Abstract
The structure phase transition and the equation of state (EOS) of the third-period simple metal Al were investigated at pressure up to 333 GPa by powder x-ray diffraction experiments. The theoretically predicted fcc-hcp transition was observed at the reduced volume of 0.509(1), corresponding to the pressure of . From the obtained pressure-volume data, the pressure derivative of the bulk modulus for the EOS of fcc-Al was determined to be 4.83(3) by fitting to the Vinet formulation with a fixed value 72.7 GPa of obtained from previous ultrasonic experiments.
- Received 28 July 2005
DOI:https://doi.org/10.1103/PhysRevLett.96.045505
©2006 American Physical Society