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《中国物理C》 2011年05期
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High pressure X-ray diffraction study of SrMnO_3 perovskite

刘迎新  秦善  巫翔  蒋建中  Kikegawa Takumi  施光海  
【摘要】:Using a diamond anvil cell device and synchrotron radiation, the in-situ high-pressure structure of SrMnO 3 has been investigated. At pressure up to 28.6 GPa, no pressure-induced phase transition is observed. The lattice parameters as a function of pressure is reported, and the relationship of the axial compression coefficients is β a β c . The isothermal bulk modulus K 298 =266(4) GPa is also obtained by fitting the pressure- volume data using the Murnaghan equation of state.
【作者单位】State
【关键词】SrMnO high-pressure structure phase transition X-ray diffraction
【基金】:Supported by National Natural Science Foundation of China (40972029)
【分类号】:O434.12
【正文快照】:
1 Introduction Hexagonal ABX 3 perovskites are less common than cubic ones, and are typically formed when the A cations are too large to be accommodated in the BX 6 framework. It is well known that alkali-earth man- ganese oxides are typical compounds, w

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