Enthalpies of formation of the La-Zn compounds between 298 K and 910 K Experimental and theoretical investigations

The enthalpies of formation at 298 K of the eight La-Zn line phases are determined from the combination of solution enthalpies at infinite dilution obtained by the drop method in liquid tin at 665 K. For comparison, using the Density-Functional Theory, these thermodynamical growths are calculated at...

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Bibliographic Details
Published in:Journal of alloys and compounds 2009-05, Vol.475 (1-2), p.79-85
Main Authors: BERCHE, A, MARINELLI, F, MIKAELIAN, G, ROGEZ, J, RECORD, M.-C
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physics
Thermal properties of condensed matter
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Summary:The enthalpies of formation at 298 K of the eight La-Zn line phases are determined from the combination of solution enthalpies at infinite dilution obtained by the drop method in liquid tin at 665 K. For comparison, using the Density-Functional Theory, these thermodynamical growths are calculated at 0 K for the LaZn, LaZn2, LaZn5 and La2Zn17 compounds. Both based on our experimental and theoretical works and on literature data, the enthalpies of formation at 910 K of all the compounds are estimated and the heat contents between 298 K and 910 K are calculated.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2008.07.060