| http://www.w3.org/ns/prov#value | - According to the present invention, the foregoing and other advantages are achieved in part by a magnetic recording medium comprising: a substrate comprising a glass or glass-ceramic material containing about 0.5 to about 32 wt. % lithium oxide (Li2 O); at least one amorphous NiP sealing layer; and a magnetic layer, wherein the sealing layer substantially prevents migration of Li from the substrat
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