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1. 发明授权

US09754611B1 Magnetic recording write apparatus having a stepped conformal trailing shield 有权
公开(公告)号：US09754611B1
公开(公告)日：2017-09-05
申请号：US14953982
申请日：2015-11-30
申请人： Western Digital (Fremont), LLC
发明人： Feng Liu , Zhanjie Li , Zhigang Bai , Yi Wang
IPC分类号： G11B5/11 , G11B5/31 , G11B5/127
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/23 , G11B5/3146 , G11B5/315
摘要： A magnetic write apparatus has a media-facing surface (MFS), a pole having leading and trailing surfaces, a trailing shield having a pole-facing surface, a write gap and coil(s). The pole's trailing surface has a portion adjoining the MFS and oriented at a nonzero, acute bevel angle from a direction perpendicular to the MFS. The pole-facing surface includes a first portion adjoining the MFS and oriented at a first angle substantially the same as the bevel angle, a second portion oriented at a second angle greater than the first trailing shield angle, and a third portion oriented at a third angle substantially the same as the first angle. The write gap has first, second and third thicknesses adjacent to the first, second and third portions of the pole-facing surface, respectively. The first thickness is constant. The second thickness varies. The third thickness is constant and greater than the first thickness.

2. 发明授权

US09747935B1 Heat assisted magnetic recording writer having pole coupled with the NFT 有权
公开(公告)号：US09747935B1
公开(公告)日：2017-08-29
申请号：US15199034
申请日：2016-06-30
申请人： Western Digital (Fremont), LLC
发明人： Barry Stipe , Yi Wang , Zhigang Bai , Stanley Burgos
IPC分类号： G11B5/02 , G11B11/00 , G11B5/48 , G11B5/60 , G11B5/00
CPC分类号： G11B5/6088 , G11B5/3116 , G11B5/314 , G11B2005/0021
摘要： A heat assisted magnetic recording (HAMR) write apparatus has a media-facing surface (MFS) and is coupled with a laser that provides energy. The HAMR write apparatus includes a waveguide, a near-field transducer (NFT), a pole and coil(s) for energizing the pole. The waveguide is optically coupled with the laser and directs a first portion of the energy toward the MFS. The NFT is optically coupled with the waveguide. The pole writes to a region of the media and includes a pole tip. A first portion of the pole tip is at the MFS and is separated from the NFT in a down track direction. A second portion of the pole tip is recessed from the MFS and between the first portion and the NFT.

3. 发明授权

US09595273B1 Shingle magnetic writer having nonconformal shields 有权
标题翻译：具有非共形屏蔽层的磁性写入器
公开(公告)号：US09595273B1
公开(公告)日：2017-03-14
申请号：US14871763
申请日：2015-09-30
申请人： Western Digital (Fremont), LLC
发明人： Feng Liu , Zhigang Bai , Jinqiu Zhang , Zhanjie Li , Yi Wang
IPC分类号： G11B5/31 , G11B5/23 , G11B5/127
CPC分类号： G11B5/115 , G11B5/1278 , G11B5/23 , G11B5/3116 , G11B5/315 , G11B5/6082
摘要： A shingle magnetic write apparatus is described. The shingle magnetic write apparatus includes a pole, a side gap, a write gap, a top shield and side shield(s). The pole has a pole tip region including a top wider than a bottom, and sides. The sides are at a sidewall angle from a down track direction. The write gap is adjacent to the pole top and between the top shield and the pole top. The side shield(s) are magnetically connected with the top shield and extend past the bottom of the pole. The side gap is between the side shield(s) and the pole. The side shield(s) have pole-facing surface(s) not more than a side shield angle from the down track direction. The side shield angle is less than the sidewall angle. The side gap width increases from the top near the gap to the bottom near the bottom of the pole.
摘要翻译：描述了一种木瓦磁性写入装置。木瓦磁性写入装置包括极，侧间隙，写间隙，顶屏蔽和侧屏蔽。极具有包括顶部宽于底部的顶端区域和侧面。侧面处于从向下方向的侧壁角度。写入间隙与极顶相邻并且在顶部屏蔽和极顶之间。侧面屏蔽层与顶部屏蔽层磁性连接，并延伸穿过极板的底部。侧面间隙位于侧面屏蔽和极板之间。侧护罩具有不大于沿着下轨道方向的侧屏蔽角的极面对面。侧面屏蔽角小于侧壁角度。侧间隙宽度从顶部附近的间隙增加到靠近极底部的底部。

4. 发明授权

US10121495B2 Magnetic recording write apparatus having a stepped conformal trailing shield 有权
公开(公告)号：US10121495B2
公开(公告)日：2018-11-06
申请号：US15677145
申请日：2017-08-15
申请人： WESTERN DIGITAL (FREMONT), LLC
发明人： Feng Liu , Zhanjie Li , Zhigang Bai , Yi Wang
IPC分类号： G11B5/11 , G11B5/23 , G11B5/31 , G11B5/127
摘要： A magnetic write apparatus has a media-facing surface (MFS), a pole having leading and trailing surfaces, a trailing shield having a pole-facing surface, a write gap and coil(s). The pole's trailing surface has a portion adjoining the MFS and oriented at a nonzero, acute bevel angle from a direction perpendicular to the MFS. The pole-facing surface includes a first portion adjoining the MFS and oriented at a first angle substantially the same as the bevel angle, a second portion oriented at a second angle greater than the first trailing shield angle, and a third portion oriented at a third angle substantially the same as the first angle. The write gap has first, second and third thicknesses adjacent to the first, second and third portions of the pole-facing surface, respectively. The first thickness is constant. The second thickness varies. The third thickness is constant and greater than the first thickness.

5. 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。

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