Model for Demagnetization - Induced - Noise in Thin - Film Magnetic Recording Media


    A linear, statistical model is described which predicts the power spectrum of measured noise in bulk-demagnetized (i.e., ac-erased) thin-film magnetic recording media. It is shown that the noise is the result of magnetic flux which is ascribed to erasure-induced transitions dofig the track length in the medium. The noise power spectrum for a rigid disk… (More)


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