公开(公告)号：US08611046B2

公开(公告)日：2013-12-17

申请号：US12799131

申请日：2010-04-19

申请人： Yan Wu ,  Zhigang Bai ,  Moris Dovek ,  Cherng-Chyi Han ,  Min Li ,  Jianing Zhou ,  Jiun-Ting Lee ,  Min Zheng

发明人： Yan Wu ,  Zhigang Bai ,  Moris Dovek ,  Cherng-Chyi Han ,  Min Li ,  Jianing Zhou ,  Jiun-Ting Lee ,  Min Zheng

IPC分类号： G11B5/11 ,  G11B5/23 ,  G11B5/31

CPC分类号： G11B5/105 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163

摘要： A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a graded side shield that is conformal to the shape of the pole tip at an upper portion of the shield but not conformal to the pole tip at a lower portion. The shield includes a trailing shield, that is conformal to the trailing edge of the pole tip and may include a leading edge shield that magnetically connects two bottom ends of the graded side shield.

摘要翻译： 垂直磁记录（PMR）头被制造成具有通过分级侧屏蔽横向屏蔽的极尖，该平面侧屏蔽保护层在屏蔽的上部处与极尖的形状保持一致，但在下部不与极尖共形。 屏蔽件包括后挡板，其与电极尖端的后缘保持一致，并且可以包括磁性连接分级侧屏蔽件的两个底端的前缘屏蔽件。

公开(公告)号：US20110255196A1

公开(公告)日：2011-10-20

申请号：US12799131

申请日：2010-04-19

申请人： Yan Wu ,  Zhigang Bai ,  Moris Dovek ,  Cherng-Chyi Han ,  Min Li ,  Jianing Zhou ,  Jiun-Ting Lee ,  Min Zheng

发明人： Yan Wu ,  Zhigang Bai ,  Moris Dovek ,  Cherng-Chyi Han ,  Min Li ,  Jianing Zhou ,  Jiun-Ting Lee ,  Min Zheng

IPC分类号： G11B5/10 ,  G11B21/16

CPC分类号： G11B5/105 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163

摘要： A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a graded side shield that is conformal to the shape of the pole tip at an upper portion of the shield but not conformal to the pole tip at a lower portion. The shield includes a trailing shield, that is conformal to the trailing edge of the pole tip and may include a leading edge shield that magnetically connects two bottom ends of the graded side shield.

摘要翻译： 垂直磁记录（PMR）头被制造成具有通过分级侧屏蔽横向屏蔽的极尖，该平面侧屏蔽保护层在屏蔽的上部处与极尖的形状保持一致，但在下部不与极尖共形。 屏蔽件包括后挡板，其与电极尖端的后缘保持一致，并且可以包括磁性连接分级侧屏蔽件的两个底端的前缘屏蔽件。

公开(公告)号：US07241516B1

公开(公告)日：2007-07-10

申请号：US10792328

申请日：2004-03-03

申请人： B. Ramamurthy Acharya ,  Jianing Zhou ,  Gunn Choe ,  Min Zheng

发明人： B. Ramamurthy Acharya ,  Jianing Zhou ,  Gunn Choe ,  Min Zheng

IPC分类号： G11B5/66 ,  G11B5/70

CPC分类号： G11B5/667

摘要： An improved soft underlayer structure for perpendicular magnetic recording. The structure includes at least two soft underlayers separated by a non-magnetic spacer layer. The soft underlayer structure incorporates exchange coupling induced anisotropy for improved perpendicular magnetic recording properties, including an improved signal-to-noise ratio (SNR) and reduced adjacent track erasure.

摘要翻译： 用于垂直磁记录的改进的软底层结构。 该结构包括由非磁性间隔层隔开的至少两个软底层。 软底层结构包含交换耦合诱导各向异性以改善垂直磁记录性能，包括改进的信噪比（SNR）和减少的相邻轨道擦除。

公开(公告)号：US08287748B2

公开(公告)日：2012-10-16

申请号：US12654548

申请日：2009-12-23

申请人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Jianing Zhou ,  Min Li

发明人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Jianing Zhou ,  Min Li

IPC分类号： B44C1/22

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

摘要： A magnetic head includes: a pole layer including a track width defining portion and a wide portion; and an accommodation layer disposed on a bottom forming layer and having a groove that accommodates the pole layer. The groove includes a first portion for accommodating at least part of the track width defining portion, and a second portion for accommodating at least part of the wide portion. A manufacturing method for the magnetic head includes the steps of: forming a groove defining layer on a nonmagnetic layer that is intended to later become the accommodation layer; forming a mask that covers an area of the nonmagnetic layer where to form the first portion of the groove; etching the nonmagnetic layer so that the second portion of the groove is formed in the nonmagnetic layer; removing the mask; and taper-etching the nonmagnetic layer so that the first portion of the groove is formed in the nonmagnetic layer and the groove is thereby completed.

摘要翻译： 磁头包括：包括轨道宽度限定部分和宽部分的极层; 以及容纳层，其设置在底部形成层上并具有容纳极层的槽。 凹槽包括用于容纳轨道宽度限定部分的至少一部分的第一部分和用于容纳至少部分宽部分的第二部分。 磁头的制造方法包括以下步骤：在旨在稍后成为调节层的非磁性层上形成凹槽限定层; 形成覆盖形成所述槽的第一部分的非磁性层的区域的掩模; 蚀刻非磁性层，使得凹槽的第二部分形成在非磁性层中; 去除面膜; 并且对非磁性层进行锥形蚀刻，使得凹槽的第一部分形成在非磁性层中，从而完成凹槽。

公开(公告)号：US20110147343A1

公开(公告)日：2011-06-23

申请号：US12654548

申请日：2009-12-23

申请人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Jianing Zhou ,  Min Li

发明人： Hironori Araki ,  Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Jianing Zhou ,  Min Li

IPC分类号： G11B5/127

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

摘要： A magnetic head includes: a pole layer including a track width defining portion and a wide portion; and an accommodation layer disposed on a bottom forming layer and having a groove that accommodates the pole layer. The groove includes a first portion for accommodating at least part of the track width defining portion, and a second portion for accommodating at least part of the wide portion. A manufacturing method for the magnetic head includes the steps of; forming a groove defining layer on a nonmagnetic layer that is intended to later become the accommodation layer; forming a mask that covers an area of the nonmagnetic layer where to form the first portion of the groove; etching the nonmagnetic layer so that the second portion of the groove is formed in the nonmagnetic layer; removing the mask; and taper-etching the nonmagnetic layer so that the first portion of the groove is formed in the nonmagnetic layer and the groove is thereby completed.

摘要翻译： 磁头包括：包括轨道宽度限定部分和宽部分的极层; 以及容纳层，其设置在底部形成层上并具有容纳极层的槽。 凹槽包括用于容纳轨道宽度限定部分的至少一部分的第一部分和用于容纳至少部分宽部分的第二部分。 磁头的制造方法包括以下步骤： 在非磁性层上形成凹槽限定层，所述非磁性层旨在稍后成为所述容纳层; 形成覆盖形成所述槽的第一部分的非磁性层的区域的掩模; 蚀刻非磁性层，使得凹槽的第二部分形成在非磁性层中; 去除面膜; 并且对非磁性层进行锥形蚀刻，使得凹槽的第一部分形成在非磁性层中，从而完成凹槽。

公开(公告)号：US20150233859A1

公开(公告)日：2015-08-20

申请号：US14622544

申请日：2015-02-13

申请人： Peng Zhu ,  Kenneth O'Brien ,  Jianing Zhou ,  Yongliang Li

发明人： Peng Zhu ,  Kenneth O'Brien ,  Jianing Zhou ,  Yongliang Li

IPC分类号： G01N27/22

CPC分类号： H04R5/04 ,  H04R2420/05

摘要： This document discusses, among other things, an impedance detection circuit, method, and integrated circuit, comprising a ramp-up current generation circuit and an impedance determining circuit, wherein the ramp-up current generation circuit is configured to input a ramp-up current including n breaks to a port of a device where the ramp-up current generation circuit is disposed, to which port an external device is connected, and wherein the impedance determining circuit is configured to detect an impedance of the external device in each break time period of the ramp-up current input by the ramp-up current generation circuit until the impedance of the external device is acquired by detection in the last break time period of the n breaks.

摘要翻译： 本文件还讨论了包括斜坡上升电流产生电路和阻抗确定电路的阻抗检测电路，方法和集成电路，其中斜坡上升电流产生电路被配置为输入斜坡上升电流 包括n个到设置有斜坡上升电流产生电路的装置的端口，连接到外部装置的端口，并且其中阻抗确定电路被配置为在每个断开时间段内检测外部装置的阻抗 通过斜坡上升电流产生电路输入的斜升电流，直到通过在n个断点的最后断开时间段中的检测来获取外部设备的阻抗。

公开(公告)号：US20070217074A1

公开(公告)日：2007-09-20

申请号：US11686865

申请日：2007-03-15

申请人： Jianing Zhou ,  B. Ramamurthy Acharya ,  E. Noel Abarra ,  Gunn Choe

发明人： Jianing Zhou ,  B. Ramamurthy Acharya ,  E. Noel Abarra ,  Gunn Choe

IPC分类号： G11B5/82

CPC分类号： G11B5/82 ,  G11B5/667

摘要： A perpendicular recording medium having a perpendicular magnetic recording layer and a magnetically soft underlayer structure disposed beneath the recording layer. The soft underlayer structure includes at least first and second soft magnetic layers having different magnetic permeabilities to create a magnetic permeability gradient in the soft underlayer structure. One or more of the soft magnetic layers can be anti-parallel coupled. The soft underlayer structure of the present invention having a magnetic permeability gradient advantageously leads to reduced adjacent track erasure (ATE) while maintaining good overwrite (OW) properties.

摘要翻译： 一种垂直记录介质，其具有设置在记录层下方的垂直磁记录层和磁软底层结构。 软底层结构包括至少具有不同磁导率的第一和第二软磁层，以在软底层结构中产生磁导率梯度。 一个或多个软磁性层可以是反平行耦合的。 具有磁导率梯度的本发明的软底层结构有利地导致减少的相邻轨迹擦除（ATE），同时保持良好的重写（OW）特性。

公开(公告)号：US20130022842A1

公开(公告)日：2013-01-24

申请号：US13620324

申请日：2012-09-14

申请人： Jianing Zhou ,  B. Ramamurthy Acharya ,  E. Noel Abarra ,  Gunn Choe

发明人： Jianing Zhou ,  B. Ramamurthy Acharya ,  E. Noel Abarra ,  Gunn Choe

IPC分类号： G11B5/667

CPC分类号： G11B5/82 ,  G11B5/667

摘要： A perpendicular recording medium having a perpendicular magnetic recording layer and a magnetically soft underlayer structure disposed beneath the recording layer. The soft underlayer structure includes at least first and second soft magnetic layers having different magnetic permeabilities to create a magnetic permeability gradient in the soft underlayer structure. One or more of the soft magnetic layers can be antiparallel coupled. The soft underlayer structure of the present invention having a magnetic permeability gradient advantageously leads to reduced adjacent track erasure (ATE) while maintaining good overwrite (OW) properties.

摘要翻译： 一种垂直记录介质，其具有设置在记录层下方的垂直磁记录层和磁软底层结构。 软底层结构包括至少具有不同磁导率的第一和第二软磁层，以在软底层结构中产生磁导率梯度。 一个或多个软磁层可以是反平行耦合的。 具有磁导率梯度的本发明的软底层结构有利地导致减少的相邻轨迹擦除（ATE），同时保持良好的重写（OW）特性。

公开(公告)号：US08277962B2

公开(公告)日：2012-10-02

申请号：US12879849

申请日：2010-09-10

申请人： Jianing Zhou ,  B. Ramamurthy Acharya ,  E. Noel Abarra ,  Gunn Choe

发明人： Jianing Zhou ,  B. Ramamurthy Acharya ,  E. Noel Abarra ,  Gunn Choe

IPC分类号： G11B5/82

CPC分类号： G11B5/82 ,  G11B5/667

摘要： A perpendicular recording medium having a perpendicular magnetic recording layer and a magnetically soft underlayer structure disposed beneath the recording layer. The soft underlayer structure includes at least first and second soft magnetic layers having different magnetic permeabilities to create a magnetic permeability gradient in the soft underlayer structure. One or more of the soft magnetic layers can be anti-parallel coupled. The soft underlayer structure of the present invention having a magnetic permeability gradient advantageously leads to reduced adjacent track erasure (ATE) while maintaining good overwrite (OW) properties.

摘要翻译： 一种垂直记录介质，其具有设置在记录层下方的垂直磁记录层和磁软底层结构。 软底层结构包括至少具有不同磁导率的第一和第二软磁层，以在软底层结构中产生磁导率梯度。 一个或多个软磁性层可以是反平行耦合的。 具有磁导率梯度的本发明的软底层结构有利地导致减少的相邻轨迹擦除（ATE），同时保持良好的重写（OW）特性。

公开(公告)号：US20100328818A1

公开(公告)日：2010-12-30

申请号：US12879849

申请日：2010-09-10

申请人： Jianing Zhou ,  B. Ramamurthy Acharya ,  E. Noel Abarra ,  Gunn Choe

发明人： Jianing Zhou ,  B. Ramamurthy Acharya ,  E. Noel Abarra ,  Gunn Choe

IPC分类号： G11B5/82

CPC分类号： G11B5/82 ,  G11B5/667

摘要： A perpendicular recording medium having a perpendicular magnetic recording layer and a magnetically soft underlayer structure disposed beneath the recording layer. The soft underlayer structure includes at least first and second soft magnetic layers having different magnetic permeabilities to create a magnetic permeability gradient in the soft underlayer structure. One or more of the soft magnetic layers can be anti-parallel coupled. The soft underlayer structure of the present invention having a magnetic permeability gradient advantageously leads to reduced adjacent track erasure (ATE) while maintaining good overwrite (OW) properties.

摘要翻译： 一种垂直记录介质，其具有设置在记录层下方的垂直磁记录层和磁软底层结构。 软底层结构包括至少具有不同磁导率的第一和第二软磁层，以在软底层结构中产生磁导率梯度。 一个或多个软磁性层可以是反平行耦合的。 具有磁导率梯度的本发明的软底层结构有利地导致减少的相邻轨迹擦除（ATE），同时保持良好的重写（OW）特性。