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1. 发明授权

US10115416B2 Magnetic recording write apparatus having a pole having an aspect ratio greater than one and an auxiliary pole 有权
公开(公告)号：US10115416B2
公开(公告)日：2018-10-30
申请号：US15652629
申请日：2017-07-18
申请人： WESTERN DIGITAL (FREMONT), LLC
发明人： Feng Liu , Zhigang Bai , Peng Luo , Jinqiu Zhang , Ming Sun , Xiaoyu Yang , Yifan Zhang , Xiaojun Zhang , Ming Jiang
IPC分类号： G11B5/31 , G11B5/127 , G11B5/21 , G11B5/147
摘要： A magnetic write apparatus has a media-facing surface (MFS) and includes an auxiliary pole, coil(s) and a main pole having a pole tip and a yoke. The pole tip occupies part of the MFS. The yoke has a yoke length measured from the MFS in a yoke direction perpendicular to the MFS. The yoke length is less than four microns. The main pole has a total length in the yoke direction and a width in a cross-track direction. The main pole is continuous along the total length. The aspect ratio of the main pole is the total length divided by the width and exceeds one. The main pole includes surface(s) having a nonzero acute flare angle from the MFS. The auxiliary pole is adjacent to the main pole and recessed from the MFS by not more than 1.05 micron. The coil(s) energizes the main pole and have not more than two turns.

2. 发明授权

US09558763B1 Magnetic recording write apparatus having a pole including an assist portion extending in the cross-track direction 有权
标题翻译：磁记录装置具有包括沿横向方向延伸的辅助部分的极点
公开(公告)号：US09558763B1
公开(公告)日：2017-01-31
申请号：US15081727
申请日：2016-03-25
申请人： Western Digital (Fremont), LLC
发明人： Peng Luo , Yunfei Li , Zhigang Bai , Hai Sun , Feng Liu , Zhanjie Li
IPC分类号： G11B5/127 , G11B5/31
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3163
摘要： A magnetic write apparatus has a media-facing surface (MFS), a pole, side shield(s), a side gap and coil(s) for energizing the pole. The pole includes main and assist portions. The main portion is ferromagnetic, includes a pole tip and includes side surface(s) having a flare angle from the MFS. The pole tip occupies a portion of the MFS. The flare angle is nonzero and acute. The assist portion adjoins the main portion, extends from the main portion in a direction having a component in a cross-track direction, and has a depth of not more than three hundred nanometers. The side shield(s) occupy another portion of the MFS, have a back surface, and are between the assist portion and the MFS. The assist portion is conformal with the back surface of the side shield(s). The side gap is between the main portion of the pole and the side shield(s).
摘要翻译：磁性写入装置具有面向媒体的表面（MFS），极点，侧面屏蔽，侧面间隙和线圈，用于激励极点。杆包括主和辅助部分。主要部分是铁磁性的，包括一个极尖并且包括具有来自MFS的喇叭角的侧表面。极尖占据MFS的一部分。喇叭角是非零和尖锐的。辅助部分邻接主体部分，沿着具有沿横向方向的分量的方向从主体部分延伸，并且具有不超过三百纳米的深度。侧护罩占据MFS的另一部分，具有后表面，并且位于辅助部分和MFS之间。辅助部分与侧护罩的后表面共形。侧面间隙位于极的主要部分和侧面屏蔽之间。

3. 发明授权

US09576598B1 Magnetic recording write apparatus having a pole and a magnetic separation layer 有权
标题翻译：具有磁极和磁分离层的磁记录写装置
公开(公告)号：US09576598B1
公开(公告)日：2017-02-21
申请号：US15199793
申请日：2016-06-30
申请人： Western Digital (Fremont), LLC
发明人： Feng Liu , Zhanjie Li , Peng Luo , Zhigang Bai
IPC分类号： G11B5/127 , G11B5/31
CPC分类号： G11B5/313 , G11B5/127 , G11B5/1278 , G11B5/3116
摘要： A magnetic write apparatus has a media-facing surface (MFS) and includes a main pole, an auxiliary pole, a magnetic separation layer and coil(s). The auxiliary pole is adjacent to the main pole and has an auxiliary pole front surface recessed from the MFS by a first distance. The first distance is nonzero. The magnetic separation layer has a front surface facing the MFS and a back surface opposite to the front surface. The back surface is closer to the MFS than the first distance. The front surface is recessed from the MFS by a second distance that is nonzero. The coil(s) energize the main pole.
摘要翻译：磁性写入装置具有面向介质的表面（MFS），并且包括主极，辅助极，磁分离层和线圈。辅助极与主极相邻，并具有从MFS凹入第一距离的辅助极前表面。第一个距离是非零的。磁分离层具有面向MFS的前表面和与前表面相对的后表面。后表面比第一距离更靠近MFS。前表面从MFS凹下第二个非零的距离。线圈给主极通电。

4. 发明授权

US09478242B1 Magnetic recording apparatus having a recessed additional pole segment 有权
标题翻译：具有凹入的附加极段的磁记录装置
公开(公告)号：US09478242B1
公开(公告)日：2016-10-25
申请号：US15081694
申请日：2016-03-25
申请人： Western Digital (Fremont), LLC
发明人： Feng Liu , Yi Wang , Zhanjie Li , Peng Luo , Zhigang Bai , Yang Xiang
IPC分类号： G11B5/33 , G11B5/60 , G11B5/127 , G11B5/187
CPC分类号： G11B5/315 , G11B5/1272 , G11B5/3116
摘要： A magnetic write apparatus has a media-facing surface (MFS), a pole, a trailing shield, coil(s) and a write gap between the pole and trailing shield. The pole includes leading and trailing surfaces, a main portion having a first bevel and an additional portion having a second bevel and adjoining the main portion. The first bevel adjoins the MFS and is at a nonzero, acute first bevel angle from a direction perpendicular to the MFS. The second bevel is recessed from the MFS by not more than eighty nanometers, oriented at a second bevel angle from the direction and offset from the first bevel by a taper having a taper angle that is greater than the first bevel angle. The additional portion is at least ten nanometers and not more than sixty nanometers thick as measured from the first bevel.
摘要翻译：磁性写入装置具有面向介质的表面（MFS），极，后屏蔽，线圈和极和后屏蔽之间的写入间隙。杆包括前表面和后表面，主要部分具有第一斜面和附加部分，其具有第二斜面并邻接主要部分。第一个斜面与MFS相邻，从垂直于MFS的方向处于非零尖锐的第一个斜角。第二斜面从MFS凹进不超过八十纳米，其方向与第一斜面的方向成第二斜角并且具有大于第一斜角的锥角的锥形。附加部分是从第一斜面测量的至少十纳米且不超过六十纳米的厚度。

5. 发明授权

US09779765B1 Perpendicular magnetic recording writer having improved performance and wide area track erasure reliability 有权
公开(公告)号：US09779765B1
公开(公告)日：2017-10-03
申请号：US15245850
申请日：2016-08-24
申请人： Western Digital (Fremont), LLC
发明人： Feng Liu , Zhanjie Li , Peng Luo , Zhigang Bai
IPC分类号： G11B5/127 , G11B5/31 , G11B5/024
CPC分类号： G11B5/3116 , G11B5/024 , G11B5/1278 , G11B5/1871 , G11B5/3143 , G11B5/315
摘要： A magnetic writer includes a high magnetic moment write pole layer on a main write pole, the write pole layer including a proximal end recessed from the air bearing surface, and a Wide Area Track Erasure (WATER) reservoir recessed from the proximal end of the write pole layer and transverse to a longitudinal direction of the main write pole. The write pole layer may be conformal in shape to, but have smaller dimensions relative to, the main write pole, such that a distance between their outer surfaces is generally constant in a flare region. The WATER reservoir width, in a cross-track direction, may be greater than or equal to the maximum width of the main write pole.

6. 发明授权

US09721591B1 Magnetic recording write apparatus having a pole having an aspect ratio greater than one and an auxiliary pole 有权
公开(公告)号：US09721591B1
公开(公告)日：2017-08-01
申请号：US15097182
申请日：2016-04-12
申请人： Western Digital (Fremont), LLC
发明人： Feng Liu , Zhigang Bai , Peng Luo , Jinqiu Zhang , Ming Sun , Xiaoyu Yang , Yifan Zhang , Xiaojun Zhang , Ming Jiang
IPC分类号： G11B5/127 , G11B5/31 , G11B5/21 , G11B5/147
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1475 , G11B5/21 , G11B5/3146
摘要： A magnetic write apparatus has a media-facing surface (MFS) and includes an auxiliary pole, coil(s) and a main pole having a pole tip and a yoke. The pole tip occupies part of the MFS. The yoke has a yoke length measured from the MFS in a yoke direction perpendicular to the MFS. The yoke length is less than four microns. The main pole has a total length in the yoke direction and a width in a cross-track direction. The main pole is continuous along the total length. The aspect ratio of the main pole is the total length divided by the width and exceeds one. The main pole includes surface(s) having a nonzero acute flare angle from the MFS. The auxiliary pole is adjacent to the main pole and recessed from the MFS by not more than 1.05 micron. The coil(s) energizes the main pole and have not more than two turns.

7. 发明授权

US08537495B1 Magnetic writer having a split yoke 有权
公开(公告)号：US08537495B1
公开(公告)日：2013-09-17
申请号：US13738745
申请日：2013-01-10
申请人： Western Digital (Fremont), LLC
发明人： Peng Luo , Zhigang Bai , Yugang Wang , Kroum S. Stoev , Francis H. Liu
IPC分类号： G11B5/31
CPC分类号： G11B5/1278 , G11B5/3123
摘要： A method and system for providing a magnetic transducer are described. The magnetic transducer includes a first pole, a write gap, a second pole, a first coil, and a second coil. The first pole has a front portion on which at least a portion of the write gap resides. The second pole includes a split yoke that includes a first portion and a second portion. At least a portion of the first coil resides between the first portion of the split yoke and the first pole. At least a portion of the second coil resides between the second portion of the split yoke and the first pole.

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