Iron-Doped Gallium Borate Crystals: Synthesis and ESR Study of Local Disorder

High quality FexGa1-xBO3 single crystals with 0 ≤ x ≤ 1 were synthesized and studied by electron magnetic resonance in the temperature range from 4 to 290 K. At low x, only the electron spin resonance (ESR) of diluted Fe3+ ions is present. Fitting to the experimental ESR spectra, assuming distributions of Fe3+ ligand coordinates, has shown the existence of local disorder in the crystals

Optical and magneto-optical properties of FeₓGa₁₋ₓBO₃ crystals

The single crystals of FeₓGa₁₋ₓBO₃ with 0 ⁴Eg, ⁴A₁g d-d transitions and its temperature dependence were measured in the crystal containing 67 % of Fe for the first time