The valence of cerium in metals (invited)
- 15 March 1984
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 55 (6) , 1904-1909
- https://doi.org/10.1063/1.333516
Abstract
The valence of Ce in solids can be measured by LIII x‐ray absorption. One finds γ‐ and α‐like materials with Ce valences clustering near v≳3 and near v≊3.25, respectively. There are no Ce metals with valence four. The valence of Ce is determined by a competition between the elastic strain energy of the mixture of three and four valent Ce atoms and the free energy due to configurational mixing. The latter has a minimum near valence 3.25, which decreases strongly with decreasing volume and eventually traps the valence of all α‐like materials near its bottom.This publication has 23 references indexed in Scilit:
- Anomalous saturation of mixed valence in cerium-based systems as studied by x-ray absorptionPhysical Review B, 1983
- -edge x-ray absorption spectra ofPhysical Review B, 1983
- High-pressure device for use in low energy x-ray absorption spectroscopyNuclear Instruments and Methods in Physics Research, 1983
- Kondo Volume Collapse and theTransition in CeriumPhysical Review Letters, 1982
- Volume collapse in the Kondo latticePhysics Letters A, 1982
- Extended X-Ray-Absorption Fine-Structure Studies of Electron-Lattice Correlations in Mixed-ValenceSPhysical Review Letters, 1980
- Investigation of thephase transition in cerium by Compton scatteringPhysical Review B, 1980
- The α-γ transition in cerium is a Mott transitionPhilosophical Magazine, 1974
- Concerning the valences of the cerium allotropesJournal of the Less Common Metals, 1963
- Rare-Earth and Transuranic ElementsPhysical Review B, 1941