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Study of CaTiO3 structure under high pressure
Wu X(巫翔); Wu ZY(吴自玉); Guo L(郭林); Liu J(刘景); Li XD(李晓东); Wu, X; Qin, S; Wu, ZY; Dong, YH; Liu, J; Li, XD
Corresponding AuthorChinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China ; Peking Univ, Dept Geol, Beijing 100871, Peoples R China
AbstractIn situ high-pressure (up to 44.53 GPa) energy dispersive x-ray diffraction experiments have been carried out on CaTiO3 in a diamond anvil cell at room temperature by using synchrotron radiation. Experimental data show that the a and b axes have similar compressibilities with large variation, while the c axis is less compressible with increasing pressure. However, there is no evidence of any structural transformation in this pressure range. The isothermal P-V equation of the state of CaTiO3 is fitted using the Murnaghan equation of state, which yields values of V-0 = 0.2245 (6) nm(3) and K-0 = 222 (9) GPa assuming the pressure derivative K'(0) = 4. According to the relation of the pseudo-cubic angle gamma(pc), and pressure, the structure of CaTiO3 will reduce its symmetry under hydrostatic pressure.
KeywordCaTiO3 structure high pressure equation of state
Subject AreaPhysics
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000221946200065
Citation statistics
Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Wu X,Wu ZY,Guo L,et al. Study of CaTiO3 structure under high pressure[J]. ACTA PHYSICA SINICA,2004,53(6):1967-1971.
APA 巫翔.,吴自玉.,郭林.,刘景.,李晓东.,...&Li, XD.(2004).Study of CaTiO3 structure under high pressure.ACTA PHYSICA SINICA,53(6),1967-1971.
MLA 巫翔,et al."Study of CaTiO3 structure under high pressure".ACTA PHYSICA SINICA 53.6(2004):1967-1971.
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