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Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass
Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass
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机译:用于信息记录介质的微晶玻璃,微晶玻璃基板以及使用该微晶玻璃的信息记录介质
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摘要
Enclosed are crystallized glasses suitable for a substrate for an information recording medium such as a magnetic disc, optical disc, or optomagnetic disc, a substrate for information recording medium using such a crystallized glass substrate, and an information recording medium using such a substrate for information recording medium. The crystallized glasses are capable of providing a glass substrate having a high Young's modulus, as well as excellent mechanical strength, surface flatness, and heat resistance and having an excellent surface smoothness upon polishing. Glass substrate having an excellent surface smoothness using such a crystallized glass are also disclosed.
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