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61. 发明申请

US20060245108A1 Flux shunt structure for reducing return pole corner fields in a perpendicular magnetic recording head 有权
公开(公告)号：US20060245108A1
公开(公告)日：2006-11-02
申请号：US11116677
申请日：2005-04-27
申请人： Yimin Hsu , Quang Le , Roger Wood
发明人： Yimin Hsu , Quang Le , Roger Wood
IPC分类号： G11B5/127
CPC分类号： G11B5/315 , G11B5/1278 , G11B5/3116 , G11B5/3146
摘要： A magnetic head for use in a perpendicular recording system having a novel shield structure that provides exceptional magnetic shielding from extraneous magnetic fields such as from a write coil, shaping layer or return pole of the write head. The magnetic head includes a write pole, a return pole and a magnetic shield that is magnetically connected with the return pole near the ABS and extends toward the write pole. The shield is formed with a notch at its edge closest to the write pole. The notch assures adequate physical, magnetic, and electrical separation between the write pole and the shield, while allowing un-notched portions of the shield to provide additional magnetic shielding.

62. 发明申请

US20060092565A1 Notched shield and pole structure with slanted wing for perpendicular recording 有权
标题翻译：具有垂直记录的倾斜翼的缺口盾和杆结构
公开(公告)号：US20060092565A1
公开(公告)日：2006-05-04
申请号：US10976479
申请日：2004-10-29
申请人： Kuok Ho , Yimin Hsu , Ching Tsang
发明人： Kuok Ho , Yimin Hsu , Ching Tsang
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/398
摘要： A magnetic structure for use in a magnetic head for avoiding stray field writing. The magnetic structure can be for example a magnetic shield or could be a magnetic pole of a write head and is particularly advantageous for use in a perpendicular recording system, because such perpendicular recording systems are especially susceptible to stray field writing. The magnetic structure includes a forward protruding portion that extends toward the air bearing surface (ABS) of the head also includes first and second wing portions that extend laterally from the forward protruding portion. The wing portions each have a front edge that is recessed from the ABS. The wings are tapered so that the amount of recess of the front edge of the wings increases with lateral distance from the center of the magnetic structure.
摘要翻译：用于磁头的磁结构，用于避免杂散场写入。磁性结构可以是例如磁屏蔽或者可以是写入磁头的磁极，并且对于在垂直记录系统中使用是特别有利的，因为这样的垂直记录系统特别容易受到杂散磁场写入的影响。磁性结构包括朝向头部的空气支承表面（ABS）延伸的向前突出部分还包括从前突出部分横向延伸的第一和第二翼部分。翼部各自具有从ABS凹入的前边缘。翅膀是锥形的，使得翼的前边缘的凹部的数量随着与磁性结构的中心的横向距离而增加。

63. 发明授权

US06975485B2 Thin film magnetic recording inductive write head with laminated write gap 有权
标题翻译：薄膜磁记录感应写头与层压写入间隙
公开(公告)号：US06975485B2
公开(公告)日：2005-12-13
申请号：US10890658
申请日：2004-07-13
申请人： Yimin Hsu , Ching Hwa Tsang
发明人： Yimin Hsu , Ching Hwa Tsang
IPC分类号： G11B5/00 , G11B5/09 , G11B5/187 , G11B5/23 , G11B5/31 , G11B5/39 , G11B5/48 , G11B5/127
CPC分类号： G11B5/3116 , G11B5/09 , G11B5/187 , G11B5/23 , G11B5/313 , G11B5/3143 , G11B5/3146 , G11B5/3967 , G11B5/488 , G11B2005/001 , G11B2005/0013 , G11B2005/0026
摘要： A thin film inductive write head for magnetic recording has a write gap formed as a lamination of alternating layers of a nonmagnetic gap layer and a ferromagnetic spacer layer. There are N gap layers and N−1 spacer layers, with each pole tip of the write head being located adjacent to a gap layer. The spacer layers in the gap structure are formed of a ferromagnetic material with a high saturation moment density (BS) that is close to the BS of the spacer material from which the pole tips are formed. Unlike the pole tips, the spacer layers are not part of a magnetic circuit and are magnetically isolated, i.e., completely surrounded by nonmagnetic gap material. The effect of the spacer layers is to effectively divide the gap into a plurality of smaller gaps. The write head with the laminated gap creates a write bubble that is narrower in the off-track direction and wider in the in-track direction.
摘要翻译：用于磁记录的薄膜感应写头具有形成为非磁性间隙层和铁磁间隔层的交替层的叠层的写间隙。存在N个间隙层和N-1间隔层，写头的每个极尖位于邻近间隙层的位置。间隙结构中的间隔层由具有高的饱和力矩密度（B SUB S S）的铁磁材料形成，该高铁磁性材料接近间隔材料的B S S，形成极尖。与极尖不同，间隔层不是磁路的一部分，并且是磁隔离的，即被非磁性间隙材料完全包围。间隔层的作用是将间隙有效地分成多个较小间隙。具有层压间隙的写头产生在偏离磁道方向上较窄的写入气泡，并且在轨道内方向上较宽。

64. 发明申请

US20050068678A1 Head for perpendicular magnetic recording with a shield structure connected to the return pole piece 有权
标题翻译：磁头垂直磁记录，屏蔽结构连接到返回极片
公开(公告)号：US20050068678A1
公开(公告)日：2005-03-31
申请号：US10676742
申请日：2003-09-30
申请人： Yimin Hsu , Quang Le , James Nix , Mason Williams
发明人： Yimin Hsu , Quang Le , James Nix , Mason Williams
IPC分类号： G11B5/187 , G11B5/00 , G11B5/11 , G11B5/127 , G11B5/147 , G11B5/31
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/315 , G11B2005/0029
摘要： An embodiment of the invention is a head for perpendicular recording that has a trailing shield and side shields that are connected to the return pole piece by two studs of ferromagnetic material. The studs extend parallel to the track direction and are located a sufficient distance away from the main pole piece to reduce the flux flow from the main pole piece to the studs. Optionally the studs can be recessed behind the air-bearing surface. The preferred embodiment of the invention is a magnetic transducer with separated read and write heads for perpendicular recording.
摘要翻译：本发明的一个实施例是用于垂直记录的头部，其具有通过两个铁磁材料柱连接到返回极片的后屏蔽和侧屏蔽。螺柱平行于轨道方向延伸，并且距离主极片足够远的距离，以减少从主极片到螺柱的通量流。可选地，螺柱可以凹入空气轴承表面后面。本发明的优选实施例是具有分离的用于垂直记录的读写头的磁性换能器。

65. 发明授权

US06259583B1 Laminated yoke head with a domain control element 失效
标题翻译：具有域控制元件的层叠轭头
公开(公告)号：US06259583B1
公开(公告)日：2001-07-10
申请号：US09154527
申请日：1998-09-16
申请人： Robert Edward Fontana, Jr. , Yimin Hsu , Prakash Kasiraj , Mason Lamar Williams
发明人： Robert Edward Fontana, Jr. , Yimin Hsu , Prakash Kasiraj , Mason Lamar Williams
IPC分类号： G11B5147
CPC分类号： G11B5/3153 , G11B5/3113 , G11B5/3156
摘要： The present invention is a magnetic head which has a preferably planar pole member having a yoke and a tip with a first planar pole P1 and a second planar pole P2 positioned above pole P1. The pole member is built up of two types of layers: a first type of layer with high magnetic permeability &mgr; and low anisotropy Hk, with the easy axis oriented substantially perpendicular to the flux propagation direction to ensure rapid response, and a second layer type which is non-magnetic. The magnetic head also has a domain control element whose magnetization in the vicinity of the pole tip P2 and in the absence of applied field is aligned along the length of the element so as to facilitate the conduction of flux between poles P1 and P2. The domain control element can be a non-laminated element made of a material with high saturation magnetization MS such as NiFe, Ni80Fe20, Ni45Fe55, NiFeCo, FeCo, CoZrNb, FeAlN and FeTaN and proper dimensioning of the element further increases the flux conduction efficiency.
摘要翻译：本发明是一种磁头，其具有优选的具有磁轭的平面磁极部件和具有位于磁极P1上方的第一平面磁极P1和第二平面磁极P2的末端。极构件由两种类型的层构成：具有高磁导率μm和低各向异性H k的第一类型的层，易轴定向为基本上垂直于磁通传播方向，以确保快速响应，以及第二层类型是非磁性的。磁头还具有域控制元件，其磁极尖端P2附近的磁化和不存在施加磁场的磁化沿着元件的长度排列，以便于磁极P1和P2之间的磁通传导。域控制元件可以是由诸如NiFe，Ni80Fe20，Ni45Fe55，NiFeCo，FeCo，CoZrNb，FeAlN和FeTaN的高饱和磁化MS的材料制成的非层叠元件，并且元件的适当尺寸进一步增加了通量传导效率。

66. 发明授权

US08441757B2 Perpendicular magnetic write head with wrap-around shield, slanted pole and slanted pole bump fabricated by damascene process 有权
标题翻译：垂直磁写头与环绕屏蔽，倾斜极和通过镶嵌工艺制造的倾斜极柱
公开(公告)号：US08441757B2
公开(公告)日：2013-05-14
申请号：US12634456
申请日：2009-12-09
申请人： Yingjian Chen , Liubo Hong , Yimin Hsu , Edward Hin Pong Lee , Katalin Pentek
发明人： Yingjian Chen , Liubo Hong , Yimin Hsu , Edward Hin Pong Lee , Katalin Pentek
IPC分类号： G11B5/11 , G11B5/187
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B5/315
摘要： A magnetic write head having a write pole with a tapered trailing edge. The write head has a non-magnetic step layer and a non-magnetic bump formed on the front edge of the magnetic step layer. A non-magnetic trailing gap layer is formed over the tapered trailing edge of the write pole and over the non-magnetic bump and over the non-magnetic step layer. A magnetic trailing shield is formed over at least a portion of the non-magnetic gap layer.
摘要翻译：一种具有具有锥形后缘的写极的磁写头。写头具有形成在磁性阶梯层的前边缘上的非磁性阶梯层和非磁性凸块。非磁性拖尾间隙层形成在写磁极的锥形后缘和非磁性凸块之上以及非磁性阶梯层之上。在非磁隙层的至少一部分上形成有磁性后屏蔽。

67. 发明申请

US20120154954A1 PERPENDICULAR MAGNETIC WRITE HEAD HAVING A LAMINATED TRAILING RETURN POLE 有权
标题翻译：具有层叠式追踪返回点的全磁性磁头
公开(公告)号：US20120154954A1
公开(公告)日：2012-06-21
申请号：US12975121
申请日：2010-12-21
申请人： Wen-Chien D. Hsiao , Yimin Hsu , Jennifer Leung
发明人： Wen-Chien D. Hsiao , Yimin Hsu , Jennifer Leung
IPC分类号： G11B5/127 , G11B21/16 , G11B5/187 , G11B5/147
CPC分类号： G11B5/1278 , G11B5/315 , Y10T428/1186
摘要： A perpendicular magnetic write head having a laminated trailing return pole structure that reduces magnetic eddy currents in the return pole for improved write head efficiency. The trailing magnetic return pole includes multiple magnetic layers. Each magnetic layer is separated from an adjacent magnetic layer of the return pole by a non-magnetic layer. The non-magnetic layer terminates at a region that is removed from the air bearing surface in order to allow contact between the magnetic layers at the ABS, thereby preventing stray magnetic fields from emitting from the magnetic layers of the write pole.
摘要翻译：具有层叠后退磁极结构的垂直磁性写头，其减小返回极中的磁涡流，以提高写头效率。尾磁回极包括多个磁性层。每个磁性层通过非磁性层与返回极的相邻磁性层分离。非磁性层终止于从空气轴承表面移除的区域，以便允许ABS处的磁性层之间的接触，从而防止杂散磁场从写入磁极的磁性层发射。

68. 发明申请

US20110134568A1 PMR WRITER AND METHOD OF FABRICATION 有权
标题翻译： PMR WRITER和制造方法
公开(公告)号：US20110134568A1
公开(公告)日：2011-06-09
申请号：US12634514
申请日：2009-12-09
申请人： YINGJIAN CHEN , Liubo Hong , Yimin Hsu
发明人： YINGJIAN CHEN , Liubo Hong , Yimin Hsu
IPC分类号： G11B5/10
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B5/3163 , Y10T29/49048
摘要： Methods for fabrication of tapered magnetic poles with a non-magnetic front bump layer. A magnetic pole may have a tapered surface at or near an air bearing surface (ABS), wherein a thickness of the write pole increases in a direction away from the ABS. A non-magnetic front bump layer may be formed on the tapered surface of the magnetic pole and away from the ABS. The front bump layer may increase the separation distance between a shield layer and the magnetic pole near the tapered surface, thereby improving the performance of the write head.
摘要翻译：用非磁性前凸块层制造锥形磁极的方法。磁极可以在空气轴承表面（ABS）处或附近具有锥形表面，其中写入极的厚度在远离ABS的方向上增加。可以在磁极的锥形表面上远离ABS形成非磁性前凸块层。前凸块层可以增加在锥形表面附近的屏蔽层和磁极之间的间隔距离，从而提高写入头的性能。

69. 发明申请

US20110120878A1 METHOD FOR MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD HAVING A TAPERED WRITE POLE AND NON-MAGNETIC BUMP STRUCTURE 有权
标题翻译：用于制造具有锥形写入点和非磁性结构的贯通磁头写头的方法
公开(公告)号：US20110120878A1
公开(公告)日：2011-05-26
申请号：US12623206
申请日：2009-11-20
申请人： Liubo Hong , Wen-Chien D. Hsiao , Yimin Hsu , Yi Zheng
发明人： Liubo Hong , Wen-Chien D. Hsiao , Yimin Hsu , Yi Zheng
IPC分类号： C23C14/34 , C25D5/34
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3143 , G11B5/315 , G11B5/3163 , Y10T29/49048
摘要： A method for manufacturing a magnetic write head having a write pole and a trailing wrap around magnetic shield, and having a non-magnetic step layer and a non-magnetic bump to provide additional spacing between the write pole and the trailing wrap around shield at a location removed from the air bearing surface. A magnetic write pole material is deposited on a substrate and a non-magnetic step layer is deposited over the write pole. A reactive ion milling can he used to pattern the non-magnetic step layer to have a front edge that is located a desired distance from an air hearing surface. A patterning and ion milling process is then performed to define a write pole, and then a layer of alumina is deposited and ion milled to from a tapered, non-magnetic bump at the front the non-magnetic step layer.
摘要翻译：一种用于制造磁性写入头的方法，该写入磁头在磁屏蔽周围具有写入磁极和尾部缠绕，并且具有非磁性阶跃层和非磁性凸起，以在写入磁极和屏蔽之间的后续缠绕在一个位置从空气轴承表面移除。磁性写入极材料沉积在衬底上，非磁性步骤层沉积在写入极上。他可以使用反应离子研磨来对非磁性阶梯层进行图案化以具有位于距离空气听力表面所需距离的前边缘。然后进行图形化和离子研磨处理以限定写入极，然后沉积氧化铝层，并从非磁性阶梯层前面的锥形非磁性凸块离子研磨。

70. 发明授权

US07768744B2 Perpendicular magnetic recording write head with coplanar main pole and return poles and magnetic recording system 有权
标题翻译：垂直磁记录头与共平面的主极和返回极和磁记录系统
公开(公告)号：US07768744B2
公开(公告)日：2010-08-03
申请号：US11743150
申请日：2007-05-02
申请人： Wen-Chien David Hsiao , Yimin Hsu , Edward Hin Pong Lee , Vladimir Nikitin
发明人： Wen-Chien David Hsiao , Yimin Hsu , Edward Hin Pong Lee , Vladimir Nikitin
IPC分类号： G11B5/147 , G11B5/17
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/3123 , G11B5/3146 , G11B5/315
摘要： A perpendicular magnetic recording write head has a main pole and return poles that are substantially coplanar. The write head includes a main pole, two return poles and a connecting stud that are all formed as a single layer in a single deposition and patterning step. The coplanar main and return poles lie in a plane parallel to the cross-track direction. The two return poles are thus spaced from the main pole in the cross-track direction. The main pole includes a write pole connected to it but lying in a plane spaced in the along-the-track direction from the plane of the main pole. The write head includes a helical coil wrapped around the main pole. The magnetic flux path is from the write pole to the disk recording layer in a data track aligned with the write pole, to the disk underlayer beneath the recording layer, through the underlayer to data tracks spaced cross-track from the data track aligned with the write pole, and back through the return poles.
摘要翻译：垂直磁记录写头具有基本上共面的主极和返回极。写头包括在单个沉积和图案化步骤中都形成为单层的主极，两个返回极和连接柱。共平面的主极和返回极位于平行于交叉轨道方向的平面中。因此，两个返回极在交叉轨道方向上与主极间隔开。主极包括连接到其上的写入极，但是位于沿主轨方向与主极平面间隔开的平面中。写头包括缠绕在主极上的螺旋线圈。磁通路径是从记录磁极对准的数据磁道中的写入磁极到磁盘记录层，到记录层下方的磁盘底层，通过底层到从与数据磁道对准的数据磁道间隔开的数据磁道写柱，并通过返回杆返回。

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