Physics – Condensed Matter – Materials Science
Scientific paper
2012-03-09
JOURNAL OF APPLIED PHYSICS 111, 053519 (2012)
Physics
Condensed Matter
Materials Science
33 pages, 8 figures, 6 tables
Scientific paper
10.1063/1.3692807
In this paper we report a new high-pressure rhombohedral phase of Ce2Zr2O8 observed from high-pressure angle-dispersive x-ray diffraction and Raman spectroscopy studies up to nearly 12 GPa. The ambient-pressure cubic phase of Ce2Zr2O8 transforms to a rhombohedral structure beyond 5 GPa with a feeble distortion in the lattice. Pressure evolution of unit-cell volume showed a change in compressibility above 5 GPa. The unit-cell parameters of the high-pressure rhombohedral phase at 12.1 GPa are ah = 14.6791(3) {\AA}, ch = 17.9421(5) {\AA}, V = 3348.1(1) {\AA}3. The structure relation between the parent cubic (P2_13) and rhombohedral (P3_2) phases were obtained by group-subgroup relations. All the Raman modes of the cubic phase showed linear evolution with pressure with the hardest one at 197 cm-1. Some Raman modes of the high-pressure phase have a non-linear evolution with pressure and softening of one low-frequency mode with pressure is found. The compressibility, equation of state, and pressure coefficients of Raman modes of Ce2Zr2O8 are also reported.
Achary S. N.
Errandonea Daniel
Gomis Oscar
Kumar Ravhi. S.
Manjon F. J.
No associations
LandOfFree
New high-pressure phase and equation of state of Ce2Zr2O8 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with New high-pressure phase and equation of state of Ce2Zr2O8, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New high-pressure phase and equation of state of Ce2Zr2O8 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-302310