High-pressure X-ray diffraction and Raman spectroscopy of CaFe2O4-type beta-CaCr2O4
Shuangming Shan; Shuangmeng Zhai; ji Higo; Ke YangYu; Ching-Pao Wang; Weihong Xue; uan YinSean R. Shieh
刊名Physics and Chemistry of Minerals
2016
卷号43期号:4页码:307-314
英文摘要
In situ high-pressure synchrotron X-ray diffraction and Raman spectroscopic studies of orthorhombic CaFe2O4-type β-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) Å3, 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 β-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 β-CaCr2O4 were analyzed to determine the pressure dependences and mode Grüneisen parameters of Raman-active bands. The thermal Grüneisen parameter of β-CaCr2O4 is determined to be 0.93(2), which is smaller than those of CaFe2O4-type CaAl2O4 and MgAl2O4.
学科主题地球深部物质与流体作用地球化学
语种英语
公开日期2017-06-15
内容类型期刊论文
源URL[http://ir.gyig.ac.cn:8080/handle/352002/6163]  
专题地球化学研究所_地球内部物质高温高压实验室_地球内部物质高温高压实验室_期刊论文
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GB/T 7714
Shuangming Shan,Shuangmeng Zhai,ji Higo,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 Shuangming Shan.,Shuangmeng Zhai.,ji Higo.,Ke YangYu.,Ching-Pao Wang.,...&uan YinSean R. Shieh.(2016).High-pressure X-ray diffraction and Raman spectroscopy of CaFe2O4-type beta-CaCr2O4.Physics and Chemistry of Minerals,43(4),307-314.
MLA Shuangming Shan,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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