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Article Dans Une Revue Journal of the American Ceramic Society Année : 2013

Synthesis of Germanium-Gallium-Tellurium (Ge-Ga-Te) Ceramics by Ball-Milling and Sintering

Résumé

In this paper, we present the preparation of a bulk material with a composition of 80GeTe2-20Ga2Te3 by combining mechanosynthesis and sintering. This composition cannot be prepared by conventional melt/quenching technique. The progressive evolution of the powder during ball milling is followed by XRD and DSC analysis. The final powder obtained is highly crystalline but a glass transition temperature is observed, indicating the presence of some amorphous phase remaining, allowing for its efficient sintering. By hot pressing, a dense bulk material with a fine microstructure and a high electrical conductivity is obtained. The synthesis method described represents a simple and cost effective way to produce tellurium-based materials of desired dimension with potential applications for optical storage or thermoelectric devices.

Domaines

Matériaux
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Dates et versions

hal-00858287 , version 1 (06-09-2013)

Identifiants

Citer

Mathieu Hubert, Elena Petracovschi, Xianghua Zhang, Laurent Calvez. Synthesis of Germanium-Gallium-Tellurium (Ge-Ga-Te) Ceramics by Ball-Milling and Sintering. Journal of the American Ceramic Society, 2013, 96 (5), pp.1444-1449. ⟨10.1111/jace.12299⟩. ⟨hal-00858287⟩
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