Eu2(MoO4)3 single crystal at high pressure:: Structural phase transitions and amorphization probed by fluorescence spectroscopy -: art. no. 094117

被引:49
|
作者
Machon, D
Dmitriev, VP
Sinitsyn, VV
Lucazeau, G
机构
[1] Inst Natl Polytech Grenoble, CNRS, LEPMI, F-38402 St Martin Dheres, France
[2] European Synchrotron Radiat Facil, SNBL, Grp Struct Mat Extreme Condit, F-38043 Grenoble, France
[3] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia
来源
PHYSICAL REVIEW B | 2004年 / 70卷 / 09期
基金
俄罗斯基础研究基金会;
关键词
D O I
10.1103/PhysRevB.70.094117
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Pressure-induced phase transitions in Eu-2(MoO4)(3) single crystals were studied by fluorescence spectroscopy in the range of ambient pressure to 10 GPa. The spectral range investigated was limited to the D-5(0)-->F-7(J), J=0,1,2, transitions. First, low temperature data at ambient pressure were collected for assigning spectra. The spectral changes observed with pressure increase were interpreted in terms of consecutive structural transitions, and possible space groups for the corresponding phases are proposed. A comparison between x-ray diffraction and optical spectroscopic data serves to indicate that amorphization in Eu-2(MoO4)(3) begins by a disordering of the oxygen sublattice.
引用
收藏
页码:094117 / 1
页数:10
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