Recording performance is analyzed by a micromagnetic model in two thin film media with different distribution width of the anisotropy field magnitude. With the same M/sub r//spl delta/, the magnetic properties of the two media are almost the same except that the switching slope S* is larger for the medium with narrower distribution. The signal-to-noise ratio (SNR) is calculated for both media versus recording densities. The SNR at recording densities 4800-9000 flux reversals per millimeter is 5-8 dB smaller in the medium with a broad anisotropy magnitude distribution than the SNR in the medium with a sharp distribution.
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机译:通过微磁模型在两种不同各向异性磁场幅度分布宽度的薄膜介质中分析记录性能。在M / sub r // spl delta /相同的情况下,两种介质的磁性能几乎相同,只是对于分布较窄的介质,开关斜率S *较大。计算两种介质相对于记录密度的信噪比(SNR)。在具有宽各向异性大小分布的介质中,记录密度为每毫米4800-9000通量反转的SNR比在具有尖锐分布的介质中的SNR小5-8 dB。
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