PROPERTY CHANGE OF AGO(X) RECORDABLE COMPACT-DISK WITH VARIOUS DIELECTRIC FILMS

A recordable compact disk media with an inorganic material, AgO(x), is reported. A scanning tunneling microscope image of a polycarbonate su bstrate of this media after recording was measured and the pit shapes of the image were evaluated. It was found that there existed a linear correlation between the pit shapes and the cross-talk value with a coe fficient Of 0.959, and the mechanism of the pit formation was proposed by the scanning tunneling microscope image. The optical and electrica l property changes were investigated by use of different dielectric th in films, SiO2, SiN, LaSiON, and SiNO. A cross-talk value of a disk us ing a SiNO film was improved to mostly satisfy the compact disk standa rd. The property changes can be explained by the proposed pit formatio n model.