OPTICAL INFORMATION RECORDING MEDIUM

摘要

PURPOSE:To improve repetition characteristics by providing boundary control layers of an oxide restricted in a standard forming free energy value in contact with a thin recording film. CONSTITUTION:The boundary control layers 3, 5 are provided in contact with the thin recording film 4. The layers 3, 5 are physically and chemically stable and have the higher m. p. than the m. p. of the recording material and the higher softening temp. than the softening temp. thereof. The essential component consists of the oxide having the standard forming free energy value at 1000 deg.C ranging from 4000kJ/mol O2 to -800kJ/mol O2. The destruction of the film 4 by repetition is substantially prevented in this way and the good repetition characteristics are obtd.