Abstract
Measurements of the longitudinal sound velocity in hcp as a function of direction relative to the hexagonal axis are reported for molar volumes between 20.3 and 17.3 /mole. The variation of with molar volume is much stronger than predicted by theory. Agreement is found with theoretical predictions for the anisotropy of .
- Received 17 December 1969
DOI:https://doi.org/10.1103/PhysRevLett.24.365
©1970 American Physical Society