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Abstract:
The local magnetic properties of Yb3+ in the layered honeycomb material YbCl3 were investigated by electron spin resonance on single crystals. For in-plane and out-of-plane field orientations the g-factor shows a clear anisotropy ( and ), whereas the low temperature exchange coupling and the spin relaxation display a rather isotropic character. At elevated temperatures the contribution of the first excited crystal field level ( meV) dominates the spin relaxation.