Neutron scattering evidence for fast ionic oxygen diffusion in the high temperature phases of La2O3
Open Access
- 1 January 1979
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 40 (10) , 1005-1012
- https://doi.org/10.1051/jphys:0197900400100100500
Abstract
Evidence for fast oxygen diffusion in the H and X high temperature phases of La2O3 is presented from neutron diffraction background analysis and neutron quasielastic scattering data. In the X phase at 2160 °C the translational self diffusion coefficient is of the order of 3 x 10 -5 cm2/s and the mean time between jumps on neighbouring tetrahedral sites is around 1.4 x 10-12 s. These are typical values for good superionic conductorsKeywords
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