公开(公告)号：US06333830B2

公开(公告)日：2001-12-25

申请号：US09189059

申请日：1998-11-09

申请人： Chuck Rose ,  Zhupei Shi ,  Kenneth E. Knapp

发明人： Chuck Rose ,  Zhupei Shi ,  Kenneth E. Knapp

IPC分类号： G11B517

CPC分类号： G11B5/3123 ,  G11B5/82

摘要： The present invention provides a thin film write head having an upper and lower pole structures and conductor turns forming a winding for generating magnetic flux. The conductor is formed with a non-planar top surface. The winding of the present invention may be formed of lower and upper turns. The upper turns may be formed with a non-planar top surface, a non-planar bottom surface, or both. It is preferred that the bottom surface of the upper conductor turns be coherent with the non-planar top surface of the lower conductor turns. The non-planar top surface may be formed by removing corners formed during deposition between a generally planar top surface and abutting side walls. The corners may be removed by ion milling to form the non-planar top surface. The conductor may be copper with the non-planar top surface having sloping facets. The thin film write head of the present invention may be utilized to provide an improved data storage and retrieval apparatus. The preferred embodiment provides reduced coil resistance thereby reducing Johnson Thermal Noise and power dissipation. It also allows for reduced yoke length and reduced stack height while providing low apex angles to expand and improve yoke material deposition thereby improving head response and operational frequency.

摘要翻译： 本发明提供一种薄膜写入头，其具有上和下极结构以及形成用于产生磁通的绕组的导体匝。 导体形成有非平面顶表面。 本发明的绕组可以由下匝和上匝构成。 上匝可以形成有非平面顶表面，非平面底表面或两者。 优选地，上导体的底表面与下导体匝的非平面顶表面相干。 可以通过去除在大致平坦的顶表面和邻接侧壁之间的沉积期间形成的拐角来形成非平面顶表面。 可以通过离子研磨去除拐角以形成非平面顶表面。 导体可以是铜，其中非平面顶表面具有倾斜面。 本发明的薄膜写入头可以用于提供改进的数据存储和检索装置。 优选实施例提供减小的线圈电阻，从而减少约翰逊热噪声和功率耗散。 它还允许减小磁轭长度和减小堆叠高度，同时提供较低的顶角以扩展并改善磁轭材料沉积，从而提高磁头响应和操作频率。

公开(公告)号：US07023658B1

公开(公告)日：2006-04-04

申请号：US09500380

申请日：2000-02-08

申请人： Kenneth E. Knapp ,  Ronald A. Barr ,  Zhupei Shi ,  Billy W. Crue, Jr.

发明人： Kenneth E. Knapp ,  Ronald A. Barr ,  Zhupei Shi ,  Billy W. Crue, Jr.

IPC分类号： G11B5/31 ,  G11B5/187 ,  G11B5/265 ,  G11B5/39

CPC分类号： G11B5/3116 ,  G11B5/313 ,  G11B5/3136 ,  G11B5/3163 ,  G11B5/3967

摘要： A trailing pole-tip for an electromagnetic transducer is formed as a layer oriented substantially perpendicular to other layers of the transducer, allowing the pole-tip to be made much thinner than conventional pole-tips. The novel pole-tip is formed on an edge or sidewall of a base layer instead of being formed on top of an existing layer. Potential errors in pole-tip thickness are much less than standard error tolerances for conventional pole-tip thickness. Having a greatly reduced pole-tip width significantly reduces the track width so that many more tracks can fit on a media surface, providing a large increase in areal density.

摘要翻译： 形成用于电磁换能器的拖尾极尖作为基本上垂直于换能器的其它层定向的层，允许极尖比常规杆尖薄得多。 新颖的极尖形成在基底层的边缘或侧壁上，而不是形成在现有层的顶部上。 极尖厚度的潜在误差远小于常规极尖厚度的标准误差公差。 具有极大降低的极尖宽度显着地减小了轨道宽度，使得更多的轨迹可以适合于介质表面，从而提供面密度的大幅增加。

公开(公告)号：US20110111261A1

公开(公告)日：2011-05-12

申请号：US12614598

申请日：2009-11-09

申请人： Xiaoping Bian ,  Jack Jyh-Kau Chang ,  Zhupei Shi

发明人： Xiaoping Bian ,  Jack Jyh-Kau Chang ,  Zhupei Shi

IPC分类号： G11B5/33 ,  G11B5/66 ,  B05D5/12

CPC分类号： G11B5/66 ,  G11B5/65 ,  G11B5/7325 ,  G11B5/738 ,  Y10T428/115

摘要： Perpendicular magnetic recording (PMR) media and methods of fabricating PMR media are described. The PMR media includes, among other layers, an underlayer, a first onset layer on the underlayer, a second onset layer on the first onset layer, and a perpendicular magnetic recording layer on the second onset layer. The second onset layer has a magnetic moment which is higher than both a magnetic moment of the first onset layer and a magnetic moment of the perpendicular magnetic recording layer.

摘要翻译： 描述了垂直磁记录（PMR）介质和制造PMR介质的方法。 除了其它层之外，PMR介质包括底层，底层上的第一起始层，第一起始层上的第二起始层和第二起始层上的垂直磁记录层。 第二起始层具有高于第一起始层的磁矩和垂直磁记录层的磁矩的磁矩。

公开(公告)号：US06944938B1

公开(公告)日：2005-09-20

申请号：US10976504

申请日：2004-10-29

申请人： Billy W. Crue, Jr. ,  Mark David Thomas ,  Zhupei Shi ,  Renuka Apparao

发明人： Billy W. Crue, Jr. ,  Mark David Thomas ,  Zhupei Shi ,  Renuka Apparao

IPC分类号： G11B5/127 ,  G11B5/39 ,  H04R31/00

CPC分类号： G11B5/39 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49071 ,  Y10T29/49073 ,  Y10T29/49798

摘要： A method of forming a head comprises forming a write transducer on a wafer, cutting the wafer to produce a slider bar with a cut surface, and planarizing the cut surface of the slider bar. Forming the write transducer can include forming a first pole layer and forming a first pole pedestal layer over the first pole layer, where the first pole pedestal layer includes a tapered portion defined by a first end having a nose width less than a desired final nose width, and a second end having a zero throat width greater than the desired final nose width. Planarizing the cut surface of the slider bar exposes the first pole pedestal layer until a width thereof approximately equals the desired final nose width.

摘要翻译： 形成头部的方法包括在晶片上形成写入传感器，切割晶片以产生具有切割表面的滑动条，并平滑化滑块的切割表面。 形成写传感器可以包括形成第一极层并在第一极层上形成第一极基座层，其中第一极基座层包括由第一端限定的锥形部分，第一端部的鼻部宽度小于期望的最终鼻部宽度 ，并且具有大于所需最终鼻宽度的零喉部宽度的第二端。 平滑化滑块的切割表面暴露第一极基座层，直到其宽度大致等于期望的最终鼻部宽度。

公开(公告)号：US06756071B1

公开(公告)日：2004-06-29

申请号：US10243401

申请日：2002-09-12

申请人： Zhupei Shi ,  Ming Mao ,  Qunwen Leng

发明人： Zhupei Shi ,  Ming Mao ,  Qunwen Leng

IPC分类号： B05D512

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3163 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/1121

摘要： A GMR spin valve is provided for reading a magnetic signal from a magnetic recording medium. The spin valve includes a non-magnetic layer such as for example copper, separated by first and second magnetic layers. The spin valve includes a pinned magnetic layer and a free magnetic layer, the resistance of the spin valve changing with the relative angle between the direction of magnetization of free and pinned layers. Extremely smooth surfaces are provided at the interfaces between the non-magnetic layer and the adjacent magnetic layers. This smooth interface greatly enhances the performance and reliability of the spin valve by allowing extremely tight control of the thickness of the non-magnetic layer and by preventing atomic diffusion between the non-magnetic and magnetic layers. This smooth interface is achieved by including a surfactant in the deposition of the non-magnetic layer.

摘要翻译： 提供用于从磁记录介质读取磁信号的GMR自旋阀。 自旋阀包括由第一和第二磁性层分离的非磁性层，例如铜。 自旋阀包括钉扎磁性层和自由磁性层，自旋阀的阻力随游离层和被钉扎层的磁化方向之间的相对角度而变化。 在非磁性层和相邻的磁性层之间的界面处提供非常平滑的表面。 这种平滑的界面通过非常严格地控制非磁性层的厚度并防止非磁性层和磁性层之间的原子扩散，大大提高了自旋阀的性能和可靠性。 通过在非磁性层的沉积中包括表面活性剂来实现该光滑界面。

公开(公告)号：US06633464B2

公开(公告)日：2003-10-14

申请号：US09209060

申请日：1998-12-09

申请人： Chih-Huang Lai ,  Zhupei Shi ,  Hua-Ching Tong ,  Robert E. Rottmayer ,  Charles W. Miller

发明人： Chih-Huang Lai ,  Zhupei Shi ,  Hua-Ching Tong ,  Robert E. Rottmayer ,  Charles W. Miller

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  H01L43/08 ,  H01L43/12 ,  Y10T29/49034 ,  Y10T29/49044

摘要： A magnetoresistive (MR) device includes a synthetic antiferromagnetic (AFM) layer having an Fe/FeSi/Fe construction. A first Fe layer of the synthetic AFM layer has a magnetization substantially in a first direction, while a second Fe layer of the synthetic AFM layer has a magnetization substantially in a second direction that is substantially antiparallel to the first direction. The magnetoresistive device can be a spin valve in which a first surface of the synthetic AFM layer is adjacent to a pinning layer, and a second surface of the synthetic AFM layer is adjacent to a spacer layer. Further, the spin valve includes a free layer that overlies the spacer, thereby being separated from the synthetic AFM layer by the spacer. The pinning layer, synthetic AFM layer, spacer, and free layer can be bounded by a first shield and a second shield to provide magnetic shielding of the spin valve sensor.

摘要翻译： 磁阻（MR）装置包括具有Fe / FeSi / Fe构造的合成反铁磁（AFM）层。 合成AFM层的第一Fe层具有基本上在第一方向上的磁化，而合成AFM层的第二Fe层具有基本上在基本上与第一方向反平行的第二方向上的磁化。 磁阻器件可以是自旋阀，其中合成AFM层的第一表面与钉扎层相邻，并且合成AFM层的第二表面与间隔层相邻。 此外，自旋阀包括覆盖间隔物的自由层，从而通过间隔物与合成AFM层分离。 钉扎层，合成AFM层，隔离层和自由层可以由第一屏蔽层和第二屏蔽层限定，以提供自旋阀传感器的磁屏蔽。

公开(公告)号：US06479096B1

公开(公告)日：2002-11-12

申请号：US09454202

申请日：1999-12-03

申请人： Zhupei Shi ,  Ming Mao ,  Qunwen Leng

发明人： Zhupei Shi ,  Ming Mao ,  Qunwen Leng

IPC分类号： B05D512

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3163 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/1121

摘要： A GMR spin valve is provided for reading a magnetic signal from a magnetic recording medium. The spin valve includes a non-magnetic layer such as for example copper, separated by first and second magnetic layers. The spin valve includes a pinned magnetic layer and a free magnetic layer, the resistance of the spin valve changing with the relative angle between the direction of magnetization of free and pinned layers. Extremely smooth surfaces are provided at the interfaces between the non-magnetic layer and the adjacent magnetic layers. This smooth interface greatly enhances the performance and reliability of the spin valve by allowing extremely tight control of the thickness of the non-magnetic layer and by preventing atomic diffusion between the non-magnetic and magnetic layers. This smooth interface is achieved by including a surfactant in the deposition of the non-magnetic layer.

摘要翻译： 提供用于从磁记录介质读取磁信号的GMR自旋阀。 自旋阀包括由第一和第二磁性层分离的非磁性层，例如铜。 自旋阀包括钉扎磁性层和自由磁性层，自旋阀的阻力随游离层和被钉扎层的磁化方向之间的相对角度而变化。 在非磁性层和相邻的磁性层之间的界面处提供非常平滑的表面。 这种平滑的界面通过非常严格地控制非磁性层的厚度并防止非磁性层和磁性层之间的原子扩散，大大提高了自旋阀的性能和可靠性。 通过在非磁性层的沉积中包括表面活性剂来实现该光滑界面。

公开(公告)号：US06233116B1

公开(公告)日：2001-05-15

申请号：US09192388

申请日：1998-11-13

申请人： Yingjian Chen ,  Zhupei Shi ,  Syed Hossain

发明人： Yingjian Chen ,  Zhupei Shi ,  Syed Hossain

IPC分类号： G11B5147

CPC分类号： G11B5/3109 ,  G11B5/3113 ,  G11B5/313 ,  G11B5/3156

摘要： The present invention provides a thin film write head having an improved laminated flux carrying structure and method of fabrication. The preferred embodiment provides laminated layers of: high moment magnetic material, and easily aligned high resistivity magnetic material. In the preferred embodiment, the easily aligned laminating layer induces uniaxial anisotropy, by exchange coupling, to improve uniaxial anisotropy in the high moment material. This allows deposition induced uniaxial anisotropy by DC magnetron sputtering and also provides improved post deposition annealing, if desired. It is preferred to laminate FeXN, such as FeRhN, or other crystalline structure material, with an amorphous alloy material, preferably Co based, such as CoZrCr. In the preferred embodiment, upper and lower pole structures may both be laminated as discussed above. Such laminated structures have higher Bs than structures with insulative laminates, and yokes and pole tips and may be integrally formed, if desired, because flux may travel along or across the laminating layers. The preferred embodiment of the present invention improves soft magnetic properties, reduces eddy currents, improves hard axis alignment while not deleteriously affecting the coercivity, permeability, and magnetostriction of the structure, thus allowing for improved high frequency operation.

摘要翻译： 本发明提供一种具有改进的层叠助焊剂携带结构和制造方法的薄膜写入头。 优选的实施例提供了叠层层：高力矩磁性材料和容易对准的高电阻率磁性材料。 在优选实施例中，容易对准的层压层通过交换耦合引起单轴各向异性，以提高高力矩材料中的单轴各向异性。 这允许通过DC磁控溅射沉积诱导的单轴各向异性，并且如果需要，还提供改进的后沉积退火。 优选将FeXN如FeRhN或其它晶体结构材料与非晶合金材料（优选Co基）如CoZrCr层压。 在优选实施例中，如上所述，可以将上极和下极结构层叠。 如果需要，这种层压结构具有比具有绝缘层压板的结构更高的Bs，并且轭和磁极尖端可以一体地形成，因为焊剂可以沿着或穿过层压层行进。 本发明的优选实施例提高了软磁性能，降低涡流，改善了硬轴对准，同时不会有害地影响结构的矫顽力，磁导率和磁致伸缩，从而改善了高频运行。

公开(公告)号：US20100067149A1

公开(公告)日：2010-03-18

申请号：US12210603

申请日：2008-09-15

申请人： Xiaoping Bian ,  Jyh-Kau Chang ,  Weikang Shen ,  Zhupei Shi ,  Kai Tang

发明人： Xiaoping Bian ,  Jyh-Kau Chang ,  Weikang Shen ,  Zhupei Shi ,  Kai Tang

IPC分类号： G11B5/54 ,  B05D5/12 ,  G11B5/66

CPC分类号： G11B5/667 ,  B82Y25/00 ,  B82Y40/00 ,  G11B5/66 ,  G11B5/82 ,  G11B5/8404 ,  H01F10/30 ,  H01F41/302

摘要： Perpendicular magnetic recording media has been enhanced by controlling the initial growth of magnetic oxide layers and increased magnetic isolation between the grains in the initial magnetic layer. An onset magnetic oxide layer is sputter deposited in an argon-oxygen gas mixture between the main CoPtCr-oxide magnetic layers and the underlying Ru layer. The insertion of the onset magnetic oxide layer enhances the coercivity of the oxide magnetic layers and also improves the nucleation field. The media signal-to-noise ratio and bit error rate also are significantly improved due to the improvement of the initial segregation of Co magnetic grains in the magnetic oxide layers.

摘要翻译： 通过控制磁性氧化物层的初始生长和增加初始磁性层中的晶粒之间的磁隔离，增强了垂直磁记录介质。 起始磁性氧化物层溅射沉积在主CoPtCr-氧化物磁性层和下面的Ru层之间的氩 - 氧气体混合物中。 开始的磁性氧化物层的插入增强了氧化物磁性层的矫顽力，并且还改善了成核场。 由于磁性氧化物层中Co磁性晶粒的初始偏析的改善，介质信噪比和误码率也显着提高。

公开(公告)号：US20080062549A1

公开(公告)日：2008-03-13

申请号：US11515164

申请日：2006-09-01

申请人： Shanlin Duan ,  Zhupei Shi ,  Li Tang ,  Jane Jie Zhang

发明人： Shanlin Duan ,  Zhupei Shi ,  Li Tang ,  Jane Jie Zhang

IPC分类号： G11B27/36 ,  G11B5/09

CPC分类号： G11B19/048

摘要： Spinstand test improvement that measures Functional Byte Error Rate (F-BER) of a disk. The F-BER is correlated to the BER of a disk. The F-BER test is faster than a BER test. The F-BER test is incorporated into a spinstand tester or the software associated with a spinstand tester.

摘要翻译： Spinstand测试改进，用于测量磁盘的功能字节错误率（F-BER）。 F-BER与磁盘的BER相关。 F-BER测试比BER测试更快。 F-BER测试被并入到一个纺锤体测试仪或与一个纺锤体测试仪相关联的软件中。