Abstract
Electron paramagnetic resonance in single crystals of CuTiF6⋅4H2O was studied between 77 and 485 K in the frequency ranges 23–25 and 34–36 GHz. The monoclinic lattice has two magnetically distinct Cu2+ sites, but (except at 4.2 K) only one resonance line was observed at all orientations. Assuming tetragonal symmetry at each Cu2+ site, the observed g values were used to determine the single ion parameters g∥ = 2.403±0.005 and g⊥ = 2.082±0.002 at 77 K. Linewidth data in the ac plane were explained in terms of the exchange narrowing of the line broadened by the dipolar and unresolved hyperfine interactions.
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