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RESEARCH PRODUCT
High-pressure x-ray diffraction study of CdMoO4 and EuMoO4
Srungarpu N. AcharyDaniel ErrandoneaPhilippe GallDavid Santamaría-pérezPatrick GougeonAvesh K. Tyagisubject
DiffractionEquation of stateChemistryGeneral Physics and Astronomy02 engineering and technologyCrystal structure[CHIM.INOR]Chemical Sciences/Inorganic chemistry021001 nanoscience & nanotechnology01 natural sciencesCrystallographyHigh pressurePhase (matter)0103 physical sciencesX-ray crystallographyCompressibility010306 general physics0210 nano-technologyMonoclinic crystal systemdescription
International audience; We studied the effects of high pressure on the crystalline structure of scheelite-type CdMoO4 and EuMoO4. We found that the compressibility of the materials is highly nonisotropic, with the c-axis being the most compressible one. We also observed clear evidence of a structural phase transition at 12 GPa (CdMoO4) and 8.8 GPa (EuMoO4). The high-pressure phase has a monoclinic structure similar to M-fergusonite. The transition is reversible, and no volume change is detected between the low- and high-pressure phases. The results contradict early x-ray diffraction studies carried out in CdMoO4 and are compared with those obtained previously in isomorphic molybdates. Finally, the equation of state for both compounds is also determined.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-02-25 | Journal of Applied Physics |