- Conference date: 24-28 June 2002
- Location: Rome (Italy)
Original information on local thermal expansion can be obtained through a cumulant analysis of EXAFS. The difference between first and third EXAFS cumulants, and the comparison with Bragg diffraction results, can help in disentangling the contributions to thermal expansion of potential anharmonicity and geometrical effects. In germanium, the perpendicular Mean Square Relative Displacement has been obtained from EXAFS. In Ag2O, whose framework structure exhibits negative thermal expansion, a positive expansion of the Ag–O bond has been measured and the deformation of the Ag4O structural units monitored.
- Thermal expansion
- Extended X-ray absorption fine structure spectroscopy
- Thermal analysis
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