公开(公告)号：US20050024957A1

公开(公告)日：2005-02-03

申请号：US10631940

申请日：2003-07-30

申请人： Savas Gider ,  Wen-Chien Hsiao

发明人： Savas Gider ,  Wen-Chien Hsiao

IPC分类号： G11B5/10 ,  G11B5/105 ,  G11B5/17 ,  G11B5/31 ,  G11B5/40 ,  G11C7/00

CPC分类号： G11B5/3136 ,  G11B5/10 ,  G11B5/105 ,  G11B5/17 ,  G11B5/3103 ,  G11B5/3109 ,  G11B5/313 ,  G11B5/3133 ,  G11B5/40

摘要： A magnetic head for reading information from and writing information to a hard magnetic disk having reduced thermal protrusion at the air bearing surface. In some embodiments, a read-head portion of the magnetic head includes one or more read insulation layers, and a write-head portion of the magnetic head includes one or more write insulation layers. The magnetic head may optionally further include one or more insulation layers between the read-head portion and the write-head portion. One or more of these insulation layers includes a material with a negative thermal expansion characteristic, including but not limited to, carbon fiber, zirconium tungstate (Zr W2 O8), or hafnium tungstate (Hf W2 O8).

摘要翻译： 一种磁头，用于从具有减小的在空气轴承表面处的热突起的硬磁盘读取信息并向其写入信息。 在一些实施例中，磁头的读取头部分包括一个或多个读取绝缘层，磁头的写入头部分包括一个或多个写入绝缘层。 磁头可以可选地还包括在读取头部分和写入头部分之间的一个或多个绝缘层。 这些绝缘层中的一种或多种包括具有负热膨胀特性的材料，包括但不限于碳纤维，钨酸锆（Zr W2 O8）或钨酸铪（HfW 2 O 8）。

公开(公告)号：US20050024786A1

公开(公告)日：2005-02-03

申请号：US10629535

申请日：2003-07-29

申请人： Hardayal Gill ,  Wen-Chien Hsiao ,  Jih-Shiuan Luo

发明人： Hardayal Gill ,  Wen-Chien Hsiao ,  Jih-Shiuan Luo

IPC分类号： G11B5/127 ,  G11B5/33 ,  G11B5/39 ,  H01F10/32 ,  H01F41/30

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G11B5/3903 ,  G11B5/3932 ,  H01F10/3281 ,  H01F41/302

摘要： A method and apparatus for enhancing thermal stability, improving biasing and reducing damage from electrical surges in self-pinned abutted junction heads. A first self-pinned layer having a first magnetic orientation is provided, wherein the first self-pinned layer has a first end, a second end and central portion. A second self-pinned layer is formed over only the central portion of the first self-pinned layer and an interlayer is disposed between the first and second self-pinned layers. A free layer is formed in a central region over the second self-pinned layer. First and second hard bias layers are formed over the first and second ends of the first self-pinned layer respectively, the first and second hard bias layer abutting the free layer, the first and second end of the first self-pinned layer extending under the hard bias layers at the first and second ends.

摘要翻译： 一种用于增强热稳定性，改善偏压并减少自销接合接头中的电涌的损伤的方法和装置。 提供了具有第一磁性取向的第一自固位层，其中第一自固位层具有第一端，第二端和中心部分。 仅在第一自被钉扎层的中心部分上形成第二自固位层，并且中间层设置在第一和第二自固位层之间。 在第二自固位层上的中心区域形成自由层。 第一和第二硬偏压层分别形成在第一自固位层的第一和第二端上，第一和第二硬偏置层邻接自由层，第一自固位层的第一和第二端延伸在 在第一和第二端的硬偏压层。

公开(公告)号：US20050024783A1

公开(公告)日：2005-02-03

申请号：US10629319

申请日：2003-07-29

申请人： Hardayal Gill ,  Wen-Chien Hsiao ,  Jih-Shiuan Luo

发明人： Hardayal Gill ,  Wen-Chien Hsiao ,  Jih-Shiuan Luo

IPC分类号： G11B5/31 ,  G11B5/33 ,  G11B5/127

CPC分类号： G11B5/31

摘要： A method and apparatus for enhancing thermal stability, improving biasing and reducing damage from electrical surges in self-pinned abutted junction heads. The head includes a self-pinned layer, the self-pinned layer having a first end, a second end and central portion, a free layer disposed over the central portion of the self-pinned layer in a central region and a first and second hard bias layers formed over the first and second ends of the self-pinned layer respectively, the first and second hard bias layer abutting the free layer, the first and second end of the self-pinned layer extending under the hard bias layers at the first and second ends.

摘要翻译： 一种用于增强热稳定性，改善偏压并减少自销接合接头中的电涌的损伤的方法和装置。 头部包括自固位层，自固位层具有第一端，第二端和中心部分，自由层设置在中心区域中的自固位层的中心部分上，第一和第二硬 偏置层分别形成在自固位层的第一和第二端上，第一和第二硬偏置层邻接自由层，自固位层的第一和第二端在第一和第二硬质偏压层的下面延伸， 第二端

公开(公告)号：US20120075751A1

公开(公告)日：2012-03-29

申请号：US13314449

申请日：2011-12-08

申请人： Hardayal S. Gill ,  Werner J. Douglas ,  Wipul P. Jayasekara ,  Wen-Chien Hsiao

发明人： Hardayal S. Gill ,  Werner J. Douglas ,  Wipul P. Jayasekara ,  Wen-Chien Hsiao

IPC分类号： G11B5/11

CPC分类号： G11B5/3983 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3912 ,  G11B5/3929 ,  G11B5/398

摘要： A current to perpendicular to plane (CPP) magnetoresistance (MR) read head using current confinement proximal to an air bearing surface (ABS) is disclosed. A CPP MR read head includes a first shield, an MR sensor formed on the first shield, and a second shield contacting the MR sensor proximal to an ABS. The CPP MR read head further includes insulating material between the MR sensor and the second shield, where the insulating material is distal to the ABS to electrically isolate the MR sensor from the second shield distal to the ABS. Sense current injected from the second shield through the MR sensor and into the first shield is confined proximal to the ABS at a location where the second shield contacts the MR sensor.

摘要翻译： 公开了使用靠近空气轴承表面（ABS）的电流限制来垂直于平面（CPP）磁阻（MR）读取头的电流。 CPP MR读取头包括形成在第一屏蔽上的第一屏蔽，MR传感器和接近ABS的MR传感器的第二屏蔽。 CPP MR读取头还包括在MR传感器和第二屏蔽之间的绝缘材料，其中绝缘材料位于ABS的远侧，以将MR传感器与远离ABS的第二屏蔽电隔离。 从第二屏蔽件通过MR传感器注入并进入第一屏蔽层的感应电流在第二屏蔽件接触MR传感器的位置处被限制在ABS附近。

公开(公告)号：US07974047B2

公开(公告)日：2011-07-05

申请号：US12202675

申请日：2008-09-02

申请人： Hardayal S. Gill ,  Douglas J. Werner ,  Wen-Chien Hsiao ,  Wipul P. Jayasekara

发明人： Hardayal S. Gill ,  Douglas J. Werner ,  Wen-Chien Hsiao ,  Wipul P. Jayasekara

IPC分类号： G11B5/31

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11B2005/3996

摘要： A current to perpendicular to plane (CPP) differential magnetoresistance (DMR) read head using current confinement proximal to an air bearing surface (ABS) is disclosed. The CPP DMR read head includes a first electrically conductive lead, a first MR sensor formed on the first lead, and a non-magnetic electrically conductive spacer formed on the first MR sensor proximate to the ABS. The CPP DMR read head further includes insulating material on the first MR sensor distal to the ABS. A second MR sensor is formed in contact with the conductive spacer such that the second MR sensor is in electrical contact with the first MR sensor proximate to the ABS and is electrically isolated from the first MR sensor distal to the ABS. A second electrically conductive lead is in contact with the second MR sensor. Sense current injected into the first and the second MR sensor is confined proximate to the ABS.

摘要翻译： 公开了使用靠近空气轴承表面（ABS）的电流限制垂直于平面（CPP）差分磁阻（DMR）读头的电流。 CPP DMR读取头包括第一导电引线，形成在第一引线上的第一MR传感器和形成在靠近ABS的第一MR传感器上的非磁性导电间隔物。 CPP DMR读取头还包括远离ABS的第一MR传感器上的绝缘材料。 第二MR传感器形成为与导电间隔物接触，使得第二MR传感器与靠近ABS的第一MR传感器电接触，并且与远离ABS的第一MR传感器电隔离。 第二导电引线与第二MR传感器接触。 注入第一和第二MR传感器的感应电流被限制在接近ABS的位置。

公开(公告)号：US07821736B2

公开(公告)日：2010-10-26

申请号：US11399548

申请日：2006-04-06

申请人： Xiaodong Che ,  Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

发明人： Xiaodong Che ,  Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146

摘要： Write elements are discussed having a write pole and an associated trailing shield. A leading side of the trailing shield faces a trailing side of the write pole. The leading side of the trailing shield has a shape such that a center portion of the leading side has less of a separation from the trailing side of the write pole than track edge portions of the leading side of the trailing shield. An exemplary shape the leading side of the trailing shield may be a convex shape when viewed from the ABS. The shape of the leading side of the trailing shield causes the trailing shield to shunt less of the magnetic field from the trailing side of the write pole at the track edges so that the written transition at the track edge will not lag behind the written transition at the track center allowing for a straighter transition.

摘要翻译： 讨论了具有写极点和相关联的后屏蔽的写元件。 后挡板的前端面向写极的后侧。 后挡板的前侧具有这样的形状，使得前侧的中心部分比后挡板的前侧的轨道边缘部分具有比写入极的后侧更小的间隔。 当从ABS观察时，后护罩的前侧的示例性形状可以是凸形。 尾部屏蔽的前端的形状使得后屏蔽件在轨道边缘处从写入极的后侧分流较少的磁场，使得在轨道边缘处的写入的转变不会滞后于在 轨道中心允许更直接的过渡。

公开(公告)号：US20070247751A1

公开(公告)日：2007-10-25

申请号：US11412017

申请日：2006-04-25

申请人： Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

发明人： Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

IPC分类号： G11B5/147

CPC分类号： G11B5/3146 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3116

摘要： A magnetic structure for use in a magnetic head for avoiding wide angle track erasure and other forms of adjacent track interference. The magnetic structure includes a trailing shield having a specially configured back edge opposite the air bearing surface ABS. The magnetic shield has a shallow substantially constant throat height at a center portion. Then, the back edge of the shield tapers back away from the ABS in first and second intermediate portion located at either side of the center portion. These intermediate portions lead to first and second outer portions that have substantially constant throat heights that are larger than the throat height at the center region. The throat height at each of the laterally outer portions can be 1.5 to 5 times the throat height of the center portion. This configuration, chokes off stray fields that might be picked up by the outer portions of the shield preventing excessive magnetic flux from reaching the central portion of the shield where it might affect writing. In addition, the limited throat height of the outer portion (ie. the back edge of the outer portions does not keep tapering back away from the ABS) prevents the outer portions from picking up too much stray magnetic field, while also ensuring that sufficient magnetic material will be present to absorb desired magnetic field from the write pole during use.

摘要翻译： 用于磁头的磁结构，用于避免广角跟踪擦除和其他形式的相邻轨道干扰。 磁性结构包括后挡板，其具有与空气轴承表面ABS相对的特殊配置的后边缘。 磁屏蔽件在中心部分具有浅实质上恒定的喉部高度。 然后，屏蔽件的后边缘在位于中心部分两侧的第一和第二中间部分中从ABS逐渐变细。 这些中间部分导致第一和第二外部部分具有大于喉部高度在中心区域处大致恒定的喉部高度。 每个横向外部部分的喉部高度可以是中心部分的喉部高度的1.5至5倍。 这种构造可以消除可能由屏蔽外部拾取的杂散场，防止过多的磁通量到达屏蔽的中心部分，从而可能影响写入。 此外，外部部分的限制喉部高度（即，外部部分的后边缘不保持从ABS退回）防止外部部分拾取太多的杂散磁场，同时还确保足够的磁 将存在材料以在使用期间从写入极吸收期望的磁场。

公开(公告)号：US20070247750A1

公开(公告)日：2007-10-25

申请号：US11411590

申请日：2006-04-25

申请人： Wen-Chien Hsiao ,  Yimin Hsu ,  Edward Lee ,  Vladimir Nikitin ,  Katalin Pentek

发明人： Wen-Chien Hsiao ,  Yimin Hsu ,  Edward Lee ,  Vladimir Nikitin ,  Katalin Pentek

IPC分类号： G11B5/147

CPC分类号： G11B5/1278 ,  G11B5/3133 ,  G11B5/3136

摘要： A magnetic write pole having a structure that prevents thermally induced pole tip protrusion. The write head has a return pole with a magnetic pedestal formed at the air bearing surface (ABS) and a back gap at an end opposite the ABS. An electrically conductive write coil having a plurality of turns passes over the return pole. A fill layer of a material having a low coefficient of thermal expansion, such as alumina is disposed between the coil and the pedestal, and may extend over the top of the coil to the back gap. A photoresist coil insulation layer may be provided between the turns of the coil to insulate the turns of the coil from one another. The photoresist coil insulation layer can also extend to the back gap. A write pole, formed above the return pole and coil is magnetically connected with the back gap layer and return pole by a magnetic shaping layer.

摘要翻译： 具有防止热感应极尖突出的结构的磁性写入极。 写头具有在空气轴承表面（ABS）形成的磁性基座的返回极和与ABS相对的一端的后部间隙。 具有多个匝的导电写入线圈通过返回极。 具有低热膨胀系数的材料的填充层（例如氧化铝）设置在线圈和基座之间，并且可以在线圈的顶部延伸到后部间隙。 可以在线圈的匝之间设置光致抗蚀剂线圈绝缘层，以将线圈的匝彼此绝缘。 光致抗蚀剂线圈绝缘层也可以延伸到后隙。 在返回极和线圈之上形成的写极通过磁性成形层与后间隙层和返回极磁连接。

公开(公告)号：US20070236833A1

公开(公告)日：2007-10-11

申请号：US11399821

申请日：2006-04-07

申请人： Daniel Bedell ,  Wen-Chien Hsiao ,  Ming Jiang ,  Hieu Lam ,  Kim Lee ,  Jyh-Shuey Lo ,  Aron Pentek

发明人： Daniel Bedell ,  Wen-Chien Hsiao ,  Ming Jiang ,  Hieu Lam ,  Kim Lee ,  Jyh-Shuey Lo ,  Aron Pentek

IPC分类号： G11B5/147

CPC分类号： G11B5/3163 ,  Y10T29/49043

摘要： A method and apparatus for integrating a stair notch and a gap bump at a pole tip in a write head is disclosed. A protective plated layer is formed over the bump to prevent the bump form being damaged during formation of the notch at the pole tip. The flux from the second pole outside of the track will be effectively channeled to the first pole piece under the alumina bump.

摘要翻译： 公开了一种用于将写入头中的极尖处的台阶缺口和间隙凸起集成的方法和装置。 在凸起之上形成保护镀层，以防止在极尖处形成凹口期间凸起形状被损坏。 来自轨道外部的第二极的磁通将有效地引导到氧化铝凸块下方的第一极靴。

公开(公告)号：US20070211384A1

公开(公告)日：2007-09-13

申请号：US11744054

申请日：2007-05-03

申请人： Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin ,  Aron Pentek ,  Yi Zheng

发明人： Wen-Chien Hsiao ,  Yimin Hsu ,  Vladimir Nikitin ,  Aron Pentek ,  Yi Zheng

IPC分类号： G11B5/147

CPC分类号： G11B5/112 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

摘要： A perpendicular magnetic write head having a conformal wrap around trailing shield. The write head includes a write pole that can be configured with a trapezoidal shape as viewed from the Air Bearing Surface (ABS) and which includes a wrap around trailing magnetic shield. The magnetic shield has a trailing portion that is separated from the leading edge of the writ pole by a non-magnetic trailing gap, and has side shield portions that are separated from first and second side portions of the write pole by first and second non-magnetic side gaps. The magnetic shield can be configured with notches at either side of the trailing portion of magnetic shield. These notches can extend in the trailing direction by a distance that is preferably ¼ to 1 times the trailing gap thickness. The width of the straight, trailing portion of the shield is preferable ½ to 1 times of the main pole width.

摘要翻译： 垂直磁性写头，其具有围绕后屏蔽的保形包裹。 写入头包括写入极，其可以被配置为从空气轴承表面（ABS）观察到的梯形形状，并且包括围绕尾部磁屏蔽的包裹。 磁屏蔽具有通过非磁性拖尾间隙与写极的前缘分离的后部，并且具有通过第一和第二非隔离部分与写入极的第一和第二侧部分离的侧面屏蔽部分， 磁侧隙。 磁屏蔽可以在磁屏蔽的尾部的任一侧配置有凹口。 这些凹口可以在拖尾方向上延伸一段距离，优选为后缘间隙厚度的1/4至1倍。 屏蔽的直的后部的宽度优选为主极宽度的1/2至1倍。