Glass formation in the GexTe100x binary system: Synthesis by twin roller quenching and co-thermal evaporation techniques - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Non-Crystalline Solids Année : 2009

Glass formation in the GexTe100x binary system: Synthesis by twin roller quenching and co-thermal evaporation techniques

Résumé

The Ge–Te system exhibits one main composition domain where glasses can be easily prepared by melt quenching technique; this domain is centered on the eutectic composition Ge15Te85. In this work, bulk flakes and films of composition GexTe100x with x 6 50 at.% were prepared by two different quenching techniques: (i) the twin roller quenching for bulk flakes and, (ii) the co-thermal evaporation for films (with thickness comprised between 2 and 14 lm). Electron Probe Micro-Analysis was used to check the composition of the materials while X-ray diffraction allowed identifying the amorphous state and/ or the crystalline phases present in the GexTe100x samples. Thermal properties for both types of materials were investigated by differential scanning calorimetry. The glass-forming regions were: 11.7– 22.0 at.% Ge for bulk flakes and 10.2–35.9 at.% Ge for films. A similar thermal behavior of bulk flakes and thick films was highlighted by Differential Scanning Calorimetry.

Dates et versions

hal-00490776 , version 1 (09-06-2010)

Identifiants

Citer

Andrea Piarristeguy, E. Barthélémy, Milos Krbal, Jérôme Frayret, Caroline Vigreux, et al.. Glass formation in the GexTe100x binary system: Synthesis by twin roller quenching and co-thermal evaporation techniques. Journal of Non-Crystalline Solids, 2009, 355, pp.2088-2091. ⟨10.1016/j.jnoncrysol.2009.04.072⟩. ⟨hal-00490776⟩
49 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More