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Title: A high-pressure route to thermoelectrics with low thermal conductivity: The solid solution series AgIn{sub x}Sb{sub 1−x}Te{sub 2} (x=0.1–0.6)

Metastable rocksalt-type phases of the solid solution series AgIn{sub x}Sb{sub 1−x}Te{sub 2} (x=0.1, 0.2, 0.4, 0.5 and 0.6) were prepared by high-pressure synthesis at 2.5 GPa and 400 °C. In these structures, the coordination number of In{sup 3+} is six, in contrast to chalcopyrite ambient-pressure AgInTe{sub 2} with fourfold In{sup 3+} coordination. Transmission electron microscopy shows that real-structure phenomena and a certain degree of short-range order are present, yet not very pronounced. All three cations are statistically disordered. The high degree of disorder is probably the reason why AgIn{sub x}Sb{sub 1−x}Te{sub 2} samples with 0.4
Authors:
; ; ; ;  [1] ; ; ;  [2] ;  [3]
  1. LMU Munich, Department of Chemistry, Butenandtstraße 5-13 (D), 81377 Munich (Germany)
  2. University of Augsburg, Institut für Physik, Universitätsstraße 1, 86159 Augsburg (Germany)
  3. Leipzig University, IMKM, Scharnhorststraße 20, 04275 Leipzig (Germany)
Publication Date:
OSTI Identifier:
22274099
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 206; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; ANTIMONY; CATIONS; CHALCOPYRITE; INDIUM IONS; PHASE TRANSFORMATIONS; POWDERS; PRESSURE RANGE MEGA PA 10-100; QUATERNARY ALLOY SYSTEMS; QUATERNARY AMMONIUM COMPOUNDS; SOLID SOLUTIONS; SYNTHESIS; TELLURIDES; TEMPERATURE DEPENDENCE; THERMAL CONDUCTIVITY; THERMOELECTRIC PROPERTIES; TRANSMISSION ELECTRON MICROSCOPY