A study of the crystallization kinetics of Sb-Se-Ge and Sb-Se-Ge-In chalcogenide glasses for applications as phase change materials

Abstract

ABSTRACT Chalcogenide glasses are unquestionably one of the most popular materials known for their phase change property. Phase change materials (PCM) have a key role in the field of photonics, memory devices, imaging, etc. With an aim to study the worth of ternary Sb 10 Se 90-x Gex (x = 0, 19, 21, 23, 25, 27) and quaternary Sb 10 Se 65 Ge 25-y Iny (y = 0, 3, 6, 9, 12, 15) chalcogenide systems as PCM, the composition variation and effect of dopants on the thermal properties of two systems has been probed. The thermal stability of two glass systems has been investigated using criteria such as the S parameter, fragility index, and rate constants at glass transition and crystallization temperatures. The mechanism of the phase change phenomenon occurring in the glasses has been studied using the Avrami index.