Thermodynamics of phase changes in systems BaS-Ln sub(2)S sub(3) (Ln=Pr, Sm, Gd, Tb, Er, Lu)

Thermodynamic analyses of phase changes were carried out for the systems BaS-Ln sub(2)S sub(3) with Ln=Pr, Sm, Gd, Tb, Er, and Lu, and the phase diagrams have been experimentally constructed. Formation of the Ba sub(3)Ln sub(2)S sub(6) sulfides with Ln=Tb through Lu was predicted from the thermodyna...

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Bibliographic Details
Published in:Journal of phase equilibria and diffusion 2004-11, Vol.25 (6), p.515-519
Main Authors: Khritohin, NA, Andreev, O V, Mitroshin, O V, Korotkov, A S
Format: Article
Language:English
Subjects:
Erbium
Melting
Melts
Phase diagrams
Phase equilibria
Phase transformations
Sulfides
Thermodynamics
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Summary:Thermodynamic analyses of phase changes were carried out for the systems BaS-Ln sub(2)S sub(3) with Ln=Pr, Sm, Gd, Tb, Er, and Lu, and the phase diagrams have been experimentally constructed. Formation of the Ba sub(3)Ln sub(2)S sub(6) sulfides with Ln=Tb through Lu was predicted from the thermodynamic behavior of melts, and the existence of these phases has been experimentally confirmed. Heats of melting were estimated for the sulfides Ln sub(2)S sub(3), BaLn sub(2)S sub(4), and Ba sub(3)Ln sub(2)S sub(6).
ISSN:1547-7037
1863-7345
DOI:10.1007/s11669-004-0064-2