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：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：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：US08405930B1

公开(公告)日：2013-03-26

申请号：US13070279

申请日：2011-03-23

申请人： Zhanjie Li ,  Zhigang Bai ,  Feng Liu ,  Yugang Wang

发明人： Zhanjie Li ,  Zhigang Bai ,  Feng Liu ,  Yugang Wang

IPC分类号： G11B5/147

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 ABS configured to reside in proximity to a media during use. The magnetic recording head includes a main pole, first and second auxiliary poles, a backgap, a nonmagnetic spacer, and at least one coil. The main pole includes a pole tip occupying a portion of the ABS and a back edge distal from the ABS. Each auxiliary pole has a front recessed from the ABS and a back portion. A portion of the main pole distal from the ABS resides between the auxiliary poles. The auxiliary poles are magnetically coupled with the main pole. The backgap magnetically couples the back portions of the auxiliary poles. The nonmagnetic spacer adjoins the back edge of the main pole and is between the auxiliary poles. The coil(s) energize 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。 磁记录头具有被配置为在使用期间驻留在介质附近的ABS。 磁记录头包括主极，第一和第二辅助极，后隙，非磁性间隔物和至少一个线圈。 主杆包括占据ABS的一部分的极尖和远离ABS的后边缘。 每个辅助杆具有从ABS的前凹部和后部。 远离ABS的主极的一部分位于辅助极之间。 辅助极与主极磁耦合。 后隙磁耦合辅助杆的后部。 非磁性隔离物邻接主极的后边缘并在辅助极之间。 线圈给主极通电。

公开(公告)号：US08837081B1

公开(公告)日：2014-09-16

申请号：US13312107

申请日：2011-12-06

申请人： Chengtao R. Yu ,  Dehua Han ,  Ying Hong ,  Feng Liu ,  Laurence L. Chen ,  Zhanjie Li ,  Zhigang Bai ,  Yu Lo ,  Yunfei Ding

发明人： Chengtao R. Yu ,  Dehua Han ,  Ying Hong ,  Feng Liu ,  Laurence L. Chen ,  Zhanjie Li ,  Zhigang Bai ,  Yu Lo ,  Yunfei Ding

IPC分类号： G11B5/127

CPC分类号： G11B5/6076

摘要： A method and system provide a touchdown sensor for use in disk drive. The touchdown sensor includes a sensor layer including a plurality of magnetic layers interleaved with at least one nonmagnetic layer. The plurality of magnetic layers are magnetically coupled and single domain. Further, the sensor has a temperature coefficient of resistivity (TCR) of at least 0.15%/° C.

摘要翻译： 一种方法和系统提供用于磁盘驱动器的触地传感器。 触地传感器包括传感器层，传感器层包括与至少一个非磁性层交错的多个磁性层。 多个磁性层是磁耦合的和单一的结构域。 此外，传感器的电阻率（TCR）的温度系数至少为0.15％/℃。

公开(公告)号：US08786983B1

公开(公告)日：2014-07-22

申请号：US13532658

申请日：2012-06-25

申请人： Feng Liu ,  Zhanjie Li ,  Zhigang Bai ,  Ut Tran ,  Kevin K. Lin

发明人： Feng Liu ,  Zhanjie Li ,  Zhigang Bai ,  Ut Tran ,  Kevin K. Lin

IPC分类号： G11B5/17

CPC分类号： G11B5/17 ,  G11B5/3123

摘要： A method and system provide a magnetic transducer having an air-bearing surface (ABS). The magnetic transducer includes a write pole and at least one coil. The write pole has a pole tip and a yoke. The coil(s) energize the write pole. The coil(s) include a plurality of turns a first distance from the pole and at least one additional turn a second distance from the pole. The first distance is different from the second distance. The at least one additional turn extends over at least part of two of the plurality of turns, has a length in a stripe height direction perpendicular to the ABS and has a height in a down track direction. The length is greater than the height.

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。 磁换能器包括写极和至少一个线圈。 写极具有极尖和轭。 线圈使写入极点通电。 所述线圈包括与所述极点第一距离的多个匝和距离所述极点至少一个第二距离的至少一个附加匝。 第一距离与第二距离不同。 所述至少一个附加转弯在所述多个匝中的两个匝中的至少一部分上延伸，具有垂直于所述ABS的条带高度方向上的长度，并且具有向下轨道方向的高度。 长度大于高度。

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：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：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。