| 摘要 |
PURPOSE:To enable to record and erase information with low power, by using a thin film of a material based on a Te-TeO3 material containing a relatively large amount of Te component with at least Bi, Ge and Au incorporated therein, in which the compositional ratios of the additives are specified. CONSTITUTION:The thin film is provided in which the relative values of the total number of atoms of Te-Bi-Ge and the numbers of atoms of Au and O lie in the shaded region A-E on the figure and the relative numbers of atoms of Te, Bi and Ge lie in the shaded region F-J on the figure. Accordingly, by using the thin film of the five-element oxide system TE-O-Ge-Bi-Au, an optical information-recording member can be obtained which comprises Te as a main constituent for reversible change and has a combination of excellent characteristics owing to the respective effects of the constituents, namely, enhancement of thermal stability by Ge, enhancement of recording sensitivity by Bi, enhancement of erasing speed by Au, and enhancement of moisture resistance by O. |
