Journal
SCRIPTA MATERIALIA
Volume 62, Issue 2, Pages 89-92Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2009.09.029
Keywords
Thermoelectricity; Spinodal decomposition; Nanostructure
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Demixing following a spinodal decomposition, takes place in Sn-lean compounds in the pseudo-ternary (Ge, Sn, Pb)Te system, giving rise to both Pb- and Ge-rich telluride areas. After quenching from the high-temperature single cubic phase in the course of an aging treatment at 663 K, a Ge0.6Sn0.1Pb0.3Te sample undergoes several microstructural stages. The last stage consists of nucleation and growth of nanosize particles which maintain their dimensional stability for relatively extended periods of time. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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