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11. 发明申请

US20100067149A1 SYSTEM, METHOD AND APPARATUS FOR ONSET MAGNETIC OXIDE LAYER FOR HIGH PERFORMANCE PERPENDICULAR MAGNETIC RECORDING MEDIA 有权
标题翻译：用于高性能电磁记录介质的磁性氧化层的系统，方法和装置
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。

12. 发明申请

US20080062549A1 Method and system for testing of magnetic disks using F-BER 失效
标题翻译：使用F-BER测试磁盘的方法和系统
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。

13. 发明授权

US07173415B1 System, method, and apparatus for detecting signal-to-noise ratio decay in perpendicular magnetic recording 失效
标题翻译：用于检测垂直磁记录中信噪比衰减的系统，方法和装置
公开(公告)号：US07173415B1
公开(公告)日：2007-02-06
申请号：US11189594
申请日：2005-07-26
申请人： Shanlin Duan , Jizhong He , Zhupei Shi , Jane Jie Zhang
发明人： Shanlin Duan , Jizhong He , Zhupei Shi , Jane Jie Zhang
IPC分类号： G01R33/12
CPC分类号： G01R33/1207 , G11B5/012 , G11B5/02 , G11B5/09 , G11B5/4555 , G11B2005/001 , G11B2005/0021
摘要： A magnetic test module runs on a spin stand to detect amplitude decay and noise evolution at the same time. Signal-to-noise ratio (SNR) decay is directly measured. The recording performance is correlated better with SNR instead of signal only. The thermal stability of the system is evaluated more accurately with this SNR decay method. A heater is placed under the media disk, and a remote sensing thermometer and temperature controller form a subsystem to set up desired environmental temperature. The heater creates a heated band and the read/write head flies above the heated band. The temperature control system may be removed when SNR decay measurement is performed under room temperature.
摘要翻译：磁性测试模块在旋转架上运行，以同时检测振幅衰减和噪声演变。直接测量信噪比（SNR）衰减。记录性能与SNR而不是仅信号相关性更好。采用这种SNR衰减方法，更准确地评估了系统的热稳定性。将加热器放置在介质盘下方，并且遥感温度计和温度控制器形成子系统以建立所需的环境温度。加热器产生加热带，读/写头飞过加热带。当在室温下进行SNR衰减测量时，可以去除温度控制系统。

14. 发明授权

US07023658B1 Submicron track-width pole-tips for electromagnetic transducers 失效
标题翻译：用于电磁换能器的亚微米轨道宽度极尖
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。

15. 发明授权

US06496330B1 Magnetic write head having a splitcoil structure 有权
标题翻译：具有分离线圈结构的磁性写头
公开(公告)号：US06496330B1
公开(公告)日：2002-12-17
申请号：US09393056
申请日：1999-09-09
申请人： Billy W. Crue, Jr. , Zhupei Shi , Mark David Thomas , Lien-Chang Wang
发明人： Billy W. Crue, Jr. , Zhupei Shi , Mark David Thomas , Lien-Chang Wang
IPC分类号： G11B517
CPC分类号： G11B5/313 , G11B2005/0013 , Y10T29/49062
摘要： A magnetoresistive head having a split coil structure including multiple, similar coil layers separated by an insulator and joined at their ends to define parallel electrical paths. The coil passes through a magnetic yoke having an open end and a closed end and is electrically insulated from the yoke. The parallel electrical paths of the separate coil layers can each be modeled as a resistor in series with an inductor, each of the paths also being in parallel with a capacitor. The split coil has a much faster current rise time than a comparable single layer coil or than multiple coils connected in series. Since the coil current provides the magneto-motive force for imparting a signal on a passing recording medium, the decreased current rise time corresponds to an increased data recording rate.
摘要翻译：一种具有分离线圈结构的磁阻头，包括由绝缘体隔开并在其端部连接以限定平行电路径的多个相似的线圈层。线圈通过具有开口端和封闭端的磁轭，并且与磁轭电绝缘。单独线圈层的并联电路可以各自被建模为与电感器串联的电阻器，每个路径也与电容器并联。分离线圈的电流上升时间比可比较的单层线圈要快得多，或多个线圈串联连接。由于线圈电流提供用于在通过的记录介质上施加信号的磁动力，所以减小的电流上升时间对应于增加的数据记录速率。

16. 发明授权

US06466404B1 Magnetic read/write device with insulated coil layer recessed into pole 有权
公开(公告)号：US06466404B1
公开(公告)日：2002-10-15
申请号：US09994436
申请日：2001-11-26
申请人： Billy W. Crue, Jr. , Renuka Apparao , Zhupei Shi , Ken Young , Mark Seymour
发明人： Billy W. Crue, Jr. , Renuka Apparao , Zhupei Shi , Ken Young , Mark Seymour
IPC分类号： G11B5147
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/3123 , G11B5/313 , G11B5/3967 , G11B2005/3996
摘要： A write element for recording data on a magnetic medium includes a first pole and a second pole separated by a non-magnetic, electrically insulating write gap layer. In addition, a coil layer is recessed into the first pole and is electrically insulated from the first pole by a coil insulation layer, and form the second pole by a coil separation layer. The coil layer includes at least one coil turn, each of which are transversely separated from an adjacent coil turn by a coil turn divider. In some embodiments, the coil turn dividers are integral with and therefore formed of the same material as the first pole. The coil layer, first pole, and coil turn dividers are planarized before formation of the coil separation layer. Also, a second pole pedestal can be connected to the second pole at the air bearing surface, and separated from the first pole by the write gap layer. A highly heat conductive material can be disposed below the first pole as an undercoat. Such an undercoat can facilitate dispersion of heat that is generated by a current passing through the coil layer, away from other components of the write element. In addition, the write element can be formed in conjunction with a read element to form a read/write head. The read element can be formed above the write element, with the coil layer embedded in the first pole which is distal the read element.

17. 发明授权

US06304414B1 Thin film magnetic write head having an ultra-low stack height 有权
标题翻译：具有超低堆叠高度的薄膜磁性写头
公开(公告)号：US06304414B1
公开(公告)日：2001-10-16
申请号：US09357580
申请日：1999-07-20
申请人： Billy W. Crue, Jr. , Renuka Apparao , Zhupei Shi , Sean Yao
发明人： Billy W. Crue, Jr. , Renuka Apparao , Zhupei Shi , Sean Yao
IPC分类号： G11B531
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/313
摘要： A magnetoresistive write element having a greatly reduced stack height allowing construction of a smaller track width and tighter track width tolerances. The reduced stack height also produces improved magnetic flux flow properties in the write element leading to an improved magnetic fringing field in the write gap region The magnetoresistive write head includes an electrically conductive planar coil having a portion thereof extending between first and second poles. The first and second poles join one another to form a magnetic yoke which is closed at one end and open at the other. An insulation layer separates the coil from the first pole. Another layer of insulating material is formed into the coil, interspersed between the winds and having an upper surface which is flush with the upper surface of the coil. A thin layer of write gap material insulates the coil from the second pole. Since there is only a thin layer of write gap material between the coil and the second pole, rather than a thicker insulation layer, the topography of the second pole can be reduced. This lowers the stack height which allows the second pole to be constructed to define a smaller write gap with tighter tolerances.
摘要翻译：具有大大降低的堆叠高度的磁阻写入元件，允许构造更小的轨道宽度和更紧密的轨道宽度公差。减小的堆叠高度还在写入元件中产生改善的磁通流动特性，导致写入间隙区域中改善的磁边界场磁阻写入头包括导电平面线圈，其具有在第一和第二极之间延伸的部分。第一和第二极彼此结合形成磁轭，该磁轭在一端封闭并在另一端开放。绝缘层将线圈与第一极分开。绝缘材料的另一层形成为线圈，散布在风之间并且具有与线圈的上表面齐平的上表面。写入间隙材料的薄层将线圈与第二极绝缘。由于在线圈和第二极之间只有薄层的写间隙材料，而不是较厚的绝缘层，所以可以减小第二极的形貌。这降低了堆叠高度，这允许构造第二极点以限定更小的公差的写入间隙。

18. 发明申请

US20120113538A1 SIMULATING DISCRETE TRACK MEDIA WITH CONTINUOUS MEDIA FOR HEAD EVALUATION 有权
标题翻译：用连续介质模拟离散跟踪介质进行头部评估
公开(公告)号：US20120113538A1
公开(公告)日：2012-05-10
申请号：US12941482
申请日：2010-11-08
申请人： Kezhao Zhang , Jizhong He , Shanlin Duan , Jane Jie Zhang , Zhupei Shi
发明人： Kezhao Zhang , Jizhong He , Shanlin Duan , Jane Jie Zhang , Zhupei Shi
IPC分类号： G11B27/36
CPC分类号： G11B27/36 , G11B5/455 , G11B5/743 , G11B2220/2516
摘要： Approaches for a testing device for selecting a discrete track media (DTM) format for use with a particular head of a hard-disk drive (HDD). The testing device comprises a continuous magnetic-recording disk, rotatably mounted on a spindle, which stores data using a continuous media format. The testing device also comprises a testing module configured to simulate reading data, stored using a discrete track media (DTM) format, from the continuous magnetic-recording medium. Advantageously, testing time and cost is reduced as both discrete track media (DTM) disks and expensive discrete track media (DTM) recording testing hardware are not required to select the optimal a discrete track media (DTM) format for use with a particular head of a hard-disk drive (HDD). In addition, embodiments may be used to optimize features of the tracks of the DTM disk, such as the land to groove ratio.
摘要翻译：用于选择与硬盘驱动器（HDD）的特定头部一起使用的离散轨道介质（DTM）格式的测试设备的方法。测试装置包括可旋转地安装在主轴上的连续磁记录盘，其使用连续的媒体格式存储数据。测试装置还包括被配置成模拟从连续磁记录介质中使用离散轨道介质（DTM）格式存储的读取数据的测试模块。有利的是，测试时间和成本被降低，因为不需要离散轨道介质（DTM）盘和昂贵的离散轨道介质（DTM）记录测试硬件来选择最佳的离散轨道介质（DTM）格式，以用于特定的头硬盘驱动器（HDD）。此外，可以使用实施例来优化DTM盘的轨道的特征，例如陆地与凹槽之比。

19. 发明授权

US07271967B2 System and method for determining whether defect in perpendicular recording disk drive is from thermal asperity or defect in magnetically soft underlayer 失效
标题翻译：用于确定垂直记录盘驱动器中的缺陷是否由磁性软底层的热凹凸或缺陷的系统和方法
公开(公告)号：US07271967B2
公开(公告)日：2007-09-18
申请号：US10975259
申请日：2004-10-28
申请人： Zhupei Shi , Li Tang , Jane Jie Zhang , Shanlin Duan
发明人： Zhupei Shi , Li Tang , Jane Jie Zhang , Shanlin Duan
IPC分类号： G11B27/36 , G11B5/02
CPC分类号： G11B19/04 , G11B5/4555 , G11B20/1816
摘要： A method for determining whether a spike in a read back signal from a read head positioned over a perpendicular recording disk having a magnetically soft underlayer (SUL) is caused by a defect in the SUL or by a thermal asperity (TA). A first read back signal with the spike is obtained in the absence of a local magnetic field near the read head. Then, a permanent magnet or electromagnet is used to induce a small local magnetic field by the read head, and a second signal is obtained. If the signals are substantially similar, a thermal asperity is indicated. Otherwise a defect in the 13 magnetically soft underlayer of the disk is indicated.
摘要翻译：一种用于确定来自位于具有磁软底层（SUL）的垂直记录盘上的读头的回读信号中的尖峰是否由SUL中的缺陷或由热凹凸（TA）引起的方法。在读磁头附近没有局部磁场的情况下获得具有尖峰的第一回读信号。然后，使用永磁体或电磁体通过读取头来引起小的局部磁场，并获得第二信号。如果信号基本相似，则表示热不均匀性。否则表示磁盘的13个软磁性底层的缺陷。

20. 发明授权

US06829819B1 Method of forming a magnetoresistive device 失效
标题翻译：形成磁阻器件的方法
公开(公告)号：US06829819B1
公开(公告)日：2004-12-14
申请号：US10013431
申请日：2001-12-11
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： G11B5127
CPC分类号： G11B5/3912 , G11B5/09 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3163 , G11B5/3967 , Y10T29/49039 , Y10T29/49041 , Y10T29/49048 , Y10T29/4905 , Y10T29/49071 , Y10T29/49073
摘要： A magnetoresistive device having a first pole, a second pole, and a first tapered pole pedestal therebetween and magnetically connected to the second pole. The first tapered pole has a width that increases with increasing distance away from the air bearing surface, ABS. The magnetoresistive device can also include a second tapered pole pedestal magnetically connected to the first pole, and separated from the first tapered pole pedestal by a write gap. The second tapered pole pedestal has a width that increases with increasing distance away from the air bearing surface. A method of the present invention includes defining the trackwidth of a write element by lapping a tapered pole pedestal. More specifically, the trackwidth is given by a known taper angle, a zero throat width, and a throat height, wherein the throat height is controlled precisely by lapping.
摘要翻译：一种具有第一极，第二极和它们之间的第一锥形极基座并与第二极磁性连接的磁阻器件。第一锥形杆的宽度随着远离空气轴承表面ABS的距离而增加。磁阻器件还可以包括磁性连接到第一极的第二锥形极基座，并且通过写入间隙与第一锥形极基座分离。第二锥形极基座的宽度随着距离空气轴承表面的距离的增加而增加。本发明的方法包括通过研磨锥形极基座来定义写入元件的轨道宽度。更具体地，轨道宽度由已知的锥角，零喉部宽度和喉部高度给出，其中喉部高度通过研磨精确地控制。

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