Abstract
A model is presented for uniaxial-stress-induced alterations in the intrinsically strainbroadened line shapes for magnetic-resonance absorption within a non-Kramers doublet for the point-group symmetries ${D}_{3d}$, ${C}_{3v}$, and ${O}_{h}$. (The term doublet is used here to denote the $|\ensuremath{\Delta}{M}_{s}|=2$ transition within a ground triplet.) The uniaxial stress is introduced as boundary conditions in the model for the intrinsically strain-broadened line shapes for non-Kramers doublets given previously. The effects of uniaxial stress are considered for the EPR where the local site symmetry is ${O}_{h}$ and ${D}_{3d}$. For the local symmetry ${C}_{3v}$, the effects of uniaxial stress are considered for the paraelectric resonance absorption. The model provides a means for evaluating the strength of the spin-lattice coupling from uniaxial-stress experiments, independent of the concentration of the paramagnetic impurity ions.
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