Abstract
Electron paramagnetic resonance (EPR) in the ground state of Gd3+ ions in (LuGd)3 Al5O12 single crystals has been found by monitoring the Ce3+ photoluminescence intensity under circularly polarized excitation in the presence of the 35 GHz microwave field. Due to spin selection rules for optical transitions, the circularly polarized excitation allowed monitoring the populations of the Ce3+ ground-state spin sublevels, which can be changed at the EPR of Gd3+ due to Gd–Ce cross relaxation.
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Acknowledgments
This work has been supported by the Russian Science Foundation under Agreement No. 14-12-00859 and by Philips. H.R. Asatryan and A.G. Petrosyan would like to acknowledge the support of the RFBR grant No. 15-52-05040 Arm_а and the grant 15RF-003 of the State Committee of Science of Armenia.
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Romanov, N.G., Tolmachev, D.O., Gurin, A.S. et al. The Gd–Ce Cross-Relaxation Effects in ODMR via Ce3+ Emission in Garnet Crystals. Appl Magn Reson 47, 737–744 (2016). https://doi.org/10.1007/s00723-016-0795-3
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DOI: https://doi.org/10.1007/s00723-016-0795-3