The Cr2+:CaO Jahn-Teller system
- 14 September 1979
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 12 (17) , 3561-3569
- https://doi.org/10.1088/0022-3719/12/17/026
Abstract
Acoustic paramagnetic resonance from Cr2+ ions in CaO has been observed at frequencies close to 9 GHz and detailed results have been obtained with the magnetic field H directed along the (111) direction. With this direction for H, the peaks in the APR spectrum are expected to arise from those Cr2+ ions occupying zero-strain sites as the Hamiltonian displays C3i symmetry. An analysis of the data obtained is given and it is shown that the results can be fitted to a multimode Jahn-Teller model. Values for the basic crystal-field parameters and an energy-level diagram for zero-strain sites are obtained.Keywords
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