Anharmonicity and scissoring modes in the negative thermal expansion materials ScF3 and CaZrF6
We use a symmetry-motivated approach to analyzing X-ray pair distribution functions to study the mechanism of negative thermal expansion in two ReO3-like compounds: ScF3 and CaZrF6. Both average and local structures suggest that it is the flexibility of M-F-M linkages (M = Ca, Zr, Sc) due to dynamic...
Main Authors: | Bird, TA, Woodland-Scott, J, Hu, L, Wharmby, MT, Chen, J, Goodwin, AL, Senn, MS |
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Format: | Journal article |
Language: | English |
Published: |
American Physical Society
2020
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