Pressure-induced phase transition of lead phosphate Pb-3(PO4)(2): X-ray diffraction and XANES
Qin, F; Wu, X; Zhai, SM; Qin, S; Yang, K; Chen, DL; Li, YC;陈栋梁; Li YC(李延春)
刊名PHASE TRANSITIONS
2014
卷号87期号:12页码:1255-1264
关键词phase transition XRD compressibility Pb-3(PO4)(2) XANES
学科分类Crystallography; Physics
DOI10.1080/01411594.2014.953504
英文摘要Lead phosphate Pb-3(PO4)(2) was investigated by in situ synchrotron radiation X-ray diffraction and X-ray absorption near-edge structure (XANES) combined with diamond anvil cell technique up to 60.9 GPa. A pressure-induced phase transition of Pb-3(PO4)(2) was observed from monoclinic (C2/c) to trigonal ( [GRAPHICS] ) phases at about 1.7 GPa at room temperature. The high-pressure annealing experiment indicates that the trigonal phase of Pb-3(PO4)(2) is stable at least up to 60.9 GPa. Isothermal pressure-volume relationship of trigonal Pb-3(PO4)(2) is well described by the third-order Birch-Murnaghan equation of state with V-0 = 533(1) angstrom(3), K-0 = 89(4) GPa and K-0(') = 5.8(2). In trigonal Pb-3(PO4)(2), the a-axis is more compressible than the c-axis, showing an anisotropy elasticity. XANES results reveal the evolution of Pb local environment, i.e. the first-shell coordination number of Pb1 changes from 9 to 12 and the average Pb-O bond length increases at the crossover of C2/c-to- [GRAPHICS] phase transition.
收录类别SCI
WOS记录号WOS:000346340900006
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225243
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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Qin, F,Wu, X,Zhai, SM,et al. Pressure-induced phase transition of lead phosphate Pb-3(PO4)(2): X-ray diffraction and XANES[J]. PHASE TRANSITIONS,2014,87(12):1255-1264.
APA Qin, F.,Wu, X.,Zhai, SM.,Qin, S.,Yang, K.,...&李延春.(2014).Pressure-induced phase transition of lead phosphate Pb-3(PO4)(2): X-ray diffraction and XANES.PHASE TRANSITIONS,87(12),1255-1264.
MLA Qin, F,et al."Pressure-induced phase transition of lead phosphate Pb-3(PO4)(2): X-ray diffraction and XANES".PHASE TRANSITIONS 87.12(2014):1255-1264.
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