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Synthesis and characterization of the compound CoSbS (Articolo in rivista)

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Synthesis and characterization of the compound CoSbS (Articolo in rivista) (literal)

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Carlini, R. 2,3, Artini, Cristina 1,2, Borzone, G. 2,3, Masini, Roberto 4, Zanicchi, Gilda 2,4, Costa, Giorgio 1,2 (2011)
Synthesis and characterization of the compound CoSbS
in Journal of thermal analysis and calorimetry (Print); SPRINGER, DORDRECHT (Paesi Bassi)
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Carlini, R. 2,3, Artini, Cristina 1,2, Borzone, G. 2,3, Masini, Roberto 4, Zanicchi, Gilda 2,4, Costa, Giorgio 1,2 (literal)

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[ 1 ] CNR SPIN Genova, I-16152 Genoa, Italy; [ 2 ] Univ Genoa, DCCI, I-16146 Genoa, Italy; [ 3 ] Natl Consortium Mat Sci & Technol, INSTM Genoa Res Unit, I-16146 Genoa, Italy; [ 4 ] CNR IMEM, I-16146 Genoa, Italy (literal)

Titolo

Abstract

In the search for new intermetallic materials with high thermoelectric performances, the Co-Sb-S ternary system has been explored and polycrystalline CoSbS samples have been prepared by a vapour phase technique starting from the pure elements. The crystal cell of CoSbS belongs to the Pbca space group and shows an orthorhombic structural arrangement with the following lattice parameters: a = 5.8341(2) A ° ; b = 5.9477(2) A ° , and c = 11.6540(4) A ° . The structure belongs to the pyrite-marcasite family, as Co forms tilted corner- and edge-sharing octahedra with three Sb and three S atoms. Scanning electronic microscopy (SEM), electron-probe microanalysis (EPMA) and X-ray powder diffraction were used to investigate the microstructure and to carry out the structural analysis; the crystal structure was refined by the Rietveld method using the DBWS-9807 program. The thermal stability of CoSbS was investigated referring to the ternary Co-S-Sb phase diagram and by differential thermal analysis (DTA) measurements. Thermoelectric power measurements at room temperature were also performed by a home-made instrument. (literal)

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