1 Introduction The use of chalcogenide alloys for optical data storage was first reported by S R. Ovshinsky in 1970. Research works dealt mostly with Te-based alloys because the Te-based media have high optical absorp...1 Introduction The use of chalcogenide alloys for optical data storage was first reported by S R. Ovshinsky in 1970. Research works dealt mostly with Te-based alloys because the Te-based media have high optical absorption, low thermal conductivity and adequate glass formation ability, such as TeGebS, TeSeGa, TeGeSnAu, TeGe, GeSb<sub>2</sub>Te<sub>4</sub> etc., of which GeSb<sub>2</sub>Te<sub>4</sub> com-展开更多
文摘1 Introduction The use of chalcogenide alloys for optical data storage was first reported by S R. Ovshinsky in 1970. Research works dealt mostly with Te-based alloys because the Te-based media have high optical absorption, low thermal conductivity and adequate glass formation ability, such as TeGebS, TeSeGa, TeGeSnAu, TeGe, GeSb<sub>2</sub>Te<sub>4</sub> etc., of which GeSb<sub>2</sub>Te<sub>4</sub> com-
