Reexamination of the crystal structure of a high-pressure phase in praseodymium metal
- 1 December 1982
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 53 (12) , 9212-9213
- https://doi.org/10.1063/1.330393
Abstract
H. K. Mao, R. M. Hazen, P. M. Bell, and J. Wittig [J. Appl. Phys. 52, 4572 (1981)] reported that praseodymium metal undergoes a crystallographic phase transformation from a distorted fcc structure to a distorted hcp structure at a pressure of ∼21 GPa. This phase change, further, is accompanied by a large volume decrease ∼19%. We have reexamined their powder diffraction data for the distorted hcp structure and find the data can be satisfactorily interpreted in terms of the well-known orthorhombic α-uranium type of structure. The volume decrease at the phase change is now estimated to be only ∼9.8%.This publication has 4 references indexed in Scilit:
- Evidence for 4f-shell delocalization in praseodymium under pressureJournal of Applied Physics, 1981
- FN: A criterion for rating powder diffraction patterns and evaluating the reliability of powder-pattern indexingJournal of Applied Crystallography, 1979
- The crystal structures of cerium metal at high pressureActa Crystallographica Section A, 1977
- Concerning the High Pressure Allotropic Modification of CeriumPhysical Review B, 1949