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Article Dans Une Revue Applied Physics Letters Année : 2008

Temperature independence of pressure-induced amorphization of the phase-change memory alloy Ge2Sb2Te5

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.
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Dates et versions

hal-00341455 , version 1 (25-11-2008)

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Milos Krbal, Alexander Kolobov, Julien Haines, Annie Pradel, Michel Ribes, et al.. Temperature independence of pressure-induced amorphization of the phase-change memory alloy Ge2Sb2Te5. Applied Physics Letters, 2008, 93, pp.031918. ⟨10.1063/1.2956409⟩. ⟨hal-00341455⟩
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