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Microstructure and Thermoelectric Properties of Higher Manganese Silicides

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Author(s): SHI Yong-Jun, LU Qing-Mei, ZHANG Xin, ZHANG Jiu-Xing

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 26;
Issue: 7;
Start page: 691;
Date: 2011;
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Keywords: higher manganese silicide; phase; microstructure; thermoelectric properties

ABSTRACT
Higher manganese silicides (HMS) bulk materials with the nominal compositions of MnSix (x = 1.60, 1.65, 1.68, 1.73, 1.81, 1.85) were prepared by arc―melting, annealing and spark plasma sintering. The phase structures and morphologies of the samples were investigated, and their thermoelectric properties were measured from 300¡æ to 600¡æ. The analyses of phase compositions revealed that the intensity of X―ray diffraction peaks was firstly enhanced and then weakened along with x value increasing. The phase composition were of HMS and MnSi for x
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