Ultra-smooth ceramic substrates and magnetic data storage media prepared therefrom
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United States of America Patent
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May 6, 1997
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N/A
app pub date -
Jun 2, 1994
filing date -
Jun 2, 1994
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Abstract
Layered substrates are disclosed having an ultra-smooth surface finish thereon rendering them useful in making high density magnetic storage media. The layered substrates are comprised of a non-oxide ceramic core coated with a smoothing layer comprised of an amorphous metal, particularly certain amorphous metal alloys based on chromium, molybdenum, tungsten, and mixtures thereof. Also disclosed are magnetic storage media comprising the layered substrates, as well as processes for making the substrates and magnetic media.
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