From metastable to stable modifications-in situ Laue diffraction investigation of diffusion processes during the phase transitions of (GeTe)nSb2Te3 (6 < n < 15) crystals

Matthias N Schneider; Xavier Biquard; Christian Stiewe; Thorsten Schröder; Philipp Urban; Oliver Oeckler

doi:10.1039/c1cc15808b

From metastable to stable modifications-in situ Laue diffraction investigation of diffusion processes during the phase transitions of (GeTe)nSb2Te3 (6 < n < 15) crystals

Chem Commun (Camb). 2012 Feb 21;48(16):2192-4. doi: 10.1039/c1cc15808b. Epub 2011 Dec 16.

Authors

Matthias N Schneider¹, Xavier Biquard, Christian Stiewe, Thorsten Schröder, Philipp Urban, Oliver Oeckler

Affiliation

¹ Department of Chemistry, LMU Munich, Butenandtstrasse 5-13 (D), 81377 Munich, Germany.

PMID: 22180856
DOI: 10.1039/c1cc15808b

Abstract

Temperature dependent phase transitions of compounds (GeTe)(n)Sb(2)Te(3) (n = 6, 12, 15) have been investigated by in situ microfocus Laue diffraction. Diffusion processes involving cation defect ordering at ~300 °C lead to different nanostructures which are correlated to changes of the thermoelectric characteristics.