High pressure X-ray diffraction study of CaMnO3perovskite

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LIU Ying-Xin, QIN Shan, JIANG Jian-Zhong, Kikegawa Takumi and SHI Guang-Hai. High pressure X-ray diffraction study of CaMnO 3perovskite[J]. Chinese Physics C, 2010, 34(7): 1025-1028. doi: 10.1088/1674-1137/34/7/018
LIU Ying-Xin, QIN Shan, JIANG Jian-Zhong, Kikegawa Takumi and SHI Guang-Hai. High pressure X-ray diffraction study of CaMnO 3perovskite[J]. Chinese Physics C, 2010, 34(7): 1025-1028. doi:10.1088/1674-1137/34/7/018 shu
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Received: 2009-09-17
Revised: 2009-12-15
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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    High pressure X-ray diffraction study of CaMnO3perovskite

      Corresponding author:LIU Ying-Xin,

      Abstract:

      Using a diamond anvil cell device and synchrotron radiation, the in-situ high-pressure structure of CaMnO3has been investigated. In the pressure up to 36.5 GPa, no pressure-induced phase transition is observed. The pressure dependence on the lattice parameters of CaMnO3is reported, and the relationship of the axial compression coefficients is βacb. The isothermal bulk modulus K298=224 (25) GPa is also obtained by fitting the pressure-volume data using the Murnaghan equation of state.

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