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Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof
Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof
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机译:用于磁记录介质基板的玻璃,磁记录介质基板,磁记录介质及其制备方法
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摘要
A glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, a magnetic recording medium substrate comprised of this glass, a magnetic recording medium equipped with this substrate, and methods of manufacturing the same. The glass compositions disclosed comprise oxides of at least Si, Al, Li, Na, K, Sn and Ce, optionally Sb, but not comprising As or F. Additional oxides of Mg, Cs, Sr and Ba may be present. The oxides are presented as molar percentages, mass percentages and ratios thereof.
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