公开(公告)号：US08238059B1

公开(公告)日：2012-08-07

申请号：US13066095

申请日：2011-04-06

申请人： Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

发明人： Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163

摘要： 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.

摘要翻译： 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：US20120257305A1

公开(公告)日：2012-10-11

申请号：US13066178

申请日：2011-04-08

申请人： Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

发明人： Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

IPC分类号： G11B5/31 ,  G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49032

摘要： 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.

摘要翻译： 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：US20140078619A1

公开(公告)日：2014-03-20

申请号：US13620764

申请日：2012-09-15

申请人： Suping Song ,  Lijie Guan ,  Tai Min ,  Yuhui Tang

发明人： Suping Song ,  Lijie Guan ,  Tai Min ,  Yuhui Tang

IPC分类号： G11B5/127

CPC分类号： G11B5/315 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3163

摘要： 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).

摘要翻译： 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

申请人： Tai Min ,  Yuhui Tang ,  Suping Song ,  Lijie Guan

发明人： Tai Min ,  Yuhui Tang ,  Suping Song ,  Lijie Guan

IPC分类号： G11B5/33 ,  B05D5/12

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  Y10T428/115 ,  Y10T428/1186

摘要： 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.

摘要翻译： 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：US08755149B2

公开(公告)日：2014-06-17

申请号：US13620764

申请日：2012-09-15

申请人： Suping Song ,  Lijie Guan ,  Tai Min ,  Yuhui Tang

发明人： Suping Song ,  Lijie Guan ,  Tai Min ,  Yuhui Tang

IPC分类号： G11B5/127

CPC分类号： G11B5/315 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3163

摘要： 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).

摘要翻译： 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：US08498079B1

公开(公告)日：2013-07-30

申请号：US13620760

申请日：2012-09-15

申请人： Suping Song ,  Yuhui Tang ,  Tai Min ,  Lijie Guan

发明人： Suping Song ,  Yuhui Tang ,  Tai Min ,  Lijie Guan

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

摘要： A PMR writer is disclosed with an all wrap around design wherein the leading shield, side shields, and composite trailing shield are comprised of an anisotropic (−Ku) magnetic layer, and where the leading shield and side shields adjoin a gap layer. The composite shield has a first layer made of an isotropic magnetic material adjoining the write gap, and the anisotropic (−Ku) layer adjoins the first trailing shield layer on a side opposite the write gap. The main pole may have a tapered leading side and a tapered trailing side with the anisotropic (−Ku) leading shield and trailing shield layers extending a greater distance from the ABS than the ends of the tapered main pole sides. Adjacent track erasure is minimized while on-track write field and field gradient are improved.

摘要翻译： 公开了一种全息环绕设计的PMR写入器，其中前屏蔽，侧屏蔽和复合拖尾屏蔽由各向异性（-Ku）磁性层组成，并且其中前屏蔽和侧屏蔽邻接间隙层。 复合屏蔽具有由与写入间隙相邻的各向同性磁性材料制成的第一层，各向异性（-Ku）层与写入间隙相对的一侧与第一后屏蔽层相邻。 主极可以具有锥形前缘和锥形后缘，各向异性（-Ku）前屏蔽和后屏蔽层比锥形主极侧的端部从ABS延伸更大的距离。 相邻的磁道擦除最小化，同时提高了磁道写入场和磁场梯度。

公开(公告)号：US08456778B2

公开(公告)日：2013-06-04

申请号：US13068652

申请日：2011-05-16

申请人： Tai Min ,  Yuhui Tang ,  Suping Song ,  Lijie Guan

发明人： Tai Min ,  Yuhui Tang ,  Suping Song ,  Lijie Guan

IPC分类号： G11B5/33

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  Y10T428/115 ,  Y10T428/1186

摘要： 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.

摘要翻译： 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：US08284516B1

公开(公告)日：2012-10-09

申请号：US13066178

申请日：2011-04-08

申请人： Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

发明人： Yuhui Tang ,  Lijie Guan ,  Tai Min ,  Suping Song

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49032

摘要： 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.

摘要翻译： 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：US08564903B2

公开(公告)日：2013-10-22

申请号：US13068638

申请日：2011-05-16

申请人： Tai Min ,  Yuhui Tang ,  Lijie Guan ,  Min Li

发明人： Tai Min ,  Yuhui Tang ,  Lijie Guan ,  Min Li

IPC分类号： G11B5/127

CPC分类号： G11B5/232 ,  G11B5/1278 ,  G11B5/235 ,  G11B5/3116 ,  H01F10/3272 ,  Y10T428/1186

摘要： A perpendicular magnetic recording (PMR) head is fabricated with main pole and a trailing edge shield antiferromagnetically coupled across a write gap by either having the write gap layer formed as a synthetic antiferromagnetic tri-layer (SAF) or formed as a monolithic layer of antiferromagnetic material. The coupling improves the write performance of the writer by enhancing the perpendicular component of the write field and its gradient. Methods of fabricating the writer are provided.

摘要翻译： 制造垂直磁记录（PMR）头，其主磁极和后沿屏蔽通过将写间隙层形成为合成反铁磁三层（SAF）或形成为反铁磁性单片层 材料。 耦合通过增强写入场的垂直分量及其梯度来提高写入器的写入性能。 提供了作者的制作方法。

公开(公告)号：US20120295133A1

公开(公告)日：2012-11-22

申请号：US13068638

申请日：2011-05-16

申请人： Tai Min ,  Yuhui Tang ,  Lijie Guan ,  Min Li

发明人： Tai Min ,  Yuhui Tang ,  Lijie Guan ,  Min Li

IPC分类号： G11B5/187 ,  H01F1/047

CPC分类号： G11B5/232 ,  G11B5/1278 ,  G11B5/235 ,  G11B5/3116 ,  H01F10/3272 ,  Y10T428/1186

摘要： A perpendicular magnetic recording (PMR) head is fabricated with main pole and a trailing edge shield antiferromagnetically coupled across a write gap by either having the write gap layer formed as a synthetic antiferromagnetic tri-layer (SAF) or formed as a monolithic layer of antiferromagnetic material. The coupling improves the write performance of the writer by enhancing the perpendicular component of the write field and its gradient. Methods of fabricating the writer are provided.

摘要翻译： 制造垂直磁记录（PMR）头，其主磁极和后沿屏蔽通过将写间隙层形成为合成反铁磁三层（SAF）或形成为反铁磁性的单片层，反写磁耦合跨写写间隙 材料。 耦合通过增强写入场的垂直分量及其梯度来改善写入器的写入性能。 提供了作者的制作方法。