Sodium under pressure: bcc to fcc structural transition and pressure-volume relation to 100 GPa
Abstract
The pressure-volume relation of sodium is measured up to 100 GPa using high-resolution angle-dispersive synchrotron x-ray diffraction. At a pressure of 65(1) GPa Na is found to undergo a structural phase transition from a body-centered to a face-centered-cubic modification. Total-energy calculations of Na under pressure are performed using the full-potential linearized augmented plane-wave method. The calculated pressure-volume relations and the bcc-fcc transition pressure are compared to the experimental results.
- Publication:
-
Physical Review B
- Pub Date:
- May 2002
- DOI:
- Bibcode:
- 2002PhRvB..65r4109H
- Keywords:
-
- 61.50.Ks;
- 61.66.Bi;
- 64.70.Kb;
- 62.50.+p;
- Crystallographic aspects of phase transformations;
- pressure effects;
- Elemental solids;
- Solid-solid transitions;
- High-pressure and shock wave effects in solids and liquids