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    Magnetic recording disk with antiferromagnetically coupled master layer including copper
    1.
    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。

    MAGNETIC THIN FILM MEDIA WITH A BI-LAYER STRUCTURE OF CRTI/NIP
    2.
    发明申请
    MAGNETIC THIN FILM MEDIA WITH A BI-LAYER STRUCTURE OF CRTI/NIP 有权
    具有CRTI / NIP的双层结构的磁薄膜介质

    公开(公告)号：US20050048328A1

    公开(公告)日：2005-03-03

    申请号：US10651634

    申请日：2003-08-29

    申请人： Xiaoping Bian ,  Mary Doerner ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Qi-Fan Xiao

    发明人： Xiaoping Bian ,  Mary Doerner ,  Mohammad Mirzamaani ,  Adam Polcyn ,  Qi-Fan Xiao

    IPC分类号： G11B5/738 ,  G11B5/65 ,  G11B5/73 ,  G11B5/85 ,  G11B5/851 ,  B32B3/02 ,  G11B5/64

    CPC分类号： G11B5/7325 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12854 ,  Y10T428/12861 ,  Y10T428/12986

    摘要： A thin film magnetic media structure with a bi-layer structure of amorphous chromium titanium (CrTi) followed by an amorphous layer of nickel phosphorus (NiP) is disclosed. After the NiP has been deposited it is exposed to oxygen to form an oxidized surface. Preferably the underlayer is deposited directly onto the oxidized NiP surface. The bi-layer structure of CrTi/NiP promotes excellent in-plane crystallographic orientation in the cobalt alloy magnetic layer(s) and allows: an ultra-thin chromium underlayer to be used which provides better control over grain size and distribution. When the CrTi/NiP bi-layer structure is combined with a circumferentially textured substrate, preferably glass, a high Mrt orientation ratio (OR) results.

    摘要翻译： 公开了一种具有非晶态铬钛（CrTi）双层结构，随后是镍磷（NiP）非晶层的薄膜磁介质结构。 NiP沉积后，暴露于氧气以形成氧化表面。 优选地，底层直接沉积在氧化的NiP表面上。 CrTi / NiP的双层结构促进钴合金磁性层中的优异的面内晶体取向，并且允许：使用超薄铬底层，其提供对晶粒尺寸和分布的更好控制。 当CrTi / NiP双层结构与周向织构化的基底（优选玻璃）组合时，得到高的Mrt取向比（OR）。

    Longitudinal magnetic recording using magnetic media with a soft underlayer
    5.
    发明申请
    Longitudinal magnetic recording using magnetic media with a soft underlayer 失效
    使用具有软底层的磁性介质的纵向磁记录

    公开(公告)号：US20050190478A1

    公开(公告)日：2005-09-01

    申请号：US10791431

    申请日：2004-03-01

    申请人： Wenchien Hsiao ,  Vladimir Nikitin ,  Adam Polcyn

    发明人： Wenchien Hsiao ,  Vladimir Nikitin ,  Adam Polcyn

    IPC分类号： G11B5/00 ,  G11B5/02 ,  G11B5/64 ,  G11B5/73 ,  G11B5/82

    CPC分类号： G11B5/667 ,  G11B5/02 ,  G11B5/64 ,  G11B5/82 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/001

    摘要： A method of longitudinal recording using a medium with a magnetically soft underlayer is described. The method includes lowering the longitudinal coercivity in a magnetic domain in the magnetic recording medium by generating a vertical component of magnetic flux in the magnetic recording medium and writing a longitudinal orientation in the magnetic domain in the magnetic recording medium by generating a larger horizontal component of magnetic flux in the magnetic recording medium using the write head. Optionally the method further includes magnetically saturating the magnetically soft underlayer after lowering the longitudinal coercivity to limit the vertical component of the magnetic flux. The recording medium has a magnetic recording layer, a spacer layer and a soft underlayer. In one embodiment the soft underlayer is an antiferromagnetically coupled magnetic layer stack with two soft magnetic layers separated by a non-magnetic spacer layer selected to achieve the antiferromagnetic coupling.

    摘要翻译： 描述使用具有磁软底层的介质进行纵向记录的方法。 该方法包括通过在磁记录介质中产生磁通量的垂直分量来降低磁记录介质中的磁畴中的纵向矫顽力，并通过产生较大的水平分量来形成磁记录介质中的磁畴中的纵向取向 使用写入磁头的磁记录介质中的磁通量。 可选地，该方法还包括在降低纵向矫顽力之后使磁软底层磁饱和，以限制磁通的垂直分量。 记录介质具有磁记录层，间隔层和软底层。 在一个实施例中，软底层是反铁磁耦合磁层，其中两个软磁层由被选择用于实现反铁磁耦合的非磁性间隔层隔开。

    Magnetic recording disk with antiferromagnetically coupled master layer including copper
    6.
    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
    7.
    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。