EPR Studies of VO2+ in Ba(ClO4)2 · 3H2O Single Crystals

Abstract

The results of an electron paramagnetic resonance (EPR) study of vanadyl ion VO2+ doped in single crystals of Ba (ClO<inf>4</inf>)<inf>2</inf> · 3H<inf>2</inf>O are reported. The spectra indicated the presence of two substitutional and interstitial sites depending on the orientation. The spin-Hamiltonian parameters were determined from single crystal and powder EPR data. These parameters were found to be axial symmetric for the powder sample, whereas they showed deviations from axial symmetry for the single crystal.