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High-pressure X-ray diffraction and Raman spectroscopy of CaFe2O4-type beta-CaCr2O4
Zhai, SM; Yin, Y; Shieh, SR; Shan, SM; Xue, WH; Wang, CP; Yang, K; Higo, Y; Zhai, SM (reprint author), Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Ea, Guiyang 550081, Peoples R China.
2016
Source PublicationPHYSICS AND CHEMISTRY OF MINERALS
ISSN0342-1791
Volume43Issue:4Pages:307—314
Subtype期刊文献
AbstractIn 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.
KeywordFerrite-type Mgal2o4 Equation-of-state Calcium-ferrite Lower-mantle Phase-transitions Crystal-structure Chromite Diamond Transformations Chemistry
DOI10.1007/s00269-015-0795-0
Indexed BySCI
Language英语
WOS IDWOS:000373309600006
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25745
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorZhai, SM (reprint author), Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Ea, Guiyang 550081, Peoples R China.
Recommended Citation
GB/T 7714
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,2016,43(4):307—314.
APA Zhai, SM.,Yin, Y.,Shieh, SR.,Shan, SM.,Xue, WH.,...&Zhai, SM .(2016).High-pressure X-ray diffraction and Raman spectroscopy of CaFe2O4-type beta-CaCr2O4.PHYSICS AND CHEMISTRY OF MINERALS,43(4),307—314.
MLA Zhai, SM,et al."High-pressure X-ray diffraction and Raman spectroscopy of CaFe2O4-type beta-CaCr2O4".PHYSICS AND CHEMISTRY OF MINERALS 43.4(2016):307—314.
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