公开(公告)号：US08179636B1

公开(公告)日：2012-05-15

申请号：US12042691

申请日：2008-03-05

申请人： Zhigang Bai ,  Lisha Wang ,  Tao Pan ,  Yugang Wang ,  Matthew R. Gibbons ,  Sining Mao

发明人： Zhigang Bai ,  Lisha Wang ,  Tao Pan ,  Yugang Wang ,  Matthew R. Gibbons ,  Sining Mao

IPC分类号： G11B5/31

CPC分类号： G11B5/1278 ,  G11B5/3116

摘要： A method and system for providing a magnetic transducer for recording to media is described. The method and system include providing a first pole, a main pole, an auxiliary pole, and at least one coil. The main pole has a first media-facing surface including a recessed portion and a write portion. The auxiliary pole is magnetically coupled with the main pole and has a second media-facing surface. The second media-facing surface includes a first portion and a second portion. The first portion is in proximity to the write portion of the first media-facing surface of the main pole. The second portion is in proximity to and recessed from the recessed portion of the first media-facing surface of the main pole. The coil(s) are for energizing the main pole.

摘要翻译： 描述了一种用于提供用于记录到介质的磁换能器的方法和系统。 该方法和系统包括提供第一极，主极，辅助极和至少一个线圈。 主极具有包括凹部和写入部的第一面向媒体的表面。 辅助极与主极磁耦合并具有第二介质面向表面。 第二面向媒体的表面包括第一部分和第二部分。 第一部分靠近主极的第一面向媒体的表面的写入部分。 第二部分接近主凹槽的第一面向介质表面的凹陷部分并且从其凹入。 线圈用于激励主极。

公开(公告)号：US09053715B1

公开(公告)日：2015-06-09

申请号：US13075070

申请日：2011-03-29

申请人： Lisha Wang ,  Tao Pan ,  Sining Mao ,  Zhigang Bai ,  Feng Liu ,  Zhanjie Li

发明人： Lisha Wang ,  Tao Pan ,  Sining Mao ,  Zhigang Bai ,  Feng Liu ,  Zhanjie Li

IPC分类号： G11B5/147 ,  G11B5/31

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  Y10T29/49044

摘要： A method and system for providing a magnetic recording head is described. The magnetic recording head has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The magnetic recording head includes a main pole, at least one auxiliary pole, a nonmagnetic spacer, and at least one coil. The main pole includes a first main pole piece and a second main pole piece. The first main pole piece includes a pole tip occupying a portion of the ABS and a back edge distal from the ABS. The second main pole piece has a front surface. The auxiliary pole(s) have a front recessed from the ABS and are magnetically coupled with the main pole. The nonmagnetic spacer is between the back edge of the first main pole piece and the front surface of the second main pole piece. The coil(s) are for energizing the main pole.

摘要翻译： 描述了一种用于提供磁记录头的方法和系统。 磁记录头具有在使用期间被配置为驻留在介质附近的空气轴承表面（ABS）。 磁记录头包括主极，至少一个辅助极，非磁性间隔物和至少一个线圈。 主极包括第一主极片和第二主极片。 第一主极件包括占据ABS的一部分的极尖和远离ABS的后边缘。 第二主极片具有前表面。 辅助极具有从ABS凹入的前部并与主极磁耦合。 非磁性间隔物位于第一主极片的后边缘和第二主极片的前表面之间。 线圈用于激励主极。

公开(公告)号：US08520336B1

公开(公告)日：2013-08-27

申请号：US13315098

申请日：2011-12-08

申请人： Feng Liu ,  Tao Pan ,  Zhigang Bai ,  Yugang Wang ,  Sining Mao

发明人： Feng Liu ,  Tao Pan ,  Zhigang Bai ,  Yugang Wang ,  Sining Mao

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116

摘要： A perpendicular magnetic recording head for use in a hard disk drive has a main pole that has a main pole tip in proximity to an air bearing surface. The main pole tip has a first width at the ABS, extending distally at a first angle measured from the plane of the ABS to a second width measured at a first distance from the ABS. The main pole tip extends distally at a second angle measured from the plane of the ABS from the second width to a third width, wherein the second angle is less than the first angle. The main pole tip extends distally at a third angle measured from the plane of the ABS from the third width to a fourth width, wherein the third angle is greater than the second angle. The first distance is between 25 and 100 nanometers.

摘要翻译： 用于硬盘驱动器的垂直磁记录头具有主极，该主极具有靠近空气轴承表面的主极尖。 主极端部在ABS处具有第一宽度，以从ABS的平面测量的第一角度向距离ABS的第一距离测量的第二宽度向远侧延伸。 主极尖以从ABS的平面从第二宽度测量到第二宽度的第二角度向远侧延伸，其中第二角度小于第一角度。 主极尖以从ABS的平面测量的第三角度从第三宽度向第四宽度向远侧延伸，其中第三角度大于第二角度。 第一个距离在25到100纳米之间。

公开(公告)号：US08259410B1

公开(公告)日：2012-09-04

申请号：US12126310

申请日：2008-05-23

申请人： Zhigang Bai ,  Suping Song ,  Matthew R. Gibbons ,  Sining Mao

发明人： Zhigang Bai ,  Suping Song ,  Matthew R. Gibbons ,  Sining Mao

IPC分类号： G11B5/133

CPC分类号： G11B5/3136 ,  G11B5/133 ,  G11B5/3143 ,  Y10T29/49032

摘要： A method and system for providing a magnetic transducer for recording to media is described. The method and system include providing a first pole, a main pole, at least one coil and at least one auxiliary pole. The main pole is for providing a magnetic field for recording to the media. The coil(s) are for energizing the main pole. The auxiliary pole is magnetically coupled with the main pole. The shield(s) are for magnetically isolating a portion of the magnetic transducer. At least one of the first pole, the auxiliary pole, and the at least one shield includes a composite magnetic material including a plurality of ferromagnetic grains in an insulating matrix.

摘要翻译： 描述了一种用于提供用于记录到介质的磁换能器的方法和系统。 该方法和系统包括提供第一极，主极，至少一个线圈和至少一个辅助极。 主极是为了向媒体提供磁场。 线圈用于激励主极。 辅助极与主极磁耦合。 屏蔽件用于磁性隔离磁换能器的一部分。 第一极，辅助极和至少一个屏蔽中的至少一个包括在绝缘矩阵中包括多个铁磁晶粒的复合磁性材料。

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：US08582238B1

公开(公告)日：2013-11-12

申请号：US13279105

申请日：2011-10-21

申请人： Feng Liu ,  Zhigang Bai ,  Dehua Han ,  Ming Sun ,  Yugang Wang ,  Tao Pan

发明人： Feng Liu ,  Zhigang Bai ,  Dehua Han ,  Ming Sun ,  Yugang Wang ,  Tao Pan

IPC分类号： G11B5/33

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

摘要： Systems and methods for providing perpendicular magnetic writers having gradient magnetic moment side shields are provided. In one case, the system includes a pole having a leading edge and trailing edge, a leading shield positioned closer to the leading edge than the trailing edge, the leading shield having a leading shield moment, a trailing shield positioned closer to the trailing edge than the leading edge, the trailing shield having a trailing shield moment greater than the leading shield moment, and a side shield positioned along side of the pole, the side shield including a gradient magnetic moment progressing from a first side shield moment to a second side shield moment, where the first side shield moment is about equal to the leading shield moment, and where the second side shield moment is about equal to the trailing shield moment and positioned closer to the trailing shield than the leading shield.

摘要翻译： 提供了用于提供具有梯度磁矩侧屏蔽的垂直磁性写入器的系统和方法。 在一种情况下，系统包括具有前缘和后缘的杆，位于比后缘更靠近前缘的前护罩，前护罩具有前屏蔽力矩，位于靠近后缘的后挡板比 所述前缘，所述后挡板具有大于所述前屏蔽力矩的后屏蔽力矩，以及沿所述杆的侧面定位的侧屏蔽，所述侧屏蔽包括从第一侧屏蔽力矩到第二侧屏蔽的梯度磁矩 其中第一侧面屏蔽力矩大约等于前导屏蔽力矩，并且其中第二侧面屏蔽力矩大约等于尾部屏蔽力矩，并且位于比前导屏蔽件更靠近尾部屏蔽件的位置。

公开(公告)号：US08792208B1

公开(公告)日：2014-07-29

申请号：US13481158

申请日：2012-05-25

申请人： Feng Liu ,  Yugang Wang ,  Zhigang Bai ,  Hongzhou Jiang ,  Tao Pan ,  Shaoping Li

发明人： Feng Liu ,  Yugang Wang ,  Zhigang Bai ,  Hongzhou Jiang ,  Tao Pan ,  Shaoping Li

IPC分类号： G11B5/11

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

摘要： A method and system provide a magnetic recording transducer having air-bearing surface (ABS). The magnetic recording transducer includes a pole, a side shield, a nonmagnetic gap between the side shield and the pole and at least one coil for energizing the pole. The pole has a pole tip proximate to the ABS. The side shield includes at least one nonconformal portion that extends from a throat height in a stripe height direction perpendicular to the ABS and is nonconformal with the pole. The spacing between the nonconformal portion(s) of the side shield and the pole varies based on a distance from the ABS.

摘要翻译： 一种方法和系统提供具有空气轴承表面（ABS）的磁记录换能器。 磁记录传感器包括极，侧屏蔽，侧屏蔽和极之间的非磁性间隙，以及至少一个用于激励磁极的线圈。 极杆具有靠近ABS的极尖。 所述侧护罩包括至少一个非整形部分，其从与所述ABS垂直的条带高度方向上的喉部高度延伸并且与所述杆不一致。 侧护罩的非共形部分和极之间的间距基于距离ABS的距离而变化。

公开(公告)号：US08724259B1

公开(公告)日：2014-05-13

申请号：US13493903

申请日：2012-06-11

申请人： Feng Liu ,  Dehua Han ,  Yugang Wang ,  Zhigang Bai ,  Tao Pan

发明人： Feng Liu ,  Dehua Han ,  Yugang Wang ,  Zhigang Bai ,  Tao Pan

IPC分类号： G11B5/147

CPC分类号： G11B5/11 ,  G11B5/1278 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/4886

摘要： A perpendicular magnetic recording writer for use in a data storage device, the recording transducer has a magnetic writer pole, a pole tip facing an air bearing surface (ABS). The pole tip has a pole face, leading side wall, a trailing side wall, a first side wall and a second side wall. A trailing side wall nonmagnetic gap layer on the trailing side wall, a first side wall nonmagnetic gap layer deposited on the first side wall, and a second side wall nonmagnetic gap layer deposited on the second side wall. A high magnetic moment seed layer is deposited on the trailing side wall nonmagnetic gap layer, the first side wall nonmagnetic gap layer, and the second side wall nonmagnetic gap layer. In other aspects of the invention shields are provided that have magnetic moments less than the magnetic moment of the seed layers.

摘要翻译： 一种在数据存储装置中使用的垂直磁记录刻录机，记录换能器具有磁写入极，极尖面向空气轴承表面（ABS）。 极尖具有极面，前侧壁，后侧壁，第一侧壁和第二侧壁。 在后侧壁上的后侧壁非磁性间隙层，沉积在第一侧壁上的第一侧壁非磁性间隙层和沉积在第二侧壁上的第二侧壁非磁性间隙层。 在后侧壁非磁性间隙层，第一侧壁非磁性间隙层和第二侧壁非磁性间隙层上沉积高磁矩种子层。 在本发明的其它方面，提供了具有小于种子层的磁矩的磁矩的屏蔽。

公开(公告)号：US08520337B1

公开(公告)日：2013-08-27

申请号：US13436712

申请日：2012-03-30

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

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

IPC分类号： G11B5/127

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

摘要： A perpendicular magnetic recording transducer with leading and trailing bevel side wall angles at air bearing surface for use in a data storage device is provided. The transducer includes a magnetic writer pole having a pole tip facing an air bearing surface (ABS). The pole tip includes a pole tip face having a leading edge, a trailing edge, a first side wall, and a second side wall. The first side wall includes a first side wall section adjoining the leading edge and a second side wall section adjoining the trailing edge. The first side wall section is at a first angle measured from a perpendicular center line dividing the trailing edge. The second side wall section is at a second angle measured from a perpendicular center line dividing the trailing edge. The second angle is greater than three degrees. The first angle is greater than the second angle.

摘要翻译： 提供了一种用于数据存储装置的在空气轴承表面具有前后倾斜侧壁角度的垂直磁记录传感器。 换能器包括具有面向空气轴承表面（ABS）的极尖的磁性写入极。 极尖包括具有前缘，后缘，第一侧壁和第二侧壁的极尖端面。 第一侧壁包括邻接前缘的第一侧壁部分和与后缘相邻的第二侧壁部分。 第一侧壁部分是从分割后缘的垂直中心线测量的第一角度。 第二侧壁部分是从分割后缘的垂直中心线测量的第二角度。 第二个角度大于三度。 第一角度大于第二角度。

公开(公告)号：US07755861B1

公开(公告)日：2010-07-13

申请号：US11951670

申请日：2007-12-06

申请人： Shaoping Li ,  Zhigang Bai ,  Sining Mao

发明人： Shaoping Li ,  Zhigang Bai ,  Sining Mao

IPC分类号： G11B5/02

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/656 ,  G11B5/66 ,  G11B5/746 ,  G11B2005/0021

摘要： A method and system for providing a magnetic recording medium is disclosed. The magnetic recording medium includes a plurality of regions. Each region corresponds to a bit and includes at least one grain. The grain(s) include a plurality of magnetic layers and at least one interlayer between the magnetic layers. The grain(s) have a thickness less than an exchange length of each of the magnetic layers. In addition, at least one of the magnetic layers has a coercivity different from another of the magnetic layers.

摘要翻译： 公开了一种用于提供磁记录介质的方法和系统。 磁记录介质包括多个区域。 每个区域对应一位，并且包括至少一个颗粒。 颗粒包括多个磁性层和磁性层之间的至少一个中间层。 颗粒的厚度小于每个磁性层的交换长度。 此外，至少一个磁性层具有与另一个磁性层不同的矫顽力。