Journal of the Magnetics Society of Japan
Online ISSN : 1880-4004
Print ISSN : 0285-0192
ISSN-L : 0285-0192
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Volume 16, Issue 5
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Papers
  • New Recording Modulation Method by Using the Complex of Magnetic Materials
    S. Tanabe, S. Naito, K. Ohnishi
    1992 Volume 16 Issue 5 Pages 707-711
    Published: October 01, 1992
    Released on J-STAGE: January 11, 2013
    DOIhttps://doi.org/10.3379/jmsjmag.16.707
    JOURNAL OPEN ACCESS
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      The method of F-2F recording which is usually applied to magnetic cards etc. is easily rewritable. Recently, several kinds of counterplan for security are performed, but these are not intrinsic. Accordingly, the security of F-2F recording is not high. Now, the complex of two magnetic materials is used for magnetic recording layer. Those materials have different coercivities. Two levels of recording current make three states of residual magnetic flux. This method is named 2F recording. The features and merits of 2F recording method will be explained.
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