Electron spin-lattice relaxation in a true amorphous material : V4+ in V 2O5
Open Access
- 1 January 1983
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 44 (1) , 77-85
- https://doi.org/10.1051/jphys:0198300440107700
Abstract
The electron spin-lattice relaxation time T1 of V 4+ in amorphous V2O5 has been measured in the X-band between 1.4 K and 100 K : [FORMULA]. We explain this behaviour using a process requiring one two-level system (T.L.S.) modulating the crystal field, and one phonon. The characteristic temperature 56 K must be associated not with the maximum energy of the T.L.S. but with the cut-off in the distribution of the asymmetry parameter Δ. Spin-lattice relaxation is thus able to give informations about the asymmetryKeywords
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