Temperature-dependent EXAFS study of the local structure and lattice dynamics in cubic Y2O3

The local structure and lattice dynamics in cubic Y2O3 were studied at the Y K-edge by X-ray absorption spectroscopy in the temperature range from 300 to 1273 K. The temperature dependence of the extended X-ray absorption fine structure was successfully interpreted using classical molecular dynamics and a novel reverse Monte Carlo method, coupled with the evolutionary algorithm. The obtained results allowed the temperature dependence of the yttria atomic structure to be followed up to ∼6 Å and to validate two force-field models.

Source: Journal of Synchrotron Radiation - February 17, 2016 Category: Physics Authors: Jonane, I.Lazdins, K.Timoshenko, J.Kuzmin, A.Purans, J.Vladimirov, P.Gräning, T.Hoffmann, J. Tags: EXAFS molecular dynamics reverse Monte Carlo evolutionary algorithm yttria research papers Source Type: research