INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME

摘要

An information recording medium having such a recording material layer on a substrate where reversible phase transition between electrically or opticall y detectable states can be caused by electric energy or electromagnetic energy . The recording material forming the recording layer is either a material havi ng a crystal structure including lattice defects in one phase of the reversible phase transition or a material having a complex phase composed of a crystal portion including a lattice defect in one phase of the reversible phase transition and an amorphous portion. Both portions contain a common element. A part of the lattice defects are filled with an element other than the elemen t constituting the crystal structure. The recording medium having a recording thin film exhibits little variation of the recording and reproduction characteristics even after repetition of recording and reproduction excellen t weatherability, strong resistance against composition variation, and easily controllable characteristics.