| Numéro |
J. Phys. Colloques
Volume 41, Numéro C8, Août 1980
Fourth International Conference on Liquid and Amorphous Metals
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|---|---|---|
| Page(s) | C8-595 - C8-598 | |
| DOI | https://doi.org/10.1051/jphyscol:19808151 | |
J. Phys. Colloques 41 (1980) C8-595-C8-598
DOI: 10.1051/jphyscol:19808151
DENSITY, COMPRESSIBILITY, SPECIFIC HEAT AND DIFFRACTION DATA OF LITHIUM-MAGNESIUM ALLOYS
H. Ruppersberg1, J. Saar1, W. Speicher1 et P. Heitjans21 F.B. Angewandte Physik der Universität des Saarlandes, D-6600 Saarbrücken, R.F.A.
2 Fachbereich Physik der Universität Marburg and ILL Grenoble, France
Abstract
For LiMg liquid alloys the density and the speed of ultrasonic waves were measured for temperatures between the liquidus and 970 ± 80 K, depending on the sample. The specific heat at constant pressure was determined for liquid and solid alloys at the compositions xMg < 0.50 and xMg < 0.60, respectively. The Scc (q) partial structure factor was measured by neutron diffraction in the liquid state at 695 and 875 K for the zero-alloy composition Li0.7Mg0.3. A small preference for unlike nearest neighbours is observed which diminishes with rising temperature. The volume per atom varies almost linearly with composition. However, the coefficient of thermal expansion, and the other properties which have been measured, show more or less pronounced deviation from linear behaviour. The excess specific heat is larger for the liquid than for the solid phase.