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题名:
High-pressure X-ray diffraction and Raman spectroscopy of CaFe2O4-type beta-CaCr2O4
作者: Zhai, SM; Yin, Y; Shieh, SR; Shan, SM; Xue, WH; Wang, CP; Yang, K; Higo, Y
刊名: PHYSICS AND CHEMISTRY OF MINERALS
出版日期: 2016
卷号: 43, 期号:4, 页码:307—314
关键词: FERRITE-TYPE MGAL2O4 ; EQUATION-OF-STATE ; CALCIUM-FERRITE ; LOWER-MANTLE ; PHASE-TRANSITIONS ; CRYSTAL-STRUCTURE ; CHROMITE ; DIAMOND ; TRANSFORMATIONS ; CHEMISTRY
DOI: 10.1007/s00269-015-0795-0
通讯作者: Zhai, SM (reprint author), Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Ea, Guiyang 550081, Peoples R China.
文章类型: 期刊文献
英文摘要: In situ high-pressure synchrotron X-ray diffraction and Raman spectroscopic studies of orthorhombic CaFe2O4-type beta-CaCr2O4 chromite were carried out up to 16.2 and 32.0 GPa at room temperature using multi-anvil apparatus and diamond anvil cell, respectively. No phase transition was observed in this study. Fitting a third-order Birch-Murnaghan equation of state to the P-V data yields a zero-pressure volume of V-0 = 286.8(1) angstrom(3), an isothermal bulk modulus of K-0 = 183(5) GPa and the first pressure derivative of isothermal bulk modulus K-0' = 4.1(8). Analyses of axial compressibilities show anisotropic elasticity for beta-CaCr2O4 since the a-axis is more compressible than the b- and c-axis. Based on the obtained and previous results, the compressibility of several CaFe2O4-type phases was compared. The high-pressure Raman spectra of beta-CaCr2O4 were analyzed to determine the pressure dependences and mode Gruneisen parameters of Raman-active bands. The thermal Gruneisen parameter of beta-CaCr2O4 is determined to be 0.93(2), which is smaller than those of CaFe2O4-type CaAl2O4 and MgAl2O4.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000373309600006
ISSN号: 0342-1791
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25745
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Zhai, SM,Yin, Y,Shieh, SR,et al. High-pressure X-ray diffraction and Raman spectroscopy of CaFe2O4-type beta-CaCr2O4[J]. PHYSICS AND CHEMISTRY OF MINERALS,2016-01-01,43(4):307—314.
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