Velocity of Ultrasound in Lithium-Ammonia Solutions
- 5 April 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 168 (1) , 114-120
- https://doi.org/10.1103/PhysRev.168.114
Abstract
The velocity of 10-MHz sound waves in lithium-ammonia solutions has been determined for 23 different metal concentrations over the temperature range 89 to 240°K. By combining these data with the available density data, the adiabatic compressibility of these solutions has been determined. The compressibility is a monotonic increasing function of the concentration. An analysis of the sound velocity revealed a change in the dependence on concentration at a concentration of 5 mole%. This is the concentration at which the metal-nonmetal (Mott) transition occurs and is interpreted as evidence for a "structure" change accompanying the Mott transition.Keywords
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