公开(公告)号：US06801409B2

公开(公告)日：2004-10-05

申请号：US09952725

申请日：2001-09-14

申请人： Richard P. Michel ,  Mark T. Kief ,  Dehua Han ,  Venkateswara R. Inturi ,  Vladyslav A. Vas'ko

发明人： Richard P. Michel ,  Mark T. Kief ,  Dehua Han ,  Venkateswara R. Inturi ,  Vladyslav A. Vas'ko

IPC分类号： G11B539

CPC分类号： G11B5/3903 ,  G11B5/11 ,  G11B5/115 ,  G11B5/3109 ,  G11B5/3113 ,  G11B5/313 ,  Y10T29/49046

摘要： A read head shield having improved stability includes a ferromagnetic (FM) layer and an anti-ferromagnetic (AFM) layer adjacent the FM layer. The FM layer has a patterned shape and a domain configuration that is defined by a plurality of local magnetic domains that are stabilized in accordance with the patterned shape. The AFM layer is annealed to imprint thereon the stabilized local magnetic domains of the FM layer. The AFM layer operates to increase the stability of the domain configuration of the FM layer thereby providing improved resistance to domain configuration shift caused by the application of a strong magnetic field.

摘要翻译： 具有改进的稳定性的读头屏蔽包括邻近FM层的铁磁（FM）层和反铁磁（AFM）层。 FM层具有由根据图案形状稳定的多个局部磁畴限定的图案形状和畴结构。 对AFM层进行退火以在其上压印FM层的稳定的局部磁畴。 AFM层操作以增加FM层的畴结构的稳定性，从而提供由施加强磁场引起的对域配置位移的改进的阻力。

公开(公告)号：US09052269B1

公开(公告)日：2015-06-09

申请号：US13460501

申请日：2012-04-30

申请人： Lifan Chen ,  Haifeng Wang ,  Li Zeng ,  Dehua Han

发明人： Lifan Chen ,  Haifeng Wang ,  Li Zeng ,  Dehua Han

IPC分类号： G06F19/00 ,  G01N31/00 ,  G01N23/083

CPC分类号： G01N23/083 ,  G01N9/24 ,  G01N23/20091 ,  G01N2223/40

摘要： Methods for characterizing relative film density using spectroscopic analysis at the device level are provided. One such method includes obtaining a composition of materials at preselected areas of a workpiece using energy dispersive X-ray spectroscopy, obtaining an electron energy loss spectrum-imaging data at each of the preselected areas using electron energy loss spectroscopy, removing, for each of the preselected areas, a preselected noise component of the electron energy spectrum-imaging data to form a plasmon energy spectrum-imaging data, generating, for each of the preselected areas, a plasmon energy map based on the respective plasmon energy spectrum-imaging data, determining, for each of the preselected areas, an average plasmon energy value from the respective plasmon energy map, and calculating a relative mass density of the preselected areas based on the average plasmon energy value, a number of valence electrons per molecule, and a molecular weight for each of the preselected areas.

摘要翻译： 提供了在器件级使用光谱分析来表征相对膜密度的方法。 一种这样的方法包括使用能量色散X射线光谱法在工件的预选区域获得材料的组成，使用电子能量损失光谱法在每个预选区域获得电子能量损失光谱成像数据， 预选区域，电子能谱成像数据的预选噪声分量，以形成等离子体激元能谱成像数据，为每个预选区域生成基于相应的等离子体激元能谱成像数据的等离子体激元能量图，确定 对于每个预选区域，来自各个等离子体激元能量图的平均等离子体激元能量值，并且基于平均等离子体激元能量值，每分子的价电子数和分子量来计算预选区域的相对质量密度 对于每个预选区域。

公开(公告)号：US20140063657A1

公开(公告)日：2014-03-06

申请号：US13823672

申请日：2010-09-15

申请人： Kaizhong Gao ,  Eric Meloche ,  Jianhua Xue ,  Eric S. Linville ,  Dehua Han ,  Huaqing Yin

发明人： Kaizhong Gao ,  Eric Meloche ,  Jianhua Xue ,  Eric S. Linville ,  Dehua Han ,  Huaqing Yin

IPC分类号： G11B5/193 ,  G11B5/187

CPC分类号： G11B5/193 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/315

摘要： A write element including a pole tip shield is disclosed. In embodiments disclosed, for example, the pole tip shield includes side shield portions fabricated of a graded magnetic moment material to form graded side shield portions having a magnetic moment that decreases in the down-track direction along a length of the side shield portions. In another embodiment, the pole tip shield includes side shield portions having a shortened length extending along a partial length of side edges of the pole tip. In illustrated embodiments, the side shield portions are formed of a contoured body having an indented portion forward of the leading edge of the pole tip. The indented portion has a rounded indented surface contour forming a rounded profile for a gap region between a leading edge portion of the pole tip shield forward of the leading edge of the pole tip.

摘要翻译： 公开了一种包括极端屏蔽的写入元件。 在所公开的实施例中，例如，极尖屏蔽包括由渐变磁矩材料制成的侧屏蔽部分，以形成具有沿着侧屏蔽部分的长度在下游方向上减小的磁矩的分级侧屏蔽部分。 在另一个实施例中，极尖屏蔽包括侧面屏蔽部分，其具有沿磁极末端的侧边缘的部分长度延伸的缩短的长度。 在所示的实施例中，侧面屏蔽部分由具有在极尖的前缘前方的凹入部分的成形体形成。 凹入部分具有圆形的缩进表面轮廓，其形成圆顶轮廓，用于在极尖前缘前方的极尖护罩的前缘部分之间的间隙区域。

公开(公告)号：US08810964B2

公开(公告)日：2014-08-19

申请号：US13823672

申请日：2010-09-15

申请人： Kaizhong Gao ,  Eric Meloche ,  Jianhua Xue ,  Eric S. Linville ,  Dehua Han ,  Huaqing Yin

发明人： Kaizhong Gao ,  Eric Meloche ,  Jianhua Xue ,  Eric S. Linville ,  Dehua Han ,  Huaqing Yin

IPC分类号： G11B5/127

CPC分类号： G11B5/193 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/315

摘要： A write element including a pole tip shield is disclosed. In embodiments disclosed, for example, the pole tip shield includes side shield portions fabricated of a graded magnetic moment material to form graded side shield portions having a magnetic moment that decreases in the down-track direction along a length of the side shield portions. In another embodiment, the pole tip shield includes side shield portions having a shortened length extending along a partial length of side edges of the pole tip. In illustrated embodiments, the side shield portions are formed of a contoured body having an indented portion forward of the leading edge of the pole tip. The indented portion has a rounded indented surface contour forming a rounded profile for a gap region between a leading edge portion of the pole tip shield forward of the leading edge of the pole tip.

摘要翻译： 公开了一种包括极端屏蔽的写入元件。 在所公开的实施例中，例如，极尖屏蔽包括由渐变磁矩材料制成的侧屏蔽部分，以形成具有沿着侧屏蔽部分的长度在下游方向上减小的磁矩的分级侧屏蔽部分。 在另一个实施例中，极尖屏蔽包括侧面屏蔽部分，其具有沿磁极末端的侧边缘的部分长度延伸的缩短的长度。 在所示的实施例中，侧面屏蔽部分由具有在极尖的前缘前方的凹入部分的成形体形成。 凹入部分具有圆形的缩进表面轮廓，其形成圆顶轮廓，用于在极尖前缘前方的极尖护罩的前缘部分之间的间隙区域。

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：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：US08582241B1

公开(公告)日：2013-11-12

申请号：US13479095

申请日：2012-05-23

申请人： Chengtao R. Yu ,  Dehua Han ,  Ying Hong ,  Feng Liu ,  Bo Zhang ,  Tao Pan

发明人： Chengtao R. Yu ,  Dehua Han ,  Ying Hong ,  Feng Liu ,  Bo Zhang ,  Tao Pan

IPC分类号： G11B5/147

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

摘要： A method and system for providing a magnetic read transducer is described. The magnetic recording transducer includes a write pole, a nonmagnetic gap, a magnetic seed layer, a trailing shield and coil(s) that energize the write pole. The write pole is configured to write to a media. The nonmagnetic gap is between the write pole and the magnetic seed layer. The magnetic seed layer includes a high moment layer and a magnetic buffer layer. The high moment layer is between the nonmagnetic gap and the magnetic buffer layer. The high moment layer has a saturation magnetization greater than 2.3 T and a first corrosion potential. The magnetic buffer layer has a second corrosion potential less than the first corrosion potential. The magnetic seed layer is between the trailing shield and the nonmagnetic gap layer. The magnetic buffer layer is between the trailing shield and the high moment layer.

摘要翻译： 描述了一种用于提供磁读取换能器的方法和系统。 磁记录换能器包括对写磁极通电的写磁极，非磁性间隙，磁性种子层，后屏蔽和线圈。 写极被配置为写入介质。 非磁性间隙位于写极和磁性种子层之间。 磁性种子层包括高力矩层和磁性缓冲层。 高磁矩层位于非磁性间隙和磁性缓冲层之间。 高力矩层具有大于2.3T的饱和磁化强度和第一腐蚀电位。 磁缓冲层具有小于第一腐蚀电位的第二腐蚀电位。 磁性种子层位于尾部屏蔽和非磁性间隙层之间。 磁缓冲层位于后盾和高力矩层之间。

公开(公告)号：US08537501B2

公开(公告)日：2013-09-17

申请号：US13072890

申请日：2011-03-28

申请人： Mourad Benakli ,  Kirill Aleksandrovich Rivkin ,  James Gary Wessel ,  Dehua Han ,  Huaqing Yin ,  Scott Franzen ,  Jianhua Xue

发明人： Mourad Benakli ,  Kirill Aleksandrovich Rivkin ,  James Gary Wessel ,  Dehua Han ,  Huaqing Yin ,  Scott Franzen ,  Jianhua Xue

IPC分类号： G11B5/127

CPC分类号： G11B5/11 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/6082

摘要： A write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing surface, a leading surface that is opposite the trailing surface, and first and second surfaces; a trailing shield proximate the trailing surface of the magnetic write pole; first and second gaps proximate the first and second surfaces of the magnetic write pole; first and second side shields proximate the first and second gaps, each of the first and second side shields having a trailing shield surface; and first and second antiferromagnetic-coupling layers positioned between the trailing shield surfaces of the first and second side shields and the trailing shield.

公开(公告)号：US09123359B1

公开(公告)日：2015-09-01

申请号：US12976916

申请日：2010-12-22

申请人： Dehua Han ,  Ming Sun ,  Feng Liu ,  Jinqiu Zhang ,  Shaoping Li ,  Lieping Zhong ,  Xiaoqi Liu ,  Tao Pan

发明人： Dehua Han ,  Ming Sun ,  Feng Liu ,  Jinqiu Zhang ,  Shaoping Li ,  Lieping Zhong ,  Xiaoqi Liu ,  Tao Pan

IPC分类号： G11B5/127

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

摘要： A magnetic recording transducer for use in a data storage device is described. The transducer has a main writer pole and magnetic shields adjacent to the main writer pole. The magnetic shields include a first plated soft ferromagnetic layer, a second plated soft ferromagnetic layer, and an antiferromagnetic coupling (AFC) trilayer between the first plated soft ferromagnetic layer and the second plated soft ferromagnetic layer. The AFC trilayer includes a first AFC layer of sputtered ferromagnetic material; a second AFC layer of a nonmagnetic antiferromagnetic exchange material, and a third AFC layer of sputtered ferromagnetic material. Shields with AFC trilayers in leading, side, and/or trailing shields, as well as between shields are provided. A method of fabricating is also provided.

摘要翻译： 描述了用于数据存储装置的磁记录传感器。 传感器有一个主要的写入极和磁屏蔽，靠近主要的写入极。 磁屏蔽包括第一镀层软铁磁层，第二电镀软铁磁层和第一镀层软铁磁层与第二电镀软铁磁层之间的反铁磁耦合（AFC）三层。 AFC三层包括溅射铁磁材料的第一AFC层; 非磁性反铁磁交换材料的第二AFC层和溅射的铁磁材料的第三AFC层。 提供了前导，侧面和/或尾部屏蔽以及屏蔽之间的AFC三层屏蔽罩。 还提供了一种制造方法。

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。