Features of the pressure-induced phase transitions in Eu2(MoO4)3 single crystals

被引：0
|
作者：
I. M. Shmyt’ko
E. A. Kudrenko
V. V. Sinitsyn
B. S. Red’kin
E. G. Ponyatovsky
机构：
[1] Russian Academy of Sciences,Institute of Solid State Physics
来源：
Journal of Experimental and Theoretical Physics Letters | 2005年 / 82卷
关键词：
74.50.+r; 74.80.Fp;
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摘要：
The structural changes induced by a 9-GPa pressure in Eu2(MoO4)3 single crystals at room temperature have been studied using x-ray diffraction. It is established that a structural phase transition from the initial tetragonal phase to the new high-pressure tetragonal phase occurs rather than solid-phase amorphization that was observed previously in polycrystalline samples. The samples in the observed transition remain single-crystalline despite a significant difference (ΔV ∼ 18%) between the specific volumes of the initial and final phases. It is shown that the transition from the initial state to the high-pressure phase occurs via the formation of broad transition zones featuring a continuous and smooth change of the crystal lattice parameters.
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页码：409 / 412
页数：3
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