Electron Spin Resonance Studies of VO²⁺ in Rb₂SO₄ Single Crystals

Abstract

The electron spin resonance spectrum of vanadyl ion (VO²⁺) in single crystals of Rb₂SO₄ is studied. The V–O axis is found to have several possible orientations. However, in four different orientations the number of spins are more and much more as compared to the number of spins in all other orientations. The spectra due to VO²⁺ ions in these four positions have been analysed and the spin-Hamiltonian parameters at X-band are determined.