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    • 8. 发明申请
    • System and method for patterning a master disk for nanoimprinting patterned magnetic recording disks
    • 用于图案化用于纳米压印图案化磁记录盘的母盘的系统和方法
    • US20070069429A1
    • 2007-03-29
    • US11241284
    • 2005-09-29
    • Thomas AlbrechtDennis McKeanGurinder SinghHenry Yang
    • Thomas AlbrechtDennis McKeanGurinder SinghHenry Yang
    • B29C35/08B29C67/00G02B1/12
    • G11B5/855
    • A system and method for patterning a master disk or “stamper” to be used for nanoimprinting magnetic recording disks uses an air-bearing slider that supports an aperture structure within the optical near-field of a resist layer on a rotating master disk substrate. Laser pulses directed to the input side of the aperture are output to the resist layer. The aperture structure includes a metal film reflective to the laser radiation with the aperture formed in it. The aperture has a size less than the wavelength of the incident laser radiation and is maintained by the air-bearing slider near the resist layer to within the radiation wavelength. The timing of the laser pulses is controlled to form a pattern of exposed regions in the resist layer, with this pattern ultimately resulting in the desired pattern of data islands and nondata islands in the magnetic recording disks when they are nanoimprinted by the master disk.
    • 用于图形化用于纳米压印磁记录盘的母盘或“压模”的系统和方法使用支撑旋转母盘衬底上的抗蚀剂层的光学近场内的孔结构的空气轴承滑块。 指向孔径输入侧的激光脉冲输出到抗蚀剂层。 孔结构包括反射激光辐射的金属膜,其中形成有孔。 孔径的尺寸小于入射激光辐射的波长,并且由抗蚀剂层附近的空气轴承滑块维持在辐射波长内。 控制激光脉冲的定时以形成抗蚀剂层中的暴露区域的图案,当这些图案被母盘纳米压印时,该图案最终导致磁记录盘中的数据岛和非数据岛的期望图案。
    • 9. 发明申请
    • Magnetic recording disk with patterned nondata islands of alternating polarity
    • 具有交替极性的图案化非磁性岛的磁记录盘
    • US20060280975A1
    • 2006-12-14
    • US11148918
    • 2005-06-09
    • Thomas AlbrechtZvonimir Bandic
    • Thomas AlbrechtZvonimir Bandic
    • G11B5/09B32B3/02G11B5/706
    • B82Y10/00G11B5/1278G11B5/59655G11B5/743G11B5/855
    • A magnetic recording disk has patterned nondata regions that are used for read/write head positioning and data synchronization. The nondata regions contain nondata islands of magnetizable material separated by nonmagnetic spaces with the nondata islands having alternating magnetization polarity in the along-the-track direction. In each nondata region, every other nondata island in the along-the track direction has the same magnetization direction, with adjacent nondata islands having antiparallel magnetization directions. The disk may be either a horizontal magnetic recording disk, wherein the antiparallel magnetization directions are in the plane of the recording layer and parallel to the along-the-track direction, or a perpendicular magnetic recording disk, wherein the antiparallel the magnetization directions are “into” and “out of” the recording layer.
    • 磁记录盘具有用于读/写头定位和数据同步的非图形区域。 非磁性区域包含由非磁性空间分离的可磁化材料的非磁性岛,其中沿着磁道方向具有交变磁化极性的非磁性岛。 在每个非数据区域中,沿轨道方向的每隔一个非数据岛具有相同的磁化方向,相邻的非数据岛具有反平行的磁化方向。 盘可以是水平磁记录盘,其中反平行磁化方向在记录层的平面中并且平行于轨道方向,或垂直磁记录盘,其中反并联的磁化方向为“ 进入“和”离开“记录层。