Physics – Condensed Matter – Materials Science
Scientific paper
2010-05-03
Physical Review B 81, 224115 (2010)
Physics
Condensed Matter
Materials Science
33 pages, 9 figures, 5 tables
Scientific paper
10.1103/PhysRevB.81.224115
We study the effects of pressure on the structural, vibrational, and magnetic behavior of cuproscheelite. We performed powder x-ray diffraction and Raman spectroscopy experiments up to 27 GPa as well as ab initio total-energy and lattice-dynamics calculations. Experiments provide evidence that a structural phase transition takes place at 10 GPa from the low-pressure triclinic phase (P-1) to a monoclinic wolframite-type structure (P2/c). Calculations confirmed this finding and indicate that the phase transformation involves a change in the magnetic order. In addition, the equation of state for the triclinic phase is determined: V0 = 132.8(2) A3, B0 = 139 (6) GPa and = 4. Furthermore, experiments under different stress conditions show that non-hydrostatic stresses induce a second phase transition at 17 GPa and reduce the compressibility of CuWO4, B0 = 171(6) GPa. The pressure dependence of all Raman modes of the triclinic and high-pressure phases is also reported and discussed.
Errandonea Daniel
Gonzalez Jesús J.
Lacomba-Perales R.
Manjon F. J.
Munoz Alberto
No associations
LandOfFree
High-pressure structural phase transitions in CuWO4 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 High-pressure structural phase transitions in CuWO4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-pressure structural phase transitions in CuWO4 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-658490