公开(公告)号：US08238059B1

公开(公告)日：2012-08-07

申请号：US13066095

申请日：2011-04-06

Applicant: Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

Inventor： Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

IPC: G11B5/127

CPC classification number: G11B5/1278 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163

Abstract: A PMR writer is disclosed wherein one or more of a trailing shield, leading shield, and side shields are composites with a first section made of an anisotropic (-Ku) magnetic layer adjoining a gap layer and a second section comprised of an isotropic soft magnetic layer formed on a side of the first section that faces away from the main pole. There may be a non-magnetic Ru layer between each first and second section to prevent interlayer coupling. Each first section has a hard axis in a direction toward the main pole and is comprised of hcp-CoIr, dhcp-CoFe, a′-Fe—C, or NiAs-type Mn50Sb50 with a thickness from 50 to 500 nm. As a result, flux leakage from the main pole to a shield structure is reduced and area density is increased. A method for fabricating a composite shield structure is also provided.

Abstract translation: 公开了一种PMR写入器，其中一个或多个后屏蔽，前屏蔽和侧屏蔽是与邻接间隙层的各向异性（-Ku）磁性层制成的第一部分和由各向同性软磁体组成的第二部分的复合材料 层形成在第一部分的远离主极的一侧上。 在每个第一和第二部分之间可以存在非磁性Ru层以防止层间耦合。 每个第一部分具有朝向主极的方向的硬轴，并且由厚度为50至500nm的hcp-CoIr，dhcp-CoFe，a'-Fe-C或NiAs型Mn50Sb50组成。 结果，从主极到屏蔽结构的磁通泄漏减少并且面积密度增加。 还提供了一种制造复合屏蔽结构的方法。

公开(公告)号：US07372665B1

公开(公告)日：2008-05-13

申请号：US11039635

申请日：2005-01-18

Applicant: Kroum S. Stoev ,  Suping Song ,  Tao Pan

Inventor： Kroum S. Stoev ,  Suping Song ,  Tao Pan

IPC: G11B5/147

CPC classification number: G11B5/6064 ,  G11B5/3133 ,  G11B5/607

Abstract: A magnetic head includes a slider body having a trailing surface meeting an air-bearing surface at a trailing edge, with a thin-film transducer disposed on the trailing surface of the slider body near the trailing edge. The thin-film transducer includes a coil embedded between first and second poles. A resistive heating element is disposed adjacent and electrically insulated from, the coil. Application of power to the resistive heating element causes expansion of at least the first and second poles.

Abstract translation: 磁头包括滑块主体，其具有在后缘处会合空气轴承表面的后表面，薄片换能器设置在靠近后缘的滑块体的后表面上。 薄膜换能器包括嵌入在第一和第二极之间的线圈。 电阻加热元件设置成与线圈相邻并与之电绝缘。 对电阻加热元件的电力施加导致至少第一和第二极的膨胀。

公开(公告)号：US20120257305A1

公开(公告)日：2012-10-11

申请号：US13066178

申请日：2011-04-08

Applicant: Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

Inventor： Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

IPC: G11B5/31 ,  G11B5/127

CPC classification number: G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49032

Abstract: A PMR writer is disclosed wherein a magnetic assist layer (MAL) made of an anisotropic (−Ku) or (+Ku) magnetic material is formed along a main pole trailing side to optimize the vertical magnetic field and field gradient at the air bearing surface. A Ru seed layer is formed between the main pole and (−Ku) MAL to induce a hard axis direction toward the main pole. A (−Ku) MAL is preferably comprised of hcp-CoIr while CoPt and FePt are examples of a (+Ku) MAL. The MAL has a down-track thickness from 5 to 20 nm, a width equal to the track width in a cross-track direction, and extends 100 to 500 nm in a direction toward a back end of the main pole. As a result, flux leakage from the main pole to trailing shield is reduced and aerial density is increased. A method for fabricating the PMR writer is provided.

Abstract translation: 公开了一种PMR写入器，其中沿着主极后方形成由各向异性（-Ku）或（+ Ku）磁性材料制成的磁辅助层（MAL），以优化空气轴承表面处的垂直磁场和场梯度 。 在主极和（-Ku）MAL之间形成Ru种子层，以引导朝向主极的硬轴方向。 A（-Ku）MAL优选由hcp-CoIr组成，而CoPt和FePt是（+ Ku）MAL的实例。 MAL具有5至20nm的下轨道厚度，其宽度等于轨道宽度，并且在朝向主极后端的方向上延伸100至500nm。 结果，从主极到后挡板的磁通泄漏减少，空中密度增加。 提供了一种制造PMR写入器的方法。

公开(公告)号：US08264798B1

公开(公告)日：2012-09-11

申请号：US12822120

申请日：2010-06-23

Applicant: Lijie Guan ,  Suping Song

Inventor： Lijie Guan ,  Suping Song

IPC: G11B5/127

CPC classification number: G11B5/1278 ,  G11B5/012 ,  G11B5/3116 ,  G11B5/315

Abstract: A magnetic recording head including a write pole and a shield. The write pole has a pole tip face that is parallel to the air bearing surface of the magnetic recording head, a leading surface having a leading edge at the pole face, a first side surface having a first side edge at the pole face, a second side surface having a second side edge at the pole face, and a trailing surface having a trailing edge at the pole face. The shield surrounds the first side surface, the trailing surface, and the second side surface of the write pole tip, and is separated from the first side surface of the write pole tip by a first side gap, from the trailing surface of the write pole tip by a trailing gap, and from the second side surface of the write pole tip by a second side gap. There is a notch formed in the inner wall of the shield adjacent to the corner of the write pole tip formed by one side surface and the trailing surface of the write pole tip.

Abstract translation: 一种磁记录头，包括写极和屏蔽。 写入极具有平行于磁记录头的空气支承表面的极尖表面，具有在极面处的前缘的前表面，在极面处具有第一侧边缘的第一侧表面，第二 侧面具有在极面处的第二侧边缘，以及在极面处具有后缘的后表面。 屏蔽围绕着写极尖的第一侧表面，后表面和第二侧表面，并且从写极尖的后表面与写极尖的第一侧表面分离第一侧间隙 通过尾部间隙尖端，并且从写入磁极尖端的第二侧表面通过第二侧面间隙。 在屏蔽件的内壁中形成有与由写入极尖端的一个侧表面和后表面形成的写入极尖的拐角相邻的凹口。

公开(公告)号：US07729086B1

公开(公告)日：2010-06-01

申请号：US12197612

申请日：2008-08-25

Applicant: Suping Song ,  Kroum S. Stoev

Inventor： Suping Song ,  Kroum S. Stoev

IPC: G11B5/147 ,  G11B5/56

CPC classification number: G11B5/3133 ,  G11B5/1278 ,  G11B5/3967 ,  G11B5/6064 ,  G11B5/607

Abstract: A magnetic head for perpendicular magnetic recording includes a slider having an air bearing surface (ABS) and a trailing surface and a transducer fabricated on the trailing surface. The transducer includes a magnetoresistive (MR) read element disposed within a gap material bounded by shield material, an adjunct pole, and a main pole formed in an adjacent layered relationship to the adjunct pole. The adjunct pole has a front edge that is recessed from the ABS and a rear edge. The main pole has a write tip that extends approximately to the ABS. The transducer further includes a write coil having a first layer of turns below the adjunct pole and above the shield material. The magnetic head also includes a heating element with a portion of the heating element below the write coil and behind the rear edge of the adjunct pole.

Abstract translation: 用于垂直磁记录的磁头包括具有空气轴承表面（ABS）和后表面的滑块以及在后表面上制造的换能器。 换能器包括设置在由屏蔽材料界定的间隙材料内的磁阻（MR）读取元件，辅助极和与附加极相邻的层叠关系形成的主极。 辅助杆具有从ABS凹下的前边缘和后边缘。 主杆具有大致延伸到ABS的写入尖端。 换能器还包括写入线圈，该线圈具有在辅助极下方的第一层匝并且在屏蔽材料之上。 磁头还包括加热元件，其中加热元件的一部分在写入线圈下方并在辅助极的后边缘之后。

公开(公告)号：US20140078619A1

公开(公告)日：2014-03-20

申请号：US13620764

申请日：2012-09-15

Applicant: Suping Song ,  Lijie Guan ,  Tai Min ,  Yuhui Tang

Inventor： Suping Song ,  Lijie Guan ,  Tai Min ,  Yuhui Tang

IPC: G11B5/127

CPC classification number: G11B5/315 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3163

Abstract: A magnetic recording head is fabricated with a pole tip shielded laterally on its sides by a pair of symmetrically disposed side shields formed of porous heterogeneous material that contains non-magnetic inclusions. The non-magnetic inclusions, when properly incorporated within the magnetic matrix of the shields, promote the formation of flux loops within the shields that have portions that are parallel to the ABS and do not display locally disorganized and dynamic regions of flux during the creation of magnetic transitions within the recording medium by the magnetic pole. These flux loop portions, combine with the magnetic flux emerging from the main pole to create a net writing field that significantly reduces adjacent track erasures (ATE) and wide area erasures (WATE).

Abstract translation: 制造磁记录头，其极侧通过由包含非磁性夹杂物的多孔异质材料形成的一对对称设置的侧屏蔽侧向屏蔽。 当非磁性夹杂物适当地并入屏蔽体的磁矩阵中时，促进在屏蔽体内形成具有与ABS平行的部分的磁通环，并且在创建过程中不显示局部无组织和动态的磁通区域 通过磁极在记录介质内的磁转变。 这些磁通回路部分与从主极产生的磁通相结合，形成一个净写入场，显着地减少了相邻轨道擦除（ATE）和广域擦除（WATE）。

公开(公告)号：US20120295132A1

公开(公告)日：2012-11-22

申请号：US13068652

申请日：2011-05-16

Applicant: Tai Min ,  Yuhui Tang ,  Suping Song ,  Lijie Guan

Inventor： Tai Min ,  Yuhui Tang ,  Suping Song ,  Lijie Guan

IPC: G11B5/33 ,  B05D5/12

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  Y10T428/115 ,  Y10T428/1186

Abstract: A perpendicular magnetic recording (PMR) head is fabricated with a main pole and a trailing edge shield having surfaces and interior portions that may include synthetic antiferromagnetic multi-layered superlattices (SAFS) formed on and/or within them respectively. The SAFS, which are multilayers formed as periodic multiples of antiferromagnetically coupled tri-layers, provide a mechanism for enhancing the component of the writing field that is vertical to the magnetic medium by exchange coupling to the magnetization of the pole and shield and constraining the directions of their magnetizations to lie within the film plane of the SAFS.

Abstract translation: 制造具有主极和后缘屏蔽的垂直磁记录（PMR）头，其具有可分别形成在其上和/或内的合成反铁磁多层超晶格（SAFS）的表面和内部部分。 作为形成为反铁磁耦合三层的周期倍数的多层的SAFS提供了一种用于通过交换耦合到磁极和屏蔽的磁化并限制方向来增强与磁介质垂直的写入场的分量的机制 的磁化位于SAFS的膜平面内。

公开(公告)号：US08259410B1

公开(公告)日：2012-09-04

申请号：US12126310

申请日：2008-05-23

Applicant: Zhigang Bai ,  Suping Song ,  Matthew R. Gibbons ,  Sining Mao

Inventor： Zhigang Bai ,  Suping Song ,  Matthew R. Gibbons ,  Sining Mao

IPC: G11B5/133

CPC classification number: G11B5/3136 ,  G11B5/133 ,  G11B5/3143 ,  Y10T29/49032

Abstract: A method and system for providing a magnetic transducer for recording to media is described. The method and system include providing a first pole, a main pole, at least one coil and at least one auxiliary pole. The main pole is for providing a magnetic field for recording to the media. The coil(s) are for energizing the main pole. The auxiliary pole is magnetically coupled with the main pole. The shield(s) are for magnetically isolating a portion of the magnetic transducer. At least one of the first pole, the auxiliary pole, and the at least one shield includes a composite magnetic material including a plurality of ferromagnetic grains in an insulating matrix.

Abstract translation: 描述了一种用于提供用于记录到介质的磁换能器的方法和系统。 该方法和系统包括提供第一极，主极，至少一个线圈和至少一个辅助极。 主极是为了向媒体提供磁场。 线圈用于激励主极。 辅助极与主极磁耦合。 屏蔽件用于磁性隔离磁换能器的一部分。 第一极，辅助极和至少一个屏蔽中的至少一个包括在绝缘矩阵中包括多个铁磁晶粒的复合磁性材料。

公开(公告)号：US07729087B1

公开(公告)日：2010-06-01

申请号：US12103183

申请日：2008-04-15

Applicant: Kroum S. Stoev ,  Suping Song ,  Tao Pan

Inventor： Kroum S. Stoev ,  Suping Song ,  Tao Pan

IPC: G11B5/187 ,  G11B5/58

CPC classification number: G11B5/6064 ,  G11B5/3133 ,  G11B5/607

Abstract: A magnetic head includes a slider body having a trailing surface meeting an air-bearing surface at a trailing edge and a thin-film transducer that includes a magnetic reproducing element with a magnetoresistive (MR) element disposed near the trailing edge within a gap material bounded by upper and lower shield layers. The thin-film transducer also includes a lower pole layer of a magnetic recording element disposed in a first general plane. The magnetic recording element further includes a coil having first and second turn layers disposed in second and third general planes, respectively. The magnetic head also includes resistive heating element with at least a portion of the heating element being disposed in a fourth general plane beneath both the lower pole layer and the coil but above the upper shield layer. Current flow through the heating element causes expansion of the magnetic reproducing and recording elements at the ABS.

Abstract translation: 磁头包括具有在后缘处与空气轴承表面相遇的后表面的滑块主体和薄膜换能器，该薄膜换能器包括具有磁阻（MR）元件的磁性再现元件，所述磁性再现元件设置在边界附近的间隙材料边界内 通过上下屏蔽层。 薄膜换能器还包括设置在第一通用平面中的磁记录元件的下极层。 磁记录元件还包括具有分别设置在第二和第三通用平面中的第一和第二转向层的线圈。 磁头还包括电阻加热元件，其中加热元件的至少一部分设置在下极层和线圈之下但在上屏蔽层之上的第四通用平面中。 通过加热元件的电流使ABS的磁再现和记录元件膨胀。

公开(公告)号：US07428124B1

公开(公告)日：2008-09-23

申请号：US11350993

申请日：2006-02-09

Applicant: Suping Song ,  Hai Jiang ,  Charles W. Miller ,  Kroum Stoev

Inventor： Suping Song ,  Hai Jiang ,  Charles W. Miller ,  Kroum Stoev

IPC: G11B5/147

CPC classification number: G11B5/3133 ,  G11B5/6064 ,  G11B5/607

Abstract: A thin film magnetic head includes a slider body having a trailing surface meeting an air-bearing surface at a trailing edge. A magnetic read and write elements are disposed along the trailing surface near the trailing edge. The magnetic write element includes write poles and a coil. A portion of a heating element is disposed in a first general plane beneath the coil and above the magnetic read element. At least one thermally-insulating layer of material having a thermal conductivity of less than about 2.0 W/m-K extends in a second general plane substantially beneath the heating element.

Abstract translation: 薄膜磁头包括滑块主体，其具有在后缘处会合空气轴承表面的后表面。 沿着后缘附近的后表面设置磁读写元件。 磁写入元件包括写入极和线圈。 加热元件的一部分设置在线圈下方的第一通用平面中，并且位于磁读取元件的上方。 导热率小于约2.0W / m-K的材料的至少一种绝热层在基本上在加热元件的下方的第二平面内延伸。