학술논문
Temperature-dependent EXAFS study of the local structure and lattice dynamics in cubic Y2 O3 .
Document Type
Article
Author
Source
Subject
*LATTICE dynamics
*X-ray absorption
*TEMPERATURE
*
*
Language
ISSN
0909-0495
Abstract
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. [ABSTRACT FROM AUTHOR]