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

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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,^a Xavier Biquard,^b Christian Stiewe,^c Thorsten Schröder,^a Philipp Urban^ad and Oliver Oeckler*^ad

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* Corresponding authors

^a Department of Chemistry, LMU Munich, Butenandtstrasse 5-13 (D), 81377 Munich, Germany
E-mail: oliver.oeckler@gmx.de
Fax: +49 (0)89-2180-77440
Tel: +49 (0)89-2180-77421

^b CEA-Grenoble, DSM/INAC, 17 avenue des Martyrs, 38054 Grenoble Cedex 9, France

^c German Aerospace Centre, Linder Höhe, 51147 Cologne, Germany

^d IMKM, University of Leipzig, Scharnhorststr. 20, 04275 Leipzig, Germany

Abstract

Temperature dependent phase transitions of compounds (GeTe)_nSb₂Te₃ (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.

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

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Article information

DOI: https://doi.org/10.1039/C1CC15808B
Article type: Communication
Submitted: 19 Sep 2011
Accepted: 15 Nov 2011
First published: 16 Dec 2011

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Chem. Commun., 2012,48, 2192-2194

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From metastable to stable modifications—in situ Laue diffraction investigation of diffusion processes during the phase transitions of (GeTe)_nSb₂Te₃ (6 < n < 15) crystals

M. N. Schneider, X. Biquard, C. Stiewe, T. Schröder, P. Urban and O. Oeckler, Chem. Commun., 2012, 48, 2192 DOI: 10.1039/C1CC15808B

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