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    Perpendicular magnetic recording medium with exchange-coupled magnetic layers and improved coupling layer
    12.
    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

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

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

    IPC分类号： G11B5/66

    CPC分类号： G11B5/66 ,  G11B5/65 ,  Y10T428/24942

    摘要： 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 (

    摘要翻译： 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
    13.
    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

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

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

    IPC分类号： G11B566

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

    摘要： 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.

    摘要翻译： 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。

    Magnetic recording disk with antiferromagnetically coupled master layer including copper
    14.
    发明授权
    Magnetic recording disk with antiferromagnetically coupled master layer including copper 失效
    具有反铁磁耦合主磁层（包括铜）的磁记录盘

    公开(公告)号：US07419730B2

    公开(公告)日：2008-09-02

    申请号：US10931642

    申请日：2004-08-31

    申请人： Xiaoping Bian ,  Mary Frances Doerner ,  Tetsuya Kanbe ,  Mark Mercado ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

    发明人： Xiaoping Bian ,  Mary Frances Doerner ,  Tetsuya Kanbe ,  Mark Mercado ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

    IPC分类号： G11B5/66

    CPC分类号： G11B5/732 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7325

    摘要： An antiferromagnetically coupled (AFC) magnetic recording medium with an AFC master layer comprising at least two magnetic layers with the top magnetic layer including copper is described. The slave layer is separated from the master layer structure by a nonmagnetic spacer layer selected to antiferromagnetically couple the layers. The master layer structure according to the invention includes a bottom and top layer of distinct ferromagnetic materials. Preferably, the top layer of the master layer is a cobalt alloy including from 1 to 5 at. % copper with an example being CoPt13Cr20B8Cu2. The AFC magnetic layer structure can be used with a variety of substrates including circumferentially textured glass and NiP/AlMg.

    摘要翻译： 描述了具有包括至少两个具有顶部磁性层包括铜的磁性层的AFC主层的反铁磁耦合（AFC）磁记录介质。 通过选择用于反铁磁耦合层的非磁性间隔层将从属层与主层结构分离。 根据本发明的主层结构包括不同铁磁材料的底层和顶层。 优选地，主层的顶层是包括1至5个的钴合金。 ％铜，例如CoPt 13 C 20 20 B 2 Cu 2。 AFC磁性层结构可以与各种基材一起使用，包括圆周纹理玻璃和NiP / AlMg。

    RuTi AS A SEED LAYER IN PERPENDICULAR RECORDING MEDIA
    18.
    发明申请
    RuTi AS A SEED LAYER IN PERPENDICULAR RECORDING MEDIA 审中-公开
    RuTi作为PERPUDICULAR RECORDING MEDIA中的一个种子层

    公开(公告)号：US20090190267A1

    公开(公告)日：2009-07-30

    申请号：US12020235

    申请日：2008-01-25

    申请人： Xiaoping Bian ,  Mary Minardi ,  Kai Tang

    发明人： Xiaoping Bian ,  Mary Minardi ,  Kai Tang

    IPC分类号： G11B5/33

    CPC分类号： G11B5/82 ,  G11B5/667 ,  G11B5/7379

    摘要： A method for reducing thin film media layer thickness while maintaining adequate magnetic recording performance includes providing a substrate comprising a rigid support structure, depositing a soft underlayer on top of the substrate, depositing an interlayer on top of the soft underlayer and depositing a exchange break layer on top of the interlayer, wherein the exchange break layer comprises a flash layer of RuTi and a seed layer of Ru. The flash layer is deposited in place of a pure Ru layer, thereby reducing the amount of Ru deposited as well as decreasing the thickness of the overall intermediate layer. The magnetic performance of the media is maintained with the substitution of a RuTi flash layer for a pure Ru layer.

    摘要翻译： 一种在保持足够的磁记录性能的同时降低薄膜介质层厚度的方法包括提供包括刚性支撑结构的基底，在基底的顶部上沉积软底层，在软底层顶部沉积中间层并沉积交换断裂层 在中间层的顶部，其中交换破坏层包括RuTi的闪蒸层和Ru的种子层。 沉积闪蒸层代替纯Ru层，从而减少沉积的Ru的量以及减小整个中间层的厚度。 通过用RuTi闪蒸层代替纯Ru层来保持介质的磁性能。

    Magnetic recording disk with antiferromagnetically coupled master layer including copper
    19.
    发明申请
    Magnetic recording disk with antiferromagnetically coupled master layer including copper 失效
    具有反铁磁耦合主磁层（包括铜）的磁记录盘

    公开(公告)号：US20060046102A1

    公开(公告)日：2006-03-02

    申请号：US10931642

    申请日：2004-08-31

    申请人： Xiaoping Bian ,  Mary Doerner ,  Tetsuya Kanbe ,  Mark Mercado ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

    发明人： Xiaoping Bian ,  Mary Doerner ,  Tetsuya Kanbe ,  Mark Mercado ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

    IPC分类号： G11B5/66

    CPC分类号： G11B5/732 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7325

    摘要： An antiferromagnetically coupled (AFC) magnetic recording medium with an AFC master layer comprising at least two magnetic layers with the top magnetic layer including copper is described. The slave layer is separated from the master layer structure by a nonmagnetic spacer layer selected to antiferromagnetically couple the layers. The master layer structure according to the invention includes a bottom and top layer of distinct ferromagnetic materials. Preferably, the top layer of the master layer is a cobalt alloy including from 1 to 5 at. % copper with an example being CoPt13Cr20B8Cu2. The AFC magnetic layer structure can be used with a variety of substrates including circumferentially textured glass and NiP/AlMg.

    摘要翻译： 描述了具有包括至少两个具有顶部磁性层包括铜的磁性层的AFC主层的反铁磁耦合（AFC）磁记录介质。 通过选择用于反铁磁耦合层的非磁性间隔层将从属层与主层结构分离。 根据本发明的主层结构包括不同铁磁材料的底层和顶层。 优选地，主层的顶层是包括1至5个的钴合金。 ％铜，例如CoPt 13 C 20 20 B 2 Cu 2。 AFC磁性层结构可以与各种基材一起使用，包括圆周纹理玻璃和NiP / AlMg。

    Magnetic thin film media with a pre-seed layer of CrTi
    20.
    发明申请
    Magnetic thin film media with a pre-seed layer of CrTi 审中-公开
    具有CrTi预种子层的磁性薄膜介质

    公开(公告)号：US20050031909A1

    公开(公告)日：2005-02-10

    申请号：US10903064

    申请日：2004-07-29

    申请人： Xiaoping Bian ,  Mary Doerner ,  James Hagan ,  Tim Minvielle ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

    发明人： Xiaoping Bian ,  Mary Doerner ,  James Hagan ,  Tim Minvielle ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Kai Tang

    IPC分类号： G11B5/73 ,  H01F10/30 ,  H01F10/32 ,  G11B5/64 ,  B32B3/24 ,  B32B15/01

    CPC分类号： B82Y25/00 ,  G11B5/7379 ,  H01F10/30 ,  H01F10/32 ,  Y10S428/90 ,  Y10T428/12472 ,  Y10T428/12681 ,  Y10T428/265

    摘要： The applicants disclose a thin film magnetic media structure with a pre-seed layer of CrTi. The CrTi pre-seed layer presents an amorphous or nanocrystalline structure. The preferred seed layer is RuAl for use with the CrTi pre-seed layer. The use of the CrTi/RuAl bilayer structure provides superior adhesion to the substrate and resistance to scratching, as well as, excellent coercivity and signal-to-noise ratio (SNR) and reduced cost over the prior art. One embodiment of the invention sputter-deposits a CrTi pre-seed layer and a RuAl seed layer followed by an underlayer and at least one magnetic layer on a circumferentially polished substrate structure to achieve an Mrt orientation ratio greater than one. Two methods according to the invention allow the Mrt orientation ratio of the disk to be adjusted or maximized by varying the thickness of the RuAl seed layer and/or altering the atomic percentage of titanium in the pre-seed layer.

    摘要翻译： 申请人公开了具有CrTi预种子层的薄膜磁性介质结构。 CrTi预种子层呈现无定形或纳米晶体结构。 优选的种子层是用于CrTi预种子层的RuAl。 CrTi / RuAl双层结构的使用提供了优异的与基板的粘附性和耐划伤性，以及优于现有技术的矫顽力和信噪比（SNR）以及降低的成本。 本发明的一个实施方案溅射沉积CrTi预种子层和RuAl种子层，接着是底层和在周向抛光的衬底结构上的至少一个磁性层，以实现大于1的Mrt取向比。 根据本发明的两种方法允许通过改变RuAl种子层的厚度和/或改变预种子层中钛的原子百分比来调节或最大化盘的Mrt取向比。