公开(公告)号：US07508628B2

公开(公告)日：2009-03-24

申请号：US10976478

申请日：2004-10-29

申请人： Xiaodong Che ,  Hardayal Singh Gill ,  Wen-chien Hsiao ,  Yangsheng Luo ,  Xiaoyu Sui

发明人： Xiaodong Che ,  Hardayal Singh Gill ,  Wen-chien Hsiao ,  Yangsheng Luo ,  Xiaoyu Sui

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315

摘要： A magnetic structure for use in a magnetic recording head, the structure having improved resistance to stray field writing. The magnetic structure can be for example a magnetic shield or a return pole of a perpendicular write element. The structure includes a main body portion which may have a generally rectangular configuration, and first and second wing portions extending laterally from the sides of the body at or near the ABS. The wing portions have a depth measured perpendicular to the ABS that is significantly less than the depth of the body portion (preferably less than 25 percent of the body portion). The wing portions may also have notches formed in their ABS edges. The wings conduct flux from the ABS edge of the body portion and create a flux choking effect for magnetic flux flowing into the wings.

摘要翻译： 一种用于磁记录头的磁结构，该结构具有改进的对杂散场写入的抵抗能力。 磁性结构可以是例如垂直写入元件的磁屏蔽或返回极。 该结构包括主体部分，该主体部分可以具有大致矩形的构造，第一和第二翼部分在ABS身体处或ABS附近从主体的侧面横向延伸。 翼部具有垂直于ABS测量的深度，该深度明显小于主体部分的深度（优选小于主体部分的25％）。 翼部也可以在其ABS边缘中形成切口。 机翼从主体部分的ABS边缘引导通量，并产生流入机翼的磁通量的通量阻塞效应。

公开(公告)号：US20060092569A1

公开(公告)日：2006-05-04

申请号：US10976478

申请日：2004-10-29

申请人： Xiaodong Che ,  Hardayal Gill ,  Wen-chien Hsiao ,  Yangsheng Luo ,  Xiaoyu Sui

发明人： Xiaodong Che ,  Hardayal Gill ,  Wen-chien Hsiao ,  Yangsheng Luo ,  Xiaoyu Sui

IPC分类号： G11B5/10 ,  G11B5/60

CPC分类号： G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315

摘要： A magnetic structure for use in a magnetic recording head, the structure having improved resistance to stray field writing. The magnetic structure can be for example a magnetic shield or a return pole of a perpendicular write element. The structure includes a main body portion which may have a generally rectangular configuration, and first and second wing portions extending laterally from the sides of the body at or near the ABS. The wing portions have a depth measured perpendicular to the ABS that is significantly less than the depth of the body portion (preferably less than 25 percent of the body portion). The wing portions may also have notches formed in their ABS edges. The wings conduct flux from the ABS edge of the body portion and create a flux choking effect for magnetic flux flowing into the wings.

公开(公告)号：US20080158705A1

公开(公告)日：2008-07-03

申请号：US11648368

申请日：2006-12-28

申请人： Xiaodong Che ,  Wen-chien Hsiao ,  Yansheng Luo ,  Xiaoyu Sui

发明人： Xiaodong Che ,  Wen-chien Hsiao ,  Yansheng Luo ,  Xiaoyu Sui

IPC分类号： G11B27/36

CPC分类号： G11B27/36 ,  G11B5/3196 ,  G11B5/455 ,  G11B2220/2516

摘要： A write head tester is disclosed. The write head tester includes a rotatably coupled magnetic media having a stand-off thereover. In addition, a write head holder is fixedly coupled with the tester. The write head holder receives and electrically couples a removably coupleable write head such that the removably coupleable write head is capable of performing a write on the magnetic media. A read head is also fixedly coupled with the tester. The read head is utilized for performing a read on the magnetic media. Furthermore, an evaluator is provided for accessing a result of the read on the magnetic media and evaluating the removably coupleable write head based on the read.

摘要翻译： 公开了一种写入头测试器。 写入头测试器包括一个可旋转耦合的磁性介质，其中有一个支架。 此外，写头保持架与测试仪固定连接。 写头保持器接收并电耦合可移除地可耦合的写入头，使得可移除地可耦合的写入头能够对磁性介质执行写入。 读头也与测试仪固定连接。 读取头用于对磁性介质进行读取。 此外，提供评估器用于访问磁介质上的读取结果并基于读取来评估可拆卸地耦合的写入头。

公开(公告)号：US07154696B2

公开(公告)日：2006-12-26

申请号：US10777522

申请日：2004-02-11

申请人： Vladimir Nikitin ,  Savas Gider ,  Wen-chien Hsiao

发明人： Vladimir Nikitin ,  Savas Gider ,  Wen-chien Hsiao

IPC分类号： G11B5/60 ,  G11B21/21

CPC分类号： G11B5/3136 ,  G11B5/6005

摘要： A new structure for adjusting flying height using a magnetomechanical effect. A head includes a magnetomechanically active structure and a coil coupled to the magnetomechanically active structure, the magnetomechanically active structure responding to a magnetic field generated by the coil to expand and/or contract.

摘要翻译： 使用磁力机械效应调整飞行高度的新结构。 磁头包括磁机械有源结构和耦合到磁机械有源结构的线圈，响应于由线圈产生的用于扩展和/或收缩的磁场的磁机械有源结构。

公开(公告)号：US20050264912A1

公开(公告)日：2005-12-01

申请号：US10777522

申请日：2004-02-11

申请人： Vladimir Nikitin ,  Savas Gider ,  Wen-chien Hsiao

发明人： Vladimir Nikitin ,  Savas Gider ,  Wen-chien Hsiao

IPC分类号： G11B5/60 ,  G11B21/02

CPC分类号： G11B5/3136 ,  G11B5/6005

摘要： A new structure for adjusting flying height using a magnetomechanical effect. A head includes a magnetomechanically active structure and a coil coupled to the magnetomechanically active structure, the magnetomechanically active structure responding to a magnetic field generated by the coil to expand and/or contract.

摘要翻译： 使用磁力机械效应调整飞行高度的新结构。 磁头包括磁机械有源结构和耦合到磁机械有源结构的线圈，响应于由线圈产生的用于扩展和/或收缩的磁场的磁机械有源结构。

公开(公告)号：US20050243462A1

公开(公告)日：2005-11-03

申请号：US10837279

申请日：2004-04-30

申请人： Savas Gider ,  Wen-chien Hsiao

发明人： Savas Gider ,  Wen-chien Hsiao

IPC分类号： G11B5/23 ,  G11B5/31

CPC分类号： G11B5/3116

摘要： A method and apparatus for providing improved flux focusing in a write head is disclosed. The present invention uses a diamagnetic material to provide flux focusing in a storage device. An embodiment of the present invention includes diamagnetic material having a magnetic susceptibility substantially equal to or greater than 1×10−5. Another embodiment of the present invention includes diamagnetic material selected from a group comprising graphite and bismuth.

摘要翻译： 公开了一种用于在写入头中提供改进的磁通聚焦的方法和装置。 本发明使用反磁性材料在存储装置中提供聚焦。 本发明的一个实施方案包括具有基本上等于或大于1×10 -5的磁化率的抗磁性材料。 本发明的另一个实施方案包括选自包括石墨和铋的组的抗磁性材料。

公开(公告)号：US20060152849A1

公开(公告)日：2006-07-13

申请号：US11375160

申请日：2006-03-14

申请人： Wen-chien Hsiao ,  Edward Lee ,  Vladimir Nikitin ,  Samuel Yuan

发明人： Wen-chien Hsiao ,  Edward Lee ,  Vladimir Nikitin ,  Samuel Yuan

IPC分类号： G11B5/17

CPC分类号： G11B5/3136 ,  G11B5/012 ,  G11B5/17 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/40

摘要： Magnetic heads having write coil structures with reduced electrical resistances for reducing thermal protrusion are disclosed. In one illustrative example, a magnetic head includes a magnetic yoke; a write gap layer formed between upper and lower poles of the magnetic yoke; and a write coil having a plurality of coil layers. Each coil layer of the write coil extends continuously between the upper and the lower poles through a plane defined by the write gap layer. Preferably, the write coil is formed using a damascene process, such that each coil layer is wider than each coil separating layer. Such a structure provides for a relatively large amount of coil materials to be used, which reduces the coil's electrical resistance. This, in turn, reduces the heat generated by the write coils during operation. Further, either one or both of the lower and upper poles may include a horizontally laminated structure of alternating magnetic and non-magnetic dielectric layers to further reduce heating caused by eddy current losses. Since thermal protrusion is reduced, the fly height of magnetic head may be made relatively small with a reduced risk of head-to-disk crashes and disk scratches.