Phase diagrams of the Ln2S3-EuS (Ln = La-Gd) systems

The phase diagrams of the Ln 2 S 3 -EuS (Ln = La-Gd) systems were studied. In these systems, continuous series of solid solutions form between γ-Ln 2 S 3 and EuLn 2 S 4 (Th 3 P 4 structural type), and also eutectics between EuLa 2 S 4 and a solid solution based on EuS form at the following coordinat...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2013, Vol.58 (12), p.1561-1566
Main Authors: Andreev, O. V., Ruseikina, A. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Physicochemical Analysis of Inorganic Systems
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Summary:The phase diagrams of the Ln 2 S 3 -EuS (Ln = La-Gd) systems were studied. In these systems, continuous series of solid solutions form between γ-Ln 2 S 3 and EuLn 2 S 4 (Th 3 P 4 structural type), and also eutectics between EuLa 2 S 4 and a solid solution based on EuS form at the following coordinates: 71.5 mol % EuS, 2280 K; 66.5 mol % EuS, 2240 K; and 63.5 mol % EuS, 2100 K. The characteristics of the forming compounds are the following: EuLa 2 S 4 : a = 0.8759 nm, T melt = 2420 K, and H = 2380 MPa; EuNd 2 S 4 : a = 0.8615 nm, T melt = 2380 K, and H = 2530 MPa; and EuGd 2 S 4 : a = 0.8507 nm, T melt = 2300 K, and H = 2670 MPa.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023613120036