利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.021 秒)

    Magnetic recording medium with dual magnetic layers and high in-plane coercivity
    3.
    发明授权
    Magnetic recording medium with dual magnetic layers and high in-plane coercivity 失效
    具有双磁性层和高平面矫顽力的磁记录介质

    公开(公告)号：US06461750B1

    公开(公告)日：2002-10-08

    申请号：US09406816

    申请日：1999-09-28

    申请人： Qixu (David) Chen ,  Lin Huang ,  Charles Leu ,  Rajiv Yadav Ranjan

    发明人： Qixu (David) Chen ,  Lin Huang ,  Charles Leu ,  Rajiv Yadav Ranjan

    IPC分类号： G11B566

    CPC分类号： G11B5/66 ,  Y10S428/90

    摘要： A magnetic recording media is formed with high in-plane coercivity employing dual magnetic layers. The first magnetic layer is sputter deposited in a chamber employing a shield such that the minimum incident angle of impinging atoms is relatively large, e.g., greater than about 26°. Embodiments of the present invention comprise depositing a NiAl seedlayer, a Cr or Cr alloy underlayer and a first CoCrTa magnetic layer at a thickness less than about 50Å for inducing the preferred (10.0) crystallographic orientation in the subsequently deposited second magnetic layer, e.g., CoCrPtTa or CoCrPtTaNb having a high Cr content of about 16 to about 21 at. %.

    摘要翻译： 使用双磁性层形成具有高的平面内矫顽力的磁记录介质。 将第一磁性层溅射沉积在采用屏蔽的腔室中，使得入射原子的最小入射角相对较大，例如大于约26°。 本发明的实施方案包括沉积厚度小于约50埃的NiAl种子层，Cr或Cr合金底层和第一CoCrTa磁性层，用于在随后沉积的第二磁性层中诱导优选的（10.0）晶体取向，例如CoCrPtTa 或具有约16至约21at的高Cr含量的CoCrPtTaNb。 ％。

    Magnetic recording media with a nialox sub-seedlayer
    5.
    发明授权
    Magnetic recording media with a nialox sub-seedlayer 失效
    具有nialox子种子层的磁记录介质

    公开(公告)号：US06346339B1

    公开(公告)日：2002-02-12

    申请号：US09379505

    申请日：1999-08-23

    申请人： Samuel Dacke Harkness, IV ,  Qixu (David) Chen ,  Zhong (Stella) Wu ,  Rajiv Yadav Ranjan

    发明人： Samuel Dacke Harkness, IV ,  Qixu (David) Chen ,  Zhong (Stella) Wu ,  Rajiv Yadav Ranjan

    IPC分类号： G11B566

    CPC分类号： G11B5/732 ,  C23C14/024 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/8404

    摘要： Magnetic recording media exhibiting enhanced SMNR are formed with an NiAlOx sub-seedlayer for microstructural control of the underlayer to enable deposition and growth of a magnetic layer exhibiting a (10{overscore (1)}0)-predominant crystallographic orientation and small, uniform grain size. Embodiments include completely reactive sputter depositing a NiAlOx sub-seedlayer on a glass-ceramic substrate and sequentially depositing thereon a NiAl seedlayer, a Cr or Cr-alloy underlayer, e.g., CrMo, a Co—Cr magnetic layer and a protective overcoat, e.g., carbon. The resulting magnetic recording media exhibit a high SMNR, high OW, narrow PW50, improved jitter and improved Hr.

    摘要翻译： 用NiAlOx亚子层形成表现出增强的SMNR的磁记录介质，用于底层的微结构控制，以使得能够沉积和生长表现出（10（超核（1）} 0） - 优势晶体取向的磁性层和小的均匀晶粒 尺寸。 实施例包括在玻璃 - 陶瓷衬底上完全反应性溅射沉积NiAlO x子种子层并且依次在其上沉积NiAl种子层，Cr或Cr-合金底层，例如CrMo，Co-Cr磁性层和保护性外涂层， 碳。 所得到的磁记录介质表现出高SMNR，高OW，窄PW50，改善的抖动和改善的Hr。

    Perpendicular magnetic recording media with improved scratch damage performance
    6.
    发明申请
    Perpendicular magnetic recording media with improved scratch damage performance 审中-公开
    垂直磁记录介质具有改善的划痕损伤性能

    公开(公告)号：US20080055777A1

    公开(公告)日：2008-03-06

    申请号：US11515752

    申请日：2006-09-06

    申请人： Shanghsien (Alex) Rou ,  Qixu (David) Chen ,  Raj N. Thangaraj ,  Huan Tang ,  Xinwei Li ,  Jing Gui

    发明人： Shanghsien (Alex) Rou ,  Qixu (David) Chen ,  Raj N. Thangaraj ,  Huan Tang ,  Xinwei Li ,  Jing Gui

    IPC分类号： G11B5/82

    CPC分类号： G11B5/66 ,  G11B5/72

    摘要： A scratch erasure resistant perpendicular magnetic recording medium comprises a non-magnetic substrate having a surface, and a layer stack formed over the surface and comprising: (i) at least one magnetically hard perpendicular magnetic recording layer; and (ii) at least one low shear modulus layer comprising at least one material having a shear modulus not greater than about 30 GPa. Preferably, the at least one magnetically hard perpendicular magnetic recording layer includes at least a first layer comprised of a magnetic material having a hexagonal close packed (hcp) crystal structure and preferred basal plane crystallographic orientation with c-axis perpendicular to a surface thereof.

    摘要翻译： 耐刮擦的垂直磁记录介质包括具有表面的非磁性衬底和形成在表面上的层叠，并且包括：（i）至少一个磁性硬的垂直磁记录层; 和（ii）包含至少一种剪切模量不大于约30GPa的材料的至少一种低剪切模量层。 优选地，至少一个磁性硬的垂直磁记录层至少包括由具有六方密堆积（hcp）晶体结构的磁性材料组成的第一层，以及具有垂直于表面的c轴的优选的基面平面晶体取向 其中。