Abstract
The transition-metal alloy Mo–32 at. % Re was compressed in a diamond anvil cell to 193±8 GPa (volume fraction V/=0.721) and studied by x-ray diffraction using a synchrotron source. Copper was used as an internal pressure standard in the experiment. The bcc phase of this Mo-Re alloy was found to be stable to the highest pressure and the expected phase transformation to the hcp phase was not observed. The equation of state of the Mo-Re alloy is compared with its constituent metals. Mo-Re alloys show a rapid decrease in compressibility with increasing Re concentration. The rigid-band model for the alloy along with the first-principles theoretical calculations for pure Mo are not adequate to explain the experimental results.
- Received 26 January 1993
DOI:https://doi.org/10.1103/PhysRevB.47.11559
©1993 American Physical Society