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Article Dans Une Revue Applied Physics Letters Année : 2012

Crystallization of Ge2Sb2Te5 nanometric phase change material clusters made by gas-phase condensation

Résumé

The crystallization behavior of Ge2Sb2Te5 nanometric clusters was studied using X-ray diffraction with in situannealing. Clusters were made using a sputtering gas-phase condensation source, which allowed for the growth of well-defined, contaminant-free, and isolated clusters. The average size for the clusters is 5.7 ± 1 nm. As-deposited amorphous clusters crystallize in the fcc cubic phase at 180 °C, while for thin films, the phase change temperature is 155 °C. This observation illustrates the scalability of the Ge2Sb2Te5phase change from the amorphous to the cubic state in three-dimensionally confined systems in this size range.
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Dates et versions

hal-00989954 , version 1 (12-05-2014)

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G. Ghezzi, Robert Morel, A. Brenac, Nathalie Boudet, M. Audier, et al.. Crystallization of Ge2Sb2Te5 nanometric phase change material clusters made by gas-phase condensation. Applied Physics Letters, 2012, 101, pp.233113. ⟨10.1063/1.4769435⟩. ⟨hal-00989954⟩
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