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1.发明授权Thin film magnetic disk having reactive element doped refractory metal seed layer 失效具有反应性元素掺杂难熔金属种子层的薄膜磁盘公开(公告)号：US06174582B1
公开(公告)日：2001-01-16
申请号：US09020151
申请日：1998-02-06
申请人： Xiaoping Bian , Shanlin Duan , Jinshan Li , Mohammad Mirzamaani
发明人： Xiaoping Bian , Shanlin Duan , Jinshan Li , Mohammad Mirzamaani
IPC分类号： G11B566
CPC分类号： G11B5/732 , G11B5/7325 , G11B5/8404 , Y10S428/90 , Y10T428/12465 , Y10T428/265
摘要： A method of fabricating a thin film magnetic disk including depositing a seed layer of a refractory metal such as tantalum, Cr, Nb, W, V, or Mo and a reactive element such as N or O; depositing a nonmagnetic underlayer onto the seed layer; and depositing a magnetic layer is disclosed. Also disclosed is a thin film magnetic disk having a substrate; a seed layer comprising tantalum and at least about 1 atomic-% of nitrogen or oxygen; an underlayer comprising Cr or an alloy of chromium deposited onto the seed layer, the underlayer preferably having a preferred orientation of [200]; and a magnetic layer deposited onto the underlayer, the magnetic layer preferably having a preferred orientation of [11{overscore (2)}0]. Also disclosed is a disk drive using the thin film magnetic disk of the invention.
摘要翻译： 一种制造薄膜磁盘的方法，包括沉积诸如钽，Cr，Nb，W，V或Mo的难熔金属种子层和诸如N或O的反应性元件; 将非磁性底层沉积到种子层上; 并且公开了沉积磁性层。 还公开了具有基板的薄膜磁盘; 包含钽和至少约1原子％的氮或氧的种子层; 包含Cr或沉积在种子层上的铬的合金的底层，底层优选具有[200]的优选取向; 和沉积在底层上的磁性层，磁性层优选地具有优选取向为[11（超芯（2）} 0]。 还公开了使用本发明的薄膜磁盘的磁盘驱动器。
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2.发明授权Seed layer and underlayer with high and low oxygen concentration portions for hand disk magnetic recording medium on a glass substrate 失效在玻璃基板上的手盘磁记录介质的种子层和具有高和低氧浓度部分的底层公开(公告)号：US06413608B1
公开(公告)日：2002-07-02
申请号：US09336641
申请日：1999-06-18
IPC分类号： G11B566
CPC分类号： G11B5/732 , C23C14/185 , G11B5/7325 , Y10S428/90 , Y10T428/24942 , Y10T428/265
摘要： The thin film magnetic disk of the present invention includes a non-metallic substrate having a seed layer deposited on the substrate, an underlayer deposited upon the seed layer composed of a chromium alloy having a relatively high oxygen concentration portion of from 2,000 ppm to 20,000 ppm and preferably approximately 4,000 ppm to 12,000 ppm, followed by a relatively low oxygen concentration portion of from 0-2,000 ppm, and preferably from 500 ppm to 1,500 ppm and a magnetic layer that is deposited upon the underlayer. The underlayer total thickness is in the range of from approximately 250 Å to approximately 700 Å with a preferred thickness of approximately 450 Å, wherein approximately half of the underlayer thickness is the high oxygen concentration portion and half is the low oxygen concentration portion.
摘要翻译： 本发明的薄膜磁盘包括具有沉积在基板上的种子层的非金属基板，沉积在由具有2000ppm至20,000ppm的较高氧浓度部分的铬合金构成的种子层的底层 优选为约4,000ppm〜12,000ppm，其次为相对较低的氧浓度部分为0〜2,000ppm，优选为500ppm〜1500ppm，以及沉积在底层上的磁性层。 底层总厚度在约250至约700的范围内，优选的厚度约为450，其中下层厚度的大约一半是高氧浓度部分，一半是低氧浓度部分。
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公开(公告)号：US6143388A
公开(公告)日：2000-11-07
申请号：US976565
申请日：1997-11-24
CPC分类号： G11B5/732 , G11B5/656 , G11B5/66 , G11B5/7325 , Y10S428/90 , Y10T428/265
摘要： A thin film disk and a disk drive using the thin film disk are described. The disk has an onset layer between the underlayer and the boron containing magnetic layer, for example. The onset layer of the invention is useful because the boron containing magnetic layer material resists being deposited with the C-axis in plane. The onset layer material is selected to promote an in-plane C-axis orientation. When a boron containing magnetic layer is deposited on the onset layer the resulting in-plane PO is improved. The preferred onset layer is of hexagonal closed pack structured material which may be magnetic or nonmagnetic. Materials which are usable for the onset layer include a wide range of pure elements and cobalt alloys such as CoCr, CoPtCr, CoPtCrTa and CoCrB. The onset layer is particularly useful in allowing a ferromagnetic cobalt (Co) alloy containing a relatively high chromium and boron content to be deposited on nonmetallic substrates with the C-axis in the plane of disk without the need for negative bias during the sputtering of the underlayer.
摘要翻译： 描述使用薄膜盘的薄膜盘和磁盘驱动器。 例如，盘在底层和含硼磁性层之间具有起始层。 本发明的起始层是有用的，因为含硼磁性层材料抵抗C平面上的沉积。 选择起始层材料以促进面内C轴取向。 当含硼磁性层沉积在起始层上时，所得到的面内PO得到改善。 优选的起始层是可以是磁性或非磁性的六边形封闭包装结构材料。 可用于起始层的材料包括宽范围的纯元素和钴合金，例如CoCr，CoPtCr，CoPtCrTa和CoCrB。 起始层特别适用于允许含有相对较高的铬和硼含量的铁磁性钴（Co）合金沉积在非金属基体上，其中C轴在盘平面中，而不需要在溅射期间的负偏压 底层
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公开(公告)号：US20110149706A1
公开(公告)日：2011-06-23
申请号：US12646831
申请日：2009-12-23
申请人： Shanlin Duan , Jizhong He , John S. Hopkins , Kenneth E. Johnson
发明人： Shanlin Duan , Jizhong He , John S. Hopkins , Kenneth E. Johnson
CPC分类号： G11B5/40 , G11B5/8404 , G11B20/10203 , G11B20/1816 , G11B27/36 , G11B2220/2516
摘要： A tool for testing a magnetic disk for use in a magnetic disk drive. The tool detects surface defects or asperities by detecting a change in electrical resistance corresponding to a temperature change in a thermally sensitive layer. The apparatus includes a slider body having a thermally insulating layer formed on an air bearing surface of the slider body and a thermal sensor layer formed on the thermally insulating layer. The thermally insulating layer prevents thermal heat spikes in the thermal sensor layer (such as resulting from contact with an asperity) from dissipating quickly into the slider body itself. The thermal sensor layer is a material that exhibits a change in electrical resistance in response to a change in temperature and is preferably a PTC thermistor material which exhibits a large change in electrical resistance when a transition temperature has been reached.
摘要翻译： 用于测试用于磁盘驱动器的磁盘的工具。 该工具通过检测对应于热敏层的温度变化的电阻变化来检测表面缺陷或粗糙度。 该装置包括：滑动体，其具有形成在滑块体的空气轴承表面上的绝热层和形成在绝热层上的热传感器层。 隔热层防止热传感器层中的热热尖峰（例如由于与粗糙度的接触而导致的））快速消散到滑块体本身。 热传感器层是响应于温度变化而呈现电阻变化的材料，优选是当达到转变温度时电阻变化很大的PTC热敏电阻材料。
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5.发明申请公开(公告)号：US20110019298A1
公开(公告)日：2011-01-27
申请号：US12508363
申请日：2009-07-23
申请人： Shanlin Duan , Zhen Jin , Jane Jie Zhang , Kazhao Zhang
发明人： Shanlin Duan , Zhen Jin , Jane Jie Zhang , Kazhao Zhang
IPC分类号： G11B27/36
摘要： Magnetic disk drive systems and associated methods are described for testing magnetic disk performance for certification with a plurality of magnetic disk drive systems prior to installation. The test system may position a slider at a first spacing between the magnetic disk in the slider and simulate the recording performance of a disk drive system with the magnetic disk at the first spacing. The disk drive test system may then transfer a control signal to a heating element in the slider to move the slider to a different spacing between the magnetic disk and the slider to simulate the recording performance of another disk drive system. The test system may, thus, use a single slider to certify a magnetic disk with a plurality of disk drive systems.
摘要翻译： 描述了磁盘驱动器系统和相关方法，用于在安装之前用多个磁盘驱动器系统测试用于认证的磁盘性能。 测试系统可以将滑块定位在滑块中的磁盘之间的第一间隔处，并以第一间距模拟磁盘驱动器系统的记录性能。 然后，磁盘驱动器测试系统可以将控制信号传送到滑块中的加热元件，以将滑块移动到磁盘和滑块之间的不同间隔，以模拟另一磁盘驱动器系统的记录性能。 因此，测试系统可以使用单个滑动器来证实具有多个磁盘驱动器系统的磁盘。
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6.发明授权System, method, and apparatus for glide head calibration with enhanced PZT channel for very low qualification glide heights 失效用于滑坡头校准的系统，方法和装置，具有增强的PZT通道，用于非常低的资格滑行高度公开(公告)号：US07121133B2
公开(公告)日：2006-10-17
申请号：US10857195
申请日：2004-05-28
申请人： Norman Chu , Shanlin Duan , Patricia Galindo , Hang Fai Ngo , Yu Lo , Nalin Zhou
发明人： Norman Chu , Shanlin Duan , Patricia Galindo , Hang Fai Ngo , Yu Lo , Nalin Zhou
IPC分类号： G01B7/34
CPC分类号： G11B5/6005 , G11B5/455
摘要： A glide head calibration technique uses two fly height calibrations on a disk media certifier. The first calibration point uses a spin down on bump technique at a first height, and the second calibration point uses a spin down on disk media roughness at a second lower height. With two height data points, a fly height curve of each glide head is approximated very accurately. Once the fly height curve is derived for each head, any fly height can be dialed-in by the disk media certifier for glide testing. This technique achieves glide fly heights between about 4 nm and 8 nm and does so with improved tolerances.
摘要翻译： 滑动头校准技术在磁盘介质验证器上使用两个飞行高度校准。 第一个校准点在第一个高度上使用一个旋转凹凸技术，第二个校准点在第二个较低高度的磁盘介质粗糙度上使用旋转。 使用两个高度数据点，每个滑行头的飞行高度曲线非常准确地近似。 一旦为每个头部导出了飞行高度曲线，则可以通过磁盘媒体验证者拨打任何飞行高度进行滑行测试。 该技术实现了约4nm和8nm之间的滑翔飞行高度，并且具有改进的公差。
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7.发明授权公开(公告)号：US06407891B1
公开(公告)日：2002-06-18
申请号：US09317808
申请日：1999-05-24
IPC分类号： G11B539
CPC分类号： G11B5/012 , G11B5/02 , G11B5/17 , G11B5/313 , G11B5/3967 , G11B23/0007
摘要： The present invention is a read/write head for writing information to magnetic media and reading information from magnetic media. It includes a write head for writing information onto magnetic media, a read head for reading information from the magnetic media, and an electrical circuit element that is disposed proximate the read head that functions to generate an electromagnetic field at the read head that is generally oppositely directed to the electromagnetic field generated by the write head. The method for operating the read/write head in a hard disk drive, includes the steps of writing data onto a hard disk, while simultaneously generating an electromagnetic field at the read head that is directed oppositely to the electromagnetic field generated by the write head.
摘要翻译： 本发明是一种用于向磁性介质写入信息并从磁性介质读取信息的读/写头。 它包括用于将信息写入磁性介质的写入头，用于从磁性介质读取信息的读取头，以及设置在读取头附近的电路元件，该电路元件用于在读取头处大致相反地产生电磁场 指向写头产生的电磁场。 用于在硬盘驱动器中操作读/写头的方法包括以下步骤：将数据写入硬盘，同时在读头处产生与写头产生的电磁场相反的电磁场。
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8.发明授权Method and apparatus for precise measurement of pressure dependence of head fly height using transitional thermal signals 失效使用过渡热信号精确测量头部飞行高度的压力依赖性的方法和装置公开(公告)号：US06314814B1
公开(公告)日：2001-11-13
申请号：US09516369
申请日：2000-03-01
申请人： James Hammond Brannon , Shanlin Duan , Wai Cheung Leung , Yan Liu , Li Tang
发明人： James Hammond Brannon , Shanlin Duan , Wai Cheung Leung , Yan Liu , Li Tang
IPC分类号： G01L900
CPC分类号： G11B5/6005 , G11B5/58
摘要： A method and apparatus for precise measurement of pressure dependence of head fly height using transitional thermal signals is disclosed. A slider is positioned relative to a rotating a disk having at least one laser bump. Calibration data is gathered by decreasing the pressure and measuring the fly height until a contact positive TA signal is detected. A non-contact negative TA signal is then normalized using the gathered calibration data. The TA signal amplitude may then be used to ascertain the fly height and pressure for a head.
摘要翻译： 公开了使用过渡热信号精确测量头部飞行高度的压力依赖性的方法和装置。 滑块相对于具有至少一个激光凸块的旋转盘定位。 通过降低压力和测量飞行高度来收集校准数据，直到检测到接触正的TA信号。 然后使用收集的校准数据对非接触负TA信号进行归一化。 然后可以使用TA信号幅度来确定头部的飞行高度和压力。
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公开(公告)号：US08133530B2
公开(公告)日：2012-03-13
申请号：US12220238
申请日：2008-07-22
申请人： Shanlin Duan , Kenneth Johnson , Owen Melroy
发明人： Shanlin Duan , Kenneth Johnson , Owen Melroy
IPC分类号： B05D5/12
CPC分类号： G11B5/82 , G11B5/64 , G11B5/7325 , G11B5/855
摘要： One-sided magnetic media for a hard disk drive. Methods are implemented to create a magnetic media with only one surface capable of recording data. The second surface is a non-data recording side of the media and is constructed so that it does not interfere with the recording properties of the recording side or the structural usefulness of the media. Additionally, the second surface can be a low quality surface capable of limited magnetic recording.
摘要翻译： 用于硬盘驱动器的单面磁性介质。 实现方法来创建仅具有能够记录数据的一个表面的磁介质。 第二表面是介质的非数据记录侧，并且被构造成使其不干扰记录侧的记录特性或介质的结构有用性。 此外，第二表面可以是能够限制磁记录的低质量表面。
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10.发明授权公开(公告)号：US07946156B2
公开(公告)日：2011-05-24
申请号：US11964688
申请日：2007-12-26
申请人： Shanlin Duan , Jizhong He , Bruno Marchon , Ullal V. Nayak
发明人： Shanlin Duan , Jizhong He , Bruno Marchon , Ullal V. Nayak
CPC分类号： G11B5/455 , G11B5/3136
摘要： Glide test systems and associated methods are described. A glide test system includes a glide test head that is flown over the surface of a recording disk to detect asperities on the recording disk. The glide test head includes a detection pad on the trailing end of the head. Heating elements are fabricated proximate to the detection pad. The heating elements are independently controllable to control the amount of protrusion of different regions of the detection pad. The heating elements thus provide a way to substantially flatten the detection surface of the detection pad, and compensate for an uneven topography on a detection surface.
摘要翻译： 描述了滑翔测试系统和相关方法。 滑行测试系统包括滑动测试头，其在记录盘的表面上流动以检测记录盘上的凹凸。 滑行测试头包括头部尾端上的检测垫。 在检测板附近制造加热元件。 加热元件可独立控制，以控制检测垫的不同区域的突出量。 因此，加热元件提供了使检测焊盘的检测表面基本平坦化并且补偿检测表面上不均匀的形貌的方法。
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