发明名称 MAGTENIC RECORDING MEDIA
摘要 A magnetic recording medium suitable for use in a recording system employing a magnetic recording transducer or head of the single-pole type which operates in a perpendicular magnetization mode comprises a non-magnetic base supporting a layer of low coercive force material formed on the base and which underlies a magnetic recording layer. The magnetic recording layer which faces the magnetic recording transducer or head is formed of an alloy composed mainly of chromium and cobalt and has an easy axis of magnetization perpendicular to the surface of the magnetic recording layer, with the thickness of the latter being no greater than 3.0 microns. The low coercive force material layer has a coercive force no greater than 1/5 of the coercive force of the magnetic recording layer, and the thickness of the low coercive force layer is greater than 0.1 microns.
申请公布号 GB2006508(A) 申请公布日期 1979.05.02
申请号 GB19780038711 申请日期 1978.09.29
申请人 IWASAKI S;SONY CORP FUJITSU LTD 发明人
分类号 G11B5/127;G11B5/64;G11B5/66;G11B5/667;G11B5/85;G11B5/851;H01F10/16;(IPC1-7):11B5/66 主分类号 G11B5/127
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