Ref HAL: hal-00341455_v1
DOI: 10.1063/1.2956409
WoS: 000257968700035
Exporter : BibTex | endNote
29 Citations
Résumé:

n the temperature range from room temperature to about 150 °C, the prototypic phase-change material Ge2Sb2Te5 becomes amorphous upon hydrostatic compression. In the studied temperature range, the onset of amorphization is at about 15 GPa and the material completely amorphizes at 25 GPa; these values do not depend on temperature. Upon decompression, the amorphous phase is stable at lower temperatures, yet at higher temperatures (145 °C), the initial fcc phase is recovered upon decompression. A possible mechanism of pressure-induced amorphization and its implications for phase-change memories are discussed.