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    • 8. 发明授权
    • Magnetic recording medium and manufacturing method thereof
    • 磁记录介质及其制造方法
    • US08507116B2
    • 2013-08-13
    • US13175485
    • 2011-07-01
    • Takeshi IwasakiKaori KimuraYoshiyuki KamataMasatoshi Sakurai
    • Takeshi IwasakiKaori KimuraYoshiyuki KamataMasatoshi Sakurai
    • G11B5/127
    • G11B5/8404G11B5/746G11B5/82G11B5/855Y10T428/11
    • According to one embodiment, a magnetic recording medium includes a substrate, a soft magnetic layer, an underlayer, a magnetic recording layer, and a protective layer, wherein the magnetic recording layer is provided with a pattern including recording portions and non-recording portions, the non-recording portions have a composition that is equal to a composition obtained by demagnetizing the recording portions, the non-recording portions contain at least one metal element selected from the group consisting of vanadium and zirconium and at least one element selected from the group consisting of nitrogen, carbon, boron and oxygen, and the at least one element selected from the group consisting of nitrogen, carbon, boron and oxygen is contained in the non-recording portions at a higher content than the content of the at least one element selected from the group consisting of nitrogen, carbon, boron and oxygen in the recording portions.
    • 根据一个实施例,磁记录介质包括衬底,软磁层,底层,磁记录层和保护层,其中磁记录层设置有包括记录部分和非记录部分的图案, 非记录部分的组成等于通过使记录部分退磁获得的组合物,非记录部分含有至少一种选自钒和锆的金属元素和至少一种选自组中的元素 由氮,碳,硼和氧组成,并且所述至少一种选自氮,碳,硼和氧的元素以比所述至少一种元素的含量更高的含量包含在非记录部分中 在记录部分中选自氮,碳,硼和氧。