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Gadolinium in lutetium fluoride—an electron paramagnetic resonance study

Gadolinium (Gd 3+) in Czochralski-grown lutetium fluoride (LuF 3) has been investigated by electron paramagnetic resonance (EPR). Detailed analysis of the EPR angular dependencies reveals that Gd 3+ entered substitutionally for Lu 3+ in monoclinic C s site symmetry. The Lu site seems to be more dist...

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Bibliographic Details
Published in:The Journal of physics and chemistry of solids 2001-03, Vol.62 (3), p.485-489
Main Authors: Guedes, K.J, Krambrock, K, Gesland, J.Y
Format: Article
Language:English
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Summary:Gadolinium (Gd 3+) in Czochralski-grown lutetium fluoride (LuF 3) has been investigated by electron paramagnetic resonance (EPR). Detailed analysis of the EPR angular dependencies reveals that Gd 3+ entered substitutionally for Lu 3+ in monoclinic C s site symmetry. The Lu site seems to be more distorted by the Gd ion as compared to the Y site in YF 3. The zero-field splitting of the ground state b 2 0 is −1.8372 GHz which is more than twice compared to that of Gd 3+ in host crystals of LaF 3, in which gadolinium has the same co-ordination number. The results of the fine structure analysis are compared to a similar study in the iso-structural host YF 3. The obtained results seem to be in contrast to the superposition model.
ISSN:0022-3697
1879-2553
DOI:10.1016/S0022-3697(00)00190-6