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Thermoelectric Properties of Stoichiometric Compounds in the (SnTe) x (Bi 2 Te 3 ) y System
Author(s) -
Kuropatwa Bryan A.,
Kleinke Holger
Publication year - 2012
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201200284
Subject(s) - ternary operation , thermoelectric effect , stoichiometry , seebeck coefficient , materials science , tellurium , crystallography , chemistry , physics , metallurgy , thermodynamics , computer science , programming language
Various compounds in the (SnTe) x (Bi 2 Te 3 ) y series are explored by a number of techniques including diffractometry and physical property measurements. Through variation in the x and y integers, one is able to obtain a series of ternary compounds: SnBi 2 Te 4 , SnBi 4 Te 7 , SnBi 6 Te 10 , and Sn 2 Bi 2 Te 5 each show complex layering motifs similar to that of Bi 2 Te 3 . These compounds' increased complexity makes them of interest with respect to thermoelectric studies. The ZT values for cold‐pressed annealed pellets are at room temperature 0.33 for SnBi 2 Te 4 , 0.27 for SnBi 4 Te 7 , and 0.15 for SnBi 6 Te 10 .