Mechanical alloying synthesis of K2Bi8Se 13- type solid solutions
Paraskevopoulos, K. M.
Chung, D. Y.
Kanatzidis, M. G.
PublisherAffiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, 1678, Cyprus
Affiliation: Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece
Affiliation: Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, United States
Affiliation: Department of Chemistry, Northwestern University, Evanston, IL 60208, United States
Correspondence Address: Toumpas, N.
Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, 1678, Cyprus
SourceMaterials Research Society Symposium Proceedings
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Solid solutions of β-K2Bi8-xSb xSe13 are an interesting series of materials for thermoelectric investigations due to their very low thermal conductivity and highly anisotropic electrical properties. In this work, we aimed to synthesize solid solutions of β-K2Bi8-xSb xSe13 type materials using powder techniques. The synthesis was based on mechanical alloying as well as sintering procedures. The products were studied in terms of structural features, composition and purity with powder x-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. Preliminary results on thermoelectric properties as well as IR reflectivity measurements are presented. © 2008 Materials Research Society.