The electrical switching and thermal behavior of bulk Ge15Te85 − xSnx and Ge17Te83 − xSnx glasses

► Memory type electrical switching observed in bulk Ge-Te-Sn glasses. ► Composition dependence of Crystallization temperature and thermal stability studied. ► The composition dependence of electrical switching and thermal behaviors are consistent. ► No manifestation of rigidity percolation in composition variation of Vt.