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Disorder and Transport Properties of In3SbTe2 – an X-ray, Neutron and Electron Diffraction Study

Schröder, Thorsten and Rosenthal, Tobias and Grott, Sebastian and Stiewe, Christian and de Boor , Johannes and Oeckler, Oliver (2013) Disorder and Transport Properties of In3SbTe2 – an X-ray, Neutron and Electron Diffraction Study. Zeitschrift für Anorganische und Allgemeine Chemie, 639 (14), pp. 2536-2541. Wiley. DOI: 10.1002/zaac.201300317

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Abstract

Quenched metastable In3SbTe2 was investigated by X-ray and neutron powder diffraction as well as by single-crystal X-ray diffraction. The average structure corresponds to the rocksalt type, the anion position being occupied by antimony and tellurium. Neutron data indicate no antisite disorder of indium and antimony. The compound is a high-temperature phase that can be quenched to yield a metastable compound at ambient temperature which, upon heating, decomposes at ca. 320 °C into InSb and InTe. Diffuse scattering in reconstructed X-ray and selected area electron diffraction patterns indicates local distortions of the crystal structure due to static atom displacement along <100> from the average positions, caused by the different size of the anions, but no superstructure. The electrical conductivity of In3SbTe2 is 3.2 × 104 S·cm–1 at 25 °C, the temperature characteristics correspond to metallic behavior. Consequently, the thermal conductivity is also rather high. The decomposition into InSb and InTe reduces the electrical conductivity by a factor of 3 in heterogeneous microstructures.

Item URL in elib:https://elib.dlr.de/85898/
Document Type:Article
Title:Disorder and Transport Properties of In3SbTe2 – an X-ray, Neutron and Electron Diffraction Study
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schröder, ThorstenLMU Munich, Department of Chemistry, Butenandtstr. 5-13 (D), 81377 Munich, GermanyUNSPECIFIED
Rosenthal, TobiasLMU Munich, Department of Chemistry, Butenandtstr. 5-13 (D), 81377 Munich, GermanyUNSPECIFIED
Grott, SebastianLMU Munich, Department of Chemistry, Butenandtstr. 5-13 (D), 81377 Munich, GermanyUNSPECIFIED
Stiewe, ChristianGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
de Boor , JohannesGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Oeckler, OliverLeipzig University, IMKM, Scharnhorststr. 20, 04275 Leipzig, GermanyUNSPECIFIED
Date:15 August 2013
Journal or Publication Title:Zeitschrift für Anorganische und Allgemeine Chemie
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:639
DOI :10.1002/zaac.201300317
Page Range:pp. 2536-2541
Publisher:Wiley
Status:Published
Keywords:Indium antimonide telluride; Metastable phase; X-ray diffraction; Neutron diffraction; Electron microscopy
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Energy-efficient Processes (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemische Prozesse (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Zabrocki, Dr. Knud
Deposited On:02 Dec 2013 15:31
Last Modified:21 Mar 2014 03:06

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