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    SYSTEM, METHOD AND APPARATUS FOR ONSET MAGNETIC OXIDE LAYER FOR HIGH PERFORMANCE PERPENDICULAR MAGNETIC RECORDING MEDIA
    2.
    发明申请
    SYSTEM, METHOD AND APPARATUS FOR ONSET MAGNETIC OXIDE LAYER FOR HIGH PERFORMANCE PERPENDICULAR MAGNETIC RECORDING MEDIA 有权
    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

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

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

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

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

    Abstract: 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.

    Abstract translation: 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。

    Perpendicular magnetic recording medium with exchange-coupled magnetic layers and improved coupling layer
    3.
    发明授权
    Perpendicular magnetic recording medium with exchange-coupled magnetic layers and improved coupling layer 失效
    具有交换耦合磁性层和改进耦合层的垂直磁记录介质

    公开(公告)号：US07638210B2

    公开(公告)日：2009-12-29

    申请号：US11735710

    申请日：2007-04-16

    Applicant: Andreas Klaus Berger ,  Xiaoping Bian ,  Mary Frances Minardi ,  Kentaro Takano ,  Kai Tang

    Inventor： Andreas Klaus Berger ,  Xiaoping Bian ,  Mary Frances Minardi ,  Kentaro Takano ,  Kai Tang

    IPC: G11B5/66

    CPC classification number: G11B5/66 ,  G11B5/65 ,  Y10T428/24942

    Abstract: A perpendicular magnetic recording medium has an “exchange-spring” type magnetic recording layer (RL) with an improved coupling layer (CL). The RL includes the first or lower ferromagnetic layer MAG1, sometimes called the “media” layer, the second or upper ferromagnetic layer MAG2, sometimes called the “exchange-spring” layer, and the intermediate CL that provides ferromagnetic exchange coupling between MAG1 and MAG2. The CL is formed of NiCr or RuCr based alloys, or CoCr or CoCrB alloys with high Cr and/or B content (Cr plus B>about 25 atomic percent), or RuCoCr alloys with low Co content (

    Abstract translation: 垂直磁记录介质具有具有改进的耦合层（CL）的“交换弹簧”型磁记录层（RL）。 RL包括第一或下铁磁层MAG1，有时称为“介质”层，第二或上铁磁层MAG2，有时称为“交换弹簧”层，以及在MAG1和MAG2之间提供铁磁交换耦合的中间CL 。 CL由NiCr或RuCr基合金或具有高Cr和/或B含量（Cr + B> 25原子％）的CoCr或CoCrB合金或低Co含量（<约65原子％）的RuCoCr合金形成。 对于每个CL组合物，存在提供MAG1和MAG2之间的最佳层间交换耦合的CL厚度范围。 选择的CL材料提供具有良好磁性能的交换型垂直磁记录介质，而较高量的CL提高了介质的耐腐蚀性。

    Thin film magnetic recording disk with a chromium-nickel pre-seed layer
    4.
    发明授权
    Thin film magnetic recording disk with a chromium-nickel pre-seed layer 失效
    具有铬镍预种子层的薄膜磁记录盘

    公开(公告)号：US06572989B2

    公开(公告)日：2003-06-03

    申请号：US09876571

    申请日：2001-06-06

    Applicant: Xiaoping Bian ,  Mary Frances Doerner ,  Tim Minvielle ,  Mohammad Taghi Mirzamaani ,  Kai Tang

    Inventor： Xiaoping Bian ,  Mary Frances Doerner ,  Tim Minvielle ,  Mohammad Taghi Mirzamaani ,  Kai Tang

    IPC: G11B566

    CPC classification number: G11B5/732 ,  G11B5/66 ,  G11B5/7325 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12847 ,  Y10T428/12854 ,  Y10T428/12944 ,  Y10T428/24975 ,  Y10T428/265

    Abstract: In a thin film magnetic disk, a crystalline CrNi pre-seed layer is sputtered onto a substrate such as glass, followed by a RuAl seed layer. The CrNi pre-seed layer reduces grain size and its distribution, and improves in-plane crystallographic orientation, coercivity (Hc) and SNR. In a preferred embodiment the RuAl seed layer is followed by a Cr alloy underlayer. In a preferred embodiment the Cr alloy underlayer is followed by an onset layer and a magnetic layer, or by two or more magnetic layers antiferromagnetically coupled through one or more spacer layers. The crystalline CrNi pre-seed layer allows use of a thinner RuAl seed layer which results in smaller overall grain size, as well as a reduction in manufacturing cost due to relatively high cost of ruthenium. The CrNi pre-seed layer also allows use of a thinner Cr alloy underlayer which also contributes to reduce overall grain size.

    Abstract translation: 在薄膜磁盘中，将结晶CrNi预种子层溅射到诸如玻璃的衬底上，随后是RuAl种子层。 CrNi预种子层减小晶粒尺寸及其分布，并提高晶面取向，矫顽力（Hc）和信噪比。 在优选的实施方案中，RuAl种子层之后是Cr合金底层。 在优选的实施方案中，Cr合金底层之后是起始层和磁性层，或者由两个或更多个通过一个或多个间隔层反铁磁耦合的磁性层。 结晶CrNi预种子层允许使用更薄的RuAl种子层，其导致更小的总体晶粒尺寸，以及由于钌的相对高的成本而导致的制造成本的降低。 CrNi预种子层还允许使用更薄的Cr合金底层，这也有助于减小总体晶粒尺寸。

    Seed layer and underlayer with high and low oxygen concentration portions for hand disk magnetic recording medium on a glass substrate
    5.
    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

    Applicant: Xiaoping Bian ,  Mary Frances Doerner ,  Shanlin Duan ,  Jinshan Li ,  Mohammad Taghi Mirzamaani

    Inventor： Xiaoping Bian ,  Mary Frances Doerner ,  Shanlin Duan ,  Jinshan Li ,  Mohammad Taghi Mirzamaani

    IPC: G11B566

    CPC classification number: G11B5/732 ,  C23C14/185 ,  G11B5/7325 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/265

    Abstract: 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.

    Abstract translation: 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。

    PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING A DUAL ONSET LAYER
    7.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING MEDIA HAVING A DUAL ONSET LAYER 有权
    具有双重ONSET层的PERPENDICULAR磁记录介质

    公开(公告)号：US20110111261A1

    公开(公告)日：2011-05-12

    申请号：US12614598

    申请日：2009-11-09

    Applicant: Xiaoping Bian ,  Jack Jyh-Kau Chang ,  Zhupei Shi

    Inventor： Xiaoping Bian ,  Jack Jyh-Kau Chang ,  Zhupei Shi

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

    CPC classification number: G11B5/66 ,  G11B5/65 ,  G11B5/7325 ,  G11B5/738 ,  Y10T428/115

    Abstract: 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.

    Abstract translation: 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。

    PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH EXCHANGE-COUPLED MAGNETIC LAYERS AND IMPROVED COUPLING LAYER
    8.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH EXCHANGE-COUPLED MAGNETIC LAYERS AND IMPROVED COUPLING LAYER 失效
    具有交替耦合磁性层和改进耦合层的全磁性记录介质

    公开(公告)号：US20080254324A1

    公开(公告)日：2008-10-16

    申请号：US11735710

    申请日：2007-04-16

    Applicant: Andreas Klaus Berger ,  Xiaoping Bian ,  Mary Frances Minardi ,  Kentaro Takano ,  Kai Tang

    Inventor： Andreas Klaus Berger ,  Xiaoping Bian ,  Mary Frances Minardi ,  Kentaro Takano ,  Kai Tang

    IPC: G11B5/66

    CPC classification number: G11B5/66 ,  G11B5/65 ,  Y10T428/24942

    Abstract: A perpendicular magnetic recording medium has an “exchange-spring” type magnetic recording layer (RL) with an improved coupling layer (CL). The RL includes the first or lower ferromagnetic layer MAG1, sometimes called the “media” layer, the second or upper ferromagnetic layer MAG2, sometimes called the “exchange-spring” layer, and the intermediate CL that provides ferromagnetic exchange coupling between MAG1 and MAG2. The CL is formed of NiCr or RuCr based alloys, or CoCr or CoCrB alloys with high Cr and/or B content (Cr plus B>about 25 atomic percent), or RuCoCr alloys with low Co content (

    Abstract translation: 垂直磁记录介质具有具有改进的耦合层（CL）的“交换弹簧”型磁记录层（RL）。 RL包括第一或下铁磁层MAG1，有时称为“介质”层，第二或上铁磁层MAG 2，有时称为“交换弹簧”层，以及在MAG之间提供铁磁交换耦合的中间CL 1和MAG 2。 CL由NiCr或RuCr基合金或具有高Cr和/或B含量（Cr + B> 25原子％）的CoCr或CoCrB合金或低Co含量（<约65原子％）的RuCoCr合金形成。 对于每个CL组合物，存在提供MAG1和MAG2之间的最佳层间交换耦合的CL厚度范围。 选择的CL材料提供具有良好磁性能的交换型垂直磁记录介质，而较高量的CL提高了介质的耐腐蚀性。

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