Thermal expansion and structure of orthorhombic CaMnO3 |
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| Authors: | Qingdi Zhou |
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| Institution: | School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia |
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| Abstract: | The structure of CaMnO3 has been studied from room temperature to 800 °C by high-resolution synchrotron X-ray powder diffraction. It is concluded that CaMnO3 remains orthorhombic in Pbnm over the entire temperature range, with the expansion in the cell volume well fitted to the expression Vol=207.37(2)+0.00563(8)T+1.17(9)×10-6T2. The magnitude of the MnO6 tilts is estimated from the refined structural parameters and these progressively reduce as the temperate is increased. |
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| Keywords: | A Oxides C X-ray diffraction D Crystal structure D Thermal expansion |
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