Interactions between Nd 3+ ions beyond the first neighbour shell in LaCl 3 and LaBr 3
- 22 June 1971
- journal article
- Published by The Royal Society in Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
- Vol. 323 (1554) , 341-360
- https://doi.org/10.1098/rspa.1971.0109
Abstract
Some components of the Aij interaction tensors for 3rd to 7th neighbouring Nd3+ ions in LaCl3 and LaBr3 have been measured by means of e. p. r. There are some appreciable super exchange contributions to these interactions. The trends in the variation from one neighbour to another were unexpected, 4th and 5th neighbours having much larger superexchange than 3rd neighbours. LaBr3 is similar to LaCl3 except that the exchange contributions are somewhat larger in LaBr3, corresponding to larger covalent overlap. The qualitative features of the measured exchange interactions are explained in terms of the details of the superexchange paths. For 7th neighbours the interaction is purely dipolar, and it seems likely that more distant neighbours will also have purely dipolar interactions.Keywords
This publication has 2 references indexed in Scilit:
- Interactions between Ce 3 + pairs and Nd 3 + pairs in LaCl 3 and LaBr 3Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1970
- High-Degree Electrostatic and Exchange Interactions in Rare-Earth CompoundsJournal of Applied Physics, 1969