Perpendicular magnetic recording medium with exchange-coupled magnetic layers and improved coupling layer
    1.
    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

    IPC分类号: G11B5/66

    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。

    PERPENDICULAR MAGNETIC RECORDING MEDIUM WITH EXCHANGE-COUPLED MAGNETIC LAYERS AND IMPROVED COUPLING LAYER
    2.
    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

    IPC分类号: G11B5/66

    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。

    Perpendicular magnetic recording media with oxide-containing exchange coupling layer
    10.
    发明授权
    Perpendicular magnetic recording media with oxide-containing exchange coupling layer 有权
    具有氧化物交换耦合层的垂直磁记录介质

    公开(公告)号:US08168310B2

    公开(公告)日:2012-05-01

    申请号:US12638905

    申请日:2009-12-15

    IPC分类号: G11B5/66

    CPC分类号: G11B5/66 G11B5/65

    摘要: A magnetic storage medium according to one embodiment includes a substrate; a first oxide magnetic layer formed above the substrate; a second oxide magnetic layer formed above the first oxide magnetic layer; an exchange coupling layer formed above the second oxide magnetic layer, the exchange coupling layer comprising an oxide; and a magnetic cap layer formed above the exchange coupling layer. A method according to one embodiment includes forming a high Ku first oxide magnetic layer above a substrate by sputtering; forming a low Ku second oxide magnetic layer above the first oxide magnetic layer by sputtering; forming an exchange coupling layer of CoCrPt-oxide above the second oxide magnetic layer; and forming a magnetic cap layer above the exchange coupling layer. Additional systems and methods are also presented.

    摘要翻译: 根据一个实施例的磁存储介质包括基板; 形成在所述基板上的第一氧化物磁性层; 形成在所述第一氧化物磁性层上方的第二氧化物磁性层; 在所述第二氧化物磁性层上形成的交换耦合层,所述交换耦合层包含氧化物; 以及形成在所述交换耦合层上方的磁性盖层。 根据一个实施例的方法包括通过溅射在衬底上方形成高Ku第一氧化物磁性层; 通过溅射在第一氧化物磁性层上方形成低Ku第二氧化物磁性层; 在所述第二氧化物磁性层上方形成CoCrPt氧化物的交换耦合层; 以及在所述交换耦合层上方形成磁性覆盖层。 还介绍了其他系统和方法。