Crystallization properties of arsenic doped GST alloys.

ABSTRACT: We present the enhanced properties observed in the phase change memory alloy Ge₂Sb₂Te₅ (GST) when doped with arsenic. Although arsenic is known as a toxic element, our observations show that significant improvement can be obtained in GST systems on thermal stability, transition temperature between amorphous and crystalline phases and switching behaviors when doping with arsenic. Though both the GST and arsenic doped GST are amorphous in the as-deposited state, only GST alloy turns to crystalline NaCl-type structure after annealing at 150 °C for 1 h. Results from the resistance versus temperature study show a systematic increase in the transition temperature and resistivity in the amorphous and crystalline states when the arsenic percentage in the GST alloy

SUBMITTER: Madhavan VE 

PROVIDER: S-EPMC6737191 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature