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Article Dans Une Revue Journal of Applied Physics Année : 2011

High-pressure x-ray diffraction study of CdMoO4 and EuMoO4

Résumé

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.
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Dates et versions

hal-00626016 , version 1 (23-09-2011)

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Citer

D. Errandonea, D. Santamaria-Perez, S. N. Achary, A. K. Tyagi, Philippe Gall, et al.. High-pressure x-ray diffraction study of CdMoO4 and EuMoO4. Journal of Applied Physics, 2011, 109 (043510), pp.1-5. ⟨10.1063/1.3553850⟩. ⟨hal-00626016⟩
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