Valence Transformation of Eu Atoms Due to Defect Association in Cold-Worked EuMg Alloys
- 16 May 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 38 (20) , 1142-1144
- https://doi.org/10.1103/physrevlett.38.1142
Abstract
Magnetic susceptibility and Mössbauer-effect measurements on a series of dilute alloys of Eu in Mg have been performed. In strain-free samples the Eu ions are divalent, but in cold-worked samples a large fraction are converted to the trivalent state. Isochronal annealing studies suggest that this is related to the trapping of dislocations on impurity clusters with the valence change occurring because of the strain field of the dislocation.Keywords
This publication has 3 references indexed in Scilit:
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- Mixed-valence compoundsReviews of Modern Physics, 1976
- Electrical resistivity observations on quenched and cold-worked magnesiumActa Metallurgica, 1963