期刊
JOURNAL OF APPLIED PHYSICS
卷 109, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3553850
关键词
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资金
- Spanish MICCIN [MAT2010-21270-C04-01, CTQ2009-14596-C02-01, CSD2007-00045]
- Comunidad de Madrid
- ESF [S2009/PPQ-1551 4\161\893]
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. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3553850]
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