明授权

US11514931B1 Magnetic head including main pole having top surface including first inclined portion, second inclined portion, and third inclined portion, and spin torque oscillator 有权
公开(公告)号：US11514931B1
公开(公告)日：2022-11-29
申请号：US17677326
申请日：2022-02-22
申请人： Hironori Araki , Yoshitaka Sasaki , Tetsuhito Shinohara , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Yukinori Ikegawa , Tetsuya Roppongi
发明人： Hironori Araki , Yoshitaka Sasaki , Tetsuhito Shinohara , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Yukinori Ikegawa , Tetsuya Roppongi
IPC分类号： G11B5/31 , G11B5/127 , G11B5/39 , G11B5/235 , G11B5/00
摘要： A magnetic head includes a main pole, a trailing shield, and a spin torque oscillator. A top surface of the main pole includes a first inclined portion, a second inclined portion, and a third inclined portion arranged in order of closeness to a medium facing surface. Each of the first to third inclined portions has a front end closest to the medium facing surface and a rear end farthest from the medium facing surface. Each of the first to third inclined portions is inclined relative to the medium facing surface and a direction orthogonal to the medium facing surface so that its rear end is located forward relative to its front end in a direction of travel of a recording medium.

59. 发明授权

US11289117B1 Magnetic head including spin torque oscillator 有权
公开(公告)号：US11289117B1
公开(公告)日：2022-03-29
申请号：US17170126
申请日：2021-02-08
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Tetsuya Roppongi , Tetsuhito Shinohara , Ying Liu , Min Li , Alain Truong , Yuhui Tang , Wenyu Chen
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Tetsuya Roppongi , Tetsuhito Shinohara , Ying Liu , Min Li , Alain Truong , Yuhui Tang , Wenyu Chen
IPC分类号： G11B5/23 , G11B5/115 , G11B5/39 , G11B5/00
摘要： A magnetic head includes a medium facing surface, a main pole, a trailing shield, and a spin torque oscillator. A bottom surface of the trailing shield includes a first portion that includes an end located in the medium facing surface and is in contact with the spin torque oscillator at least in part. An element height that is a dimension of the spin torque oscillator in a direction perpendicular to the medium facing surface and a writer height that is a dimension of the first portion in the direction perpendicular to the medium facing surface are different from each other.

60. 发明授权

US10748559B1 Magnetic head including spin torque oscillator and manufacturing method for the same 有权
公开(公告)号：US10748559B1
公开(公告)日：2020-08-18
申请号：US16801399
申请日：2020-02-26
申请人： Hironori Araki , Yoshitaka Sasaki , Hiroyuki Ito , Yoji Nomura , Shigeki Tanemura , Kazuki Sato , Tetsuya Roppongi , Atsushi Yamaguchi
发明人： Hironori Araki , Yoshitaka Sasaki , Hiroyuki Ito , Yoji Nomura , Shigeki Tanemura , Kazuki Sato , Tetsuya Roppongi , Atsushi Yamaguchi
IPC分类号： G11B5/127 , G11B5/31 , G11B5/02 , G11B5/235
摘要： A magnetic head includes a main pole, a trailing shield, a spin torque oscillator, and a buffer layer. The buffer layer is interposed between the main pole and the spin torque oscillator. The spin torque oscillator has first and second side surfaces. The first and second side surfaces respectively form first and second angles with respect to a direction perpendicular to a top surface of a substrate. The first and second angles each fall within a range of 0° to 10°. The buffer layer has third and fourth side surfaces. The third side surface includes a first inclined portion forming a third angle greater than the first angle. The fourth side surface includes a second inclined portion forming a fourth angle greater than the second angle.

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