公开(公告)号：US08164855B1

公开(公告)日：2012-04-24

申请号：US12614341

申请日：2009-11-06

申请人： Matthew R. Gibbons ,  Kroum S. Stoev ,  Yugang Wang ,  Adam F. Torabi ,  Lijie Guan

发明人： Matthew R. Gibbons ,  Kroum S. Stoev ,  Yugang Wang ,  Adam F. Torabi ,  Lijie Guan

IPC分类号： G11B5/127

CPC分类号： G11B5/314 ,  G11B5/3116 ,  G11B2005/0021

摘要： A method and system for providing an energy assisted magnetic recording (EAMR) transducer coupled with a laser are described. The EAMR transducer has an air-bearing surface (ABS) residing in proximity to a media during use. The method and system include providing waveguide(s), a near-field transducer (NFT), write pole(s), and coil(s). The waveguide(s) direct energy from the laser toward the ABS. The NFT is coupled with the waveguide and focuses the energy onto the media. The write pole(s) include a stitch for providing a magnetic field to the media and a yoke coupled to the stitch. The stitch includes an ABS-facing surface, a sloped surface, and an NFT-facing surface between the ABS-facing and sloped surfaces. The NFT-facing surface is substantially parallel to the NFT. The sloped surface is sloped at least twenty-five and not more than sixty-five degrees with respect to the NFT-facing surface. The coil(s) energize the write pole(s).

摘要翻译： 描述了一种用于提供与激光器耦合的能量辅助磁记录（EAMR）传感器的方法和系统。 EAMR传感器在使用过程中具有驻留在介质附近的空气轴承表面（ABS）。 该方法和系统包括提供波导，近场换能器（NFT），写极和线圈。 波导将能量从激光器引向ABS。 NFT与波导耦合，并将能量聚焦到介质上。 写极包括用于向介质提供磁场的线圈和耦合到线圈的轭。 该线圈包括面向ABS的表面，倾斜表面和面向ABS和倾斜表面之间的面向NFT的表面。 面向NFT的表面基本上平行于NFT。 倾斜的表面相对于面向NFT的表面倾斜至少二十五度且不超过六十五度。 线圈使写入极点通电。

公开(公告)号：US08705205B1

公开(公告)日：2014-04-22

申请号：US13169685

申请日：2011-06-27

申请人： Yunfei Li ,  Lijie Guan ,  Ying Hong ,  Zhigang Bai ,  Jinqiu Zhang ,  Yugang Wang ,  Feng Liu ,  Tao Pan

发明人： Yunfei Li ,  Lijie Guan ,  Ying Hong ,  Zhigang Bai ,  Jinqiu Zhang ,  Yugang Wang ,  Feng Liu ,  Tao Pan

IPC分类号： G11B5/127

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

摘要： A magnetic transducer having an air-bearing surface (ABS) is described. The magnetic transducer includes a pole and at least one coil for energizing the pole. The pole has a pole tip proximate to the ABS, a yoke distal from the ABS, and a bottom surface including a bottom bevel. At least the yoke includes at least one sidewall having a first angle and a second angle. The first angle is between the bottom surface and the at least one sidewall. The second angle is a constant distance along the at least one sidewall from the first angle.

摘要翻译： 描述了具有空气轴承表面（ABS）的磁换能器。 磁换能器包括极和用于激励极的至少一个线圈。 杆具有靠近ABS的极尖端，远离ABS的轭，以及包括底部斜面的底表面。 至少轭包括具有第一角度和第二角度的至少一个侧壁。 第一角度在底表面和至少一个侧壁之间。 第二角度是从第一角度沿着至少一个侧壁的恒定距离。

公开(公告)号：US20140016232A1

公开(公告)日：2014-01-16

申请号：US14033736

申请日：2013-09-23

申请人： Lijie Guan

发明人： Lijie Guan

IPC分类号： G11B5/23

CPC分类号： G11B5/23 ,  C23C14/06 ,  G11B5/1278 ,  G11B5/3176 ,  G11B5/6082 ,  G11B5/84 ,  G11B5/85 ,  G11B5/851

摘要： A PMR writer is disclosed that includes at least one of a recessed center section in the write pole trailing edge and a center recessed trailing shield to improve the field gradient at track edge. In all embodiments, there is a non-uniform write gap between the trailing edge and the trailing shield. The recessed portion of the write pole trailing edge and/or center recess of the trailing shield has a thickness from 10 to 40 nm in a down-track direction and a width in a cross-track direction of 20 to 200 nm. The distance between the center recess and a corner of the trailing edge is from 20 to 80 nm. A sequence of steps is provided to fabricate the two embodiments of the present invention.

摘要翻译： 公开了一种PMR写入器，其包括写磁极后缘中的凹入中心部分和中心凹陷后屏蔽中的至少一个，以改善磁道边缘处的磁场梯度。 在所有实施例中，在后缘和后屏蔽之间存在不均匀的写入间隙。 后屏蔽的写磁极后缘和/或中心凹部的凹陷部分在下行轨道方向上具有10至40nm的厚度和20至200nm的交叉磁迹方向上的宽度。 中心凹部与后缘的角部之间的距离为20〜80nm。 提供了一系列步骤来制造本发明的两个实施例。

公开(公告)号：US08379347B2

公开(公告)日：2013-02-19

申请号：US13554275

申请日：2012-07-20

申请人： Lijie Guan ,  Joe Smyth ,  Moris Dovek ,  Yoshitaka Sasaki ,  Cherng-Chyi Han

发明人： Lijie Guan ,  Joe Smyth ,  Moris Dovek ,  Yoshitaka Sasaki ,  Cherng-Chyi Han

IPC分类号： G11B5/31 ,  G11B5/23 ,  G11B5/11

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

摘要： A PMR writer with a tapered main pole layer and tapered non-magnetic top-shaping layer is disclosed that minimizes trailing shield saturation. A second non-magnetic top shaping layer may be employed to reduce the effective TH size while the bulk of the trailing shield is thicker to allow a larger process window for back end processing. A sloped surface with one end at the ABS and a second end 0.05 to 0.3 microns from the ABS is formed at a 10 to 80 degree angle to the ABS and includes a sloped surface on the upper portion of the main pole layer and on the non-magnetic top shaping layer. An end is formed on the second non-magnetic top shaping layer at the second end of the sloped surface followed by forming a conformal write gap layer and then depositing the trailing shield on the write gap layer and along the ABS.

公开(公告)号：US20130027809A1

公开(公告)日：2013-01-31

申请号：US13136182

申请日：2011-07-26

申请人： Tai Min ,  Lijie Guan ,  Min Li ,  Jiun-Ting Lee

发明人： Tai Min ,  Lijie Guan ,  Min Li ,  Jiun-Ting Lee

IPC分类号： G11B5/187 ,  C25D5/02

CPC分类号： C25D5/022 ,  G11B5/3116 ,  G11B5/3163

摘要： A high speed magnetic data writer containing a stitched pole tip that works in conjunction with the main pole is disclosed, together with a process for their manufacture. The material composition of each of these two sub-structures is slightly different; one sub-structure is optimized for high magnetic damping while the other sub-structure is optimized for high saturation magnetization.

摘要翻译： 公开了一种包含与主极结合工作的缝合针尖的高速磁数据写入器及其制造方法。 这两个子结构中的每一个的材料组成略有不同; 一个子结构被优化用于高磁阻尼，而另一个子结构被优化用于高饱和磁化强度。

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：US07921544B2

公开(公告)日：2011-04-12

申请号：US12078858

申请日：2008-04-07

申请人： Yoshitaka Sasaki ,  Hironori Araki ,  Shigeki Tanemura ,  Hiroyuki Ito ,  Lijie Guan

发明人： Yoshitaka Sasaki ,  Hironori Araki ,  Shigeki Tanemura ,  Hiroyuki Ito ,  Lijie Guan

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A thin-film magnetic head structure has a configuration adapted to manufacture a thin-film magnetic head configured such that a main magnetic pole layer including a magnetic pole end part on a side of a medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole end part so as to form a recording gap layer on the medium-opposing surface side, and a thin-film coil wound about the write shield layer or main magnetic pole layer are laminated. The main magnetic pole layer has an end face joint structure where respective end faces of the magnetic pole end part and a yoke magnetic pole part having a size greater than that of the magnetic pole end part are joined to each other, and a surface with a flat structure on a side closer to the thin-film coil.

摘要翻译： 薄膜磁头结构具有适于制造薄膜磁头的结构，该薄膜磁头被构造成使得包括在与记录介质相对的介质相对表面侧的磁极端部的主磁极层，写入屏蔽 层，以在介质相对表面侧上形成记录间隙层，并且缠绕在写入屏蔽层或主磁极层上的薄膜线圈层叠。 主磁极层具有端面接合结构，其中磁极端部的各个端面和具有大于磁极端部的尺寸的轭铁磁极部彼此接合，并且具有 平面结构在更靠近薄膜线圈的一侧。

公开(公告)号：US20110058283A1

公开(公告)日：2011-03-10

申请号：US12927125

申请日：2010-11-08

申请人： Lijie Guan ,  Moris Dovek

发明人： Lijie Guan ,  Moris Dovek

IPC分类号： G11B5/10 ,  G11B5/127

CPC分类号： G11B5/3967 ,  G11B5/11 ,  G11B5/1278

摘要： In a read-write head, the shields can serve as magnetic flux conductors for external fields, so that they direct a certain amount of flux into the recording medium. This problem has been overcome by the addition to the shields of a pair of tabs located at the edges closest to the ABS. These tabs serve to prevent flux concentrating at the edges so that horizontal fields at these edges are significantly reduced. Said tabs need to have aspect ratios of at least 2 and may be either triangular or rectangular in shape. Alternatively, the tabs may be omitted and, instead, outer portions of the shield's lower edge may be shaped so as to slope upwards away from the ABS.

摘要翻译： 在读写头中，屏蔽可以用作外部磁场的磁通导体，以便它们将一定量的磁通量引导到记录介质中。 通过添加位于最靠近ABS的边缘处的一对突片的屏蔽来克服这个问题。 这些标签用于防止在边缘集中浓度，使得这些边缘处的水平场显着减小。 所述突片需要具有至少2的纵横比，并且可以是三角形或矩形形状。 或者，可以省略突片，相反，护罩的下边缘的外部部分可以被成形为向上远离ABS倾斜。

公开(公告)号：US07580222B2

公开(公告)日：2009-08-25

申请号：US10898986

申请日：2004-07-27

申请人： Yoshitaka Sasaki ,  Lijie Guan ,  Hiroyuki Ito

发明人： Yoshitaka Sasaki ,  Lijie Guan ,  Hiroyuki Ito

IPC分类号： G11B5/127 ,  G11B5/147

CPC分类号： G11B5/1872 ,  G11B5/1278 ,  G11B5/3103 ,  G11B5/3143 ,  G11B5/3163

摘要： A thin-film magnetic head has a laminated construction comprising a main pole layer having a magnetic pole tip on the side of the medium-opposing surface opposing a recording medium, a write shield layer opposite the magnetic pole tip forming a recording gap layer, on the side of the medium-opposing surface, and a thin-film coil wound around at least a portion of the write shield layer. The main pole layer has the magnetic pole tip with a shortened structure which is not connected to the write shield layer, and an upper yoke pole section and/or lower yoke pole section with a larger size than the magnetic pole tip, and has a joined structure wherein the upper yoke pole section and/or lower yoke pole section is joined to the magnetic pole tip.

摘要翻译： 薄膜磁头具有层叠结构，该层叠结构包括：主磁极层，其在介质相对表面的与记录介质相对的一侧上具有磁极尖端;写入屏蔽层，与形成记录间隙层的磁极末端相对; 介质相对表面的侧面和缠绕在写入屏蔽层的至少一部分上的薄膜线圈。 主极层具有不与写入屏蔽层连接的具有缩短结构的磁极尖端，以及具有比磁极尖端大的尺寸的上轭铁极部分和/或下轭铁极部分，并且具有连接 结构，其中上磁轭极部分和/或下轭铁极部分接合到磁极尖端。

公开(公告)号：US20090201611A1

公开(公告)日：2009-08-13

申请号：US12384742

申请日：2009-04-08

申请人： Lijie Guan ,  Hung Liang Hu ,  Yaw Shing Tang

发明人： Lijie Guan ,  Hung Liang Hu ,  Yaw Shing Tang

IPC分类号： G11B5/60 ,  G11B5/127

CPC分类号： G11B5/1475 ,  G11B5/1278 ,  G11B5/315 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： Prior art designs of single pole writers have been limited by premature saturation at the tip. This limits the head field that can be achieved without simultaneously widening the write profile. This problem has bee solved by means of a vertical main pole whose thickness has its conventional value a short distance from the tip but that tapers down to a significantly reduced value as it approaches the tip. A process for manufacturing this tapered tip design is also presented.