Crystallization behavior of Sb_(70)Te_(30) and Ag_3ln_5Sb_(60)Te_(32) chalcogenide materials for optical media applications

摘要

Addition of In and Ag into eutectic Sb_(70)Te_(30) fast-growth material was studied. We explored the optical transitions and crystallization kinetics of Sb_(70)Te_(30) and Ag_3In_5Sb_(60)Te_(32) recording films. The results showed that Ag_3In_5Sb_(60)Te_(32) has a higher crystallization temperature but a similar melting point compared to Sb_(70)Te_(30). In both the crystalline and amorphous states, addition of Ag and In increased the refractive index and decreased the extinction coefficient of Sb_(70)Te_(30). Ag_3In_5Sb_(60)Te_(32) has better thermal stability and a lower crystallization speed than Sb_(70)Te_(30) film.