Phases of the Initialized AgInSbTe Phase Change Optical Recording Films

Abstract

The Ag–In–Sb–Te active layer transformed into different phases after applying different initialization powers ranging from 150 mW to 900 mW. With an initialization power of 250 mW, the rhombohedral Sb crystalline phase was formed. For higher initialization powers, i.e., 350 mW or 450 mW, the AgSbTe2 crystalline phase and the newly proposed fcc Sb crystalline phase started to form. For initialization powers higher than or equal to 550 mW, no rhombohedral Sb phase was observed.