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The phase relationship among compounds Ba1+ xFe2S4

Authors
Journal
Journal of Solid State Chemistry
0022-4596
Publisher
Elsevier
Publication Date
Volume
41
Issue
2
Identifiers
DOI: 10.1016/0022-4596(82)90191-8

Abstract

Abstract The dependence of composition of the phases Ba 1+ x Fe 2S 4 on sulfur vapor pressure and starting composition was investigated at 650, 747, and 800°C. The infinitely adaptive series Ba 1+ x Fe 2S 4 spans the compositions 0.072 ≤ x ≤ 0.142. The value of x decreases as the sulfur vapor pressure increases at a given temperature. Varying the ratio of Ba Fe in the starting mixture has no effect on the Ba 1+ x Fe 2S 4-sulfur fugacity relationship. The phase BaFe 2S 4 is not part of the infinitely adaptive series.

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