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Title: Elastic constants determined by nanoindentation for p-type thermoelectric half-Heusler

This paper presents a study of the elastic properties of the p-type thermoelectric half-Heusler material, Hf{sub 0.44}Zr{sub 0.44}Ti{sub 0.12}CoSb{sub 0.8}Sn{sub 0.2}, using nanoindentation. Large grain-sized polycrystalline specimens were fabricated for these measurements, providing sufficient indentation targets within single grains. Electron Backscatter Diffraction methods indexed the target grains for the correlation needed for our elastic analysis of individual single crystals for this cubic thermoelectric material. Elastic properties, including the Zener ratio and the Poisson ratio, obtained from the elasticity tensor are also reported.
Authors:
; ;  [1] ; ; ;  [2]
  1. Department of Mechanical Engineering, University of Houston, Houston, Texas 77204 (United States)
  2. Department of Physics and TcSUH, University of Houston, Houston, Texas 77204 (United States)
Publication Date:
OSTI Identifier:
22314332
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CORRELATIONS; DIFFRACTION METHODS; ELASTICITY; MONOCRYSTALS; POISSON RATIO; POLYCRYSTALS; TENSORS; THERMOELECTRIC MATERIALS