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公开(公告)号：US08537495B1
公开(公告)日：2013-09-17
申请号：US13738745
申请日：2013-01-10
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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公开(公告)号：US09747935B1
公开(公告)日：2017-08-29
申请号：US15199034
申请日：2016-06-30
发明人： Barry Stipe , Yi Wang , Zhigang Bai , Stanley Burgos
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.
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23.发明授权公开(公告)号：US09558763B1
公开(公告)日：2017-01-31
申请号：US15081727
申请日：2016-03-25
发明人： Peng Luo , Yunfei Li , Zhigang Bai , Hai Sun , Feng Liu , Zhanjie Li
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。
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公开(公告)号：US08917480B2
公开(公告)日：2014-12-23
申请号：US13918251
申请日：2013-06-14
发明人： Feng Liu , Zhanjie Li , Zhigang Bai
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/3146 , Y10T29/49032
摘要： A magnetic transducer has an air-bearing surface (ABS). The magnetic transducer has a main pole, at least one coil for energizing the main pole and at least one additional pole. The main pole has a yoke and a pole tip having an ABS facing surface. The at least one additional pole is adjacent to the main pole in a down track direction. The additional pole is recessed from the ABS, has a front surface facing the ABS, has at least one side surface, and has at least one flare angle between the front surface and the at least one side surface. The at least one flare angle is measured from the ABS to the at least one side surface and is at least fifty degrees and less than ninety degrees.
摘要翻译： 磁换能器具有空气轴承表面（ABS）。 磁换能器具有主极，至少一个用于激励主极和至少一个附加极的线圈。 主极具有轭和具有ABS相对表面的极尖。 所述至少一个附加极在向下的轨道方向上与主极相邻。 附加的杆从ABS凹入，具有面向ABS的前表面，具有至少一个侧表面，并且在前表面和至少一个侧表面之间具有至少一个扩张角。 从ABS到至少一个侧表面测量至少一个喇叭角，并且至少五十度且小于九十度。
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公开(公告)号：US10121495B2
公开(公告)日：2018-11-06
申请号：US15677145
申请日：2017-08-15
发明人： Feng Liu , Zhanjie Li , Zhigang Bai , Yi Wang
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.
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26.发明授权Magnetic recording write apparatus having a pole and a magnetic separation layer 有权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
发明人： Feng Liu , Zhanjie Li , Peng Luo , Zhigang Bai
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。
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公开(公告)号：US09478242B1
公开(公告)日：2016-10-25
申请号：US15081694
申请日：2016-03-25
发明人： Feng Liu , Yi Wang , Zhanjie Li , Peng Luo , Zhigang Bai , Yang Xiang
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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公开(公告)号：US09349390B1
公开(公告)日：2016-05-24
申请号：US14054924
申请日：2013-10-16
发明人： Zhigang Bai , Ut Tran , Zhanjie Li , Kevin K. Lin , Feng Liu
CPC分类号： G11B5/1278 , G11B5/17 , G11B5/3116 , G11B5/3123
摘要： A method and system provide a magnetic transducer having an air-bearing surface (ABS). The magnetic transducer includes a main pole having a pole tip, at least one auxiliary pole and at least one coil for energizing the main pole. The auxiliary pole(s) are adjacent to the main pole in a down track direction and recessed from the ABS. The coil(s) have a plurality of turns. At least one of the turns is between the auxiliary pole(s) and the ABS.
摘要翻译： 一种方法和系统提供具有空气轴承表面（ABS）的磁换能器。 磁换能器包括具有极尖的主极，至少一个辅助极和用于激励主极的至少一个线圈。 辅助极在下行轨道方向上与主极相邻并且从ABS凹入。 线圈具有多圈。 匝间至少有一个位于辅助极和ABS之间。
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29.发明授权Magnetic write pole having engineered radius of curvature and chisel angle profiles 有权具有设计曲率半径和凿角分布的磁写柱公开(公告)号：US09190079B1
公开(公告)日：2015-11-17
申请号：US14492545
申请日：2014-09-22
发明人： Feng Liu , Tao Pan , Hai Sun , Zhigang Bai , Yang Xiang , Yugang Wang , Ling Wang
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： A magnetic transducer has air-bearing surface (ABS) and includes a main pole and at least one coil. The coil(s) energize the main pole. The main pole includes a yoke and a pole tip having an ABS-facing surface. The pole tip includes a sidewall having a radius of curvature and a chisel angle. The chisel angle is measured between a yoke direction perpendicular to the ABS and a tangent the sidewall. The chisel angle for the pole tip continuously increases in the yoke direction to a maximum a first distance from the ABS-facing surface in the yoke direction. The radius of curvature for the pole tip has a minimum radius of curvature a second distance from the ABS-facing surface in the yoke direction. The first distance is greater than the second distance.
摘要翻译： 磁换能器具有空气轴承表面（ABS）并且包括主极和至少一个线圈。 线圈给主极通电。 主杆包括轭和具有面向ABS的表面的极尖。 极尖包括具有曲率半径和凿角度的侧壁。 在垂直于ABS的轭方向和侧壁切线之间测量凿角。 磁极尖的凿角在磁轭方向上连续地增大到与磁轭方向上的面向ABS的表面的最大距离。 极尖的曲率半径在磁轭方向上具有距离面向ABS的表面的第二距离的最小曲率半径。 第一距离大于第二距离。
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30.发明授权Methods for manufacturing hybrid coils for magnetic write heads used in storage systems 有权用于制造用于存储系统的磁性写入头的混合线圈的方法公开(公告)号：US09117464B1
公开(公告)日：2015-08-25
申请号：US13932332
申请日：2013-07-01
发明人： Sharat Batra , Ut Tran , Zhigang Bai , Kevin K. Lin
CPC分类号： G11B5/17 , G11B5/1278 , G11B5/3123 , G11B5/3136 , G11B2005/0005
摘要： Methods for manufacturing hybrid coils for magnetic write heads used in disk drives are described. One such embodiment includes a magnetic read/write head including a read transducer, and a write transducer including a pair of write poles, a hybrid coil including a first coil having a pancake coil configuration with at least one turn positioned between the pair of write poles, and a second coil having a helical coil configuration including a plurality of turns positioned between the pair of write poles, the second coil coupled to the first coil, where the at least one turn of the first coil is interleaved with the turns of the second coil.
摘要翻译： 描述了用于磁盘驱动器中使用的用于写磁头的混合线圈的方法。 一个这样的实施例包括包括读取换能器的磁读/写头和包括一对写磁极的写换能器，包括具有扁平线圈配置的第一线圈的混合线圈，至少一转位于一对写极之间 以及具有螺旋线圈结构的第二线圈，其包括位于所述一对写入极之间的多个匝，所述第二线圈耦合到所述第一线圈，其中所述第一线圈的所述至少一个匝与所述第二线圈的匝相交叉 线圈
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