| http://www.w3.org/ns/prov#value | - and improve the long-term storage reliability of the optical recording medium 10 may be used. [0074] Concretely, it is preferable to form the L0 recording film 23 and the L1 recording film 33 of a SbTe system material represented by the compositional formula: (SbxTe1???x)1???yMy, where M is an element other than Sb and Te, x is equal to or larger than 0.55 and equal to or smaller than 0.9 and y i
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