公开(公告)号：US08257597B1

公开(公告)日：2012-09-04

申请号：US12717090

申请日：2010-03-03

申请人： Lijie Guan ,  Changqing Shi ,  Ming Jiang ,  Yun-Fei Li

发明人： Lijie Guan ,  Changqing Shi ,  Ming Jiang ,  Yun-Fei Li

IPC分类号： B44C1/22

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  Y10T29/49021 ,  Y10T29/49048

摘要： Methods of forming a write pole are disclosed. A first photomask having a first opening over one of a yoke region and a pole tip region of the write pole is formed over an insulation layer having an insulator material. A first etch process is performed on the insulation layer via the first opening, the first etch process removing the insulator material from a corresponding one of the yoke region and the pole tip region. A second photomask having a second opening over the other one of the yoke region and the pole tip region is formed over the insulation layer. A second etch process is performed on the insulation layer via the second opening, the second etch process removing the insulator material from a corresponding one of the yoke region and the pole tip region.

摘要翻译： 公开了形成写极的方法。 在具有绝缘体材料的绝缘层上形成第一光掩模，其具有位于写磁极的磁轭区域和极尖区域之一上的第一开口。 通过第一开口在绝缘层上执行第一蚀刻工艺，第一蚀刻工艺从磁轭区域和极尖区域中的对应的一个去除绝缘体材料。 在绝缘层上形成第二光掩模，该第二光掩模具有位于轭区域和极尖区域另一个之上的第二开口。 经由第二开口在绝缘层上执行第二蚀刻工艺，第二蚀刻工艺从磁轭区域和极尖区域中的对应的一个去除绝缘体材料。

公开(公告)号：US08444866B1

公开(公告)日：2013-05-21

申请号：US12886999

申请日：2010-09-21

申请人： Lijie Guan ,  Changqing Shi ,  Ming Jiang ,  Yun-Fei Li ,  Ying Hong

发明人： Lijie Guan ,  Changqing Shi ,  Ming Jiang ,  Yun-Fei Li ,  Ying Hong

IPC分类号： B44C1/22

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49021 ,  Y10T29/49032

摘要： A method for fabricating a magnetic transducer having a nonmagnetic intermediate layer is described. A trench is provided in the intermediate layer. The trench has a profile and location corresponding to a pole. A first nonmagnetic gap layer is provided. At least part of the first nonmagnetic gap layer resides in the trench. A pole including magnetic material(s) is provided. At least part of the pole resides in the trench and on the part of the nonmagnetic layer in the trench. At least part of the intermediate layer adjacent to the pole is removed and a second nonmagnetic gap layer provided. The second nonmagnetic gap layer is thicker than the first nonmagnetic gap layer. Part of the second nonmagnetic layer and part of the first nonmagnetic layer adjacent to the pole form a side gap. A side shield, a gap, and a top shield are also provided.

摘要翻译： 描述了一种用于制造具有非磁性中间层的磁换能器的方法。 在中间层设置沟槽。 沟槽具有对应于杆的轮廓和位置。 提供第一非磁性间隙层。 第一非磁性间隙层的至少一部分位于沟槽中。 提供包括磁性材料的极柱。 极的至少一部分驻留在沟槽中以及在沟槽中的非磁性层的一部分上。 去除与极相邻的中间层的至少一部分，并提供第二非磁性间隙层。 第二非磁性间隙层比第一非磁性间隙层厚。 第二非磁性层的一部分和与极相邻的第一非磁性层的一部分形成侧面间隙。 还提供了侧护罩，间隙和顶盖。

公开(公告)号：US08375564B1

公开(公告)日：2013-02-19

申请号：US12633562

申请日：2009-12-08

申请人： Guanghong Luo ,  Danning Yang ,  Weimin Si ,  Dujiang Wan ,  Yun-Fei Li ,  Lijie Guan ,  Ming Jiang

发明人： Guanghong Luo ,  Danning Yang ,  Weimin Si ,  Dujiang Wan ,  Yun-Fei Li ,  Lijie Guan ,  Ming Jiang

IPC分类号： G11B5/127 ,  H04R31/00

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

摘要： A method provides a pole of magnetic recording transducer. A nonmagnetic stop layer having a thickness and a top surface is provided. A depression that forms a bevel is provided in the stop layer. The bevel has a depth less than the thickness and a bevel angle with respect to a remaining portion of the top surface. The bevel angle is greater than zero and less than ninety degrees. An intermediate layer having a substantially flat top surface is provided over the stop layer. A trench is formed in the intermediate layer via a removal process. The trench has a profile corresponding to the pole. The stop layer is a stop for the removal process. The method also includes providing the pole in the trench. The pole has a leading edge bevel corresponding to the bevel in the stop layer.

摘要翻译： 一种方法提供磁记录传感器的极点。 提供具有厚度和顶表面的非磁性停止层。 形成斜面的凹陷设置在停止层中。 该斜面具有小于该厚度的深度和相对于顶部表面的剩余部分的斜角。 斜角大于零，小于九十度。 具有基本上平坦的顶表面的中间层设置在停止层上。 通过去除工艺在中间层中形成沟槽。 沟槽具有对应于极点的轮廓。 停止层是移除过程的停止点。 该方法还包括在沟槽中设置极点。 极具有对应于停止层中的斜面的前缘斜面。

公开(公告)号：US08443510B1

公开(公告)日：2013-05-21

申请号：US12473893

申请日：2009-05-28

申请人： Changqing Shi ,  Ming Jiang ,  Lijie Guan

发明人： Changqing Shi ,  Ming Jiang ,  Lijie Guan

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3166 ,  G11B5/3169 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A method for providing at least one transducer including magnetic structure and having an air-bearing surface (ABS) are described. The method includes providing a lapping electronic lapping guide (lapping ELG) and a targeting ELG. The lapping ELG and targeting ELG each are coplanar with the desired thickness of the magnetic structure and have a back edge at the distance from the ABS such that the ELG back edges are substantially aligned with the flare point. The targeting ELG has a front edge at a front edge distance from the ABS corresponding to an intersection of the bevel and the desired thickness. The method further includes lapping the transducer and terminating the lapping based on a first resistance of the lapping ELG and a second resistance of the targeting ELG.

摘要翻译： 描述了一种用于提供包括磁性结构并具有空气轴承表面（ABS）的至少一个换能器的方法。 该方法包括提供研磨电子研磨导向器（研磨ELG）和靶向ELG。 研磨ELG和靶向ELG各自与磁性结构的期望厚度共面，并且具有与ABS的距离的后边缘，使得ELG后边缘基本上与火炬点对准。 靶向ELG在与斜面和所需厚度的交点相对应的ABS的前边缘距离处具有前边缘。 该方法还包括基于研磨ELG的第一电阻和靶向ELG的第二电阻来研磨换能器并终止研磨。

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：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：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。