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As half-Heusler compounds are promising candidates for environmentally friendly and low-cost thermoelectric materials, not only a high figure of merit and efficiency are necessary but also detailed knowledge of mechanical properties and thermal expansion is compulsory. Although these properties are quite important to evaluate mechanical stability of a thermoelectric device under mechanical stress...
Transition metal atom (Co) substituted synthetic tetrahedrite compounds Cu12−xCoxSb4S13 (x=0, 0.5, 1.0, 1.5, 2.0) were prepared by solid state synthesis. X-Ray Diffraction (XRD) patterns revealed tetrahedrite as the main phase, whereas for the compounds with x=0, 0.5 a trace of impurity phase Cu3SbS4 was observed. The surface morphology showed a large grain size with low porosity, which indicated...
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