Ternary chlorides in the systems [formula omitted] and [formula omitted]

The phase diagram of the system RbCl ErCl 3 was investigated by means of DTA and the system CsCl ErCl 3 was re-investigated. The existence of the caesium compounds Cs 3ErCl 6 (dimorphic), Cs 2ErCl 5, Cs 3Er 2Cl 7 and CsEr 2Cl 7 was confirmed. In the system RbCl ErCl 3 , there are two dimorphic, cong...

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Bibliographic Details
Published in:Thermochimica acta 1996-07, Vol.282, p.297-304
Main Authors: Büchel, Dorothea, Krok-Kowalski, Jozef, Seifert, Hans-Joachim
Format: Article
Language:English
Subjects:
Alkali metal chloride/erbium chloride systems
Phase diagrams
Ternary erbium chlorides
Thermodynamics
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Summary:The phase diagram of the system RbCl ErCl 3 was investigated by means of DTA and the system CsCl ErCl 3 was re-investigated. The existence of the caesium compounds Cs 3ErCl 6 (dimorphic), Cs 2ErCl 5, Cs 3Er 2Cl 7 and CsEr 2Cl 7 was confirmed. In the system RbCl ErCl 3 , there are two dimorphic, congruently melting compounds, Rb 3ErCl 6 and RbEr 2Cl 7. The incongruently melting compound Rb 2ErCl 5 (Cs 2DyCl 5 structure) is stable at temperatures higher than 348°C. The thermodynamic stabilities of the compounds were determined by solution calorimetry and e.m.f. measurements in a galvanic chlorine cell for solid electrolytes.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(95)02811-0