Single crystal EPR and optical studies of paramagnetic ions doped zinc potassium phosphate hexahydrate - Part II: VO(II) - a case of substitutional site

Single crystal electron paramagnetic resonance (EPR) studies were carried a t room temperature for VO(II) doped zinc potassium phosphate hexahydrate. T he results indicate that the paramagnetic impurity has entered the lattice only substitutionally, as confirmed by the single crystal rotations. The sp in Hamiltonian parameters calculated from the spectra are g(//) = 1.9356, g (perpendicular to) = 1.9764, A(//) = 200.9 G and A(perpendicular to) = 76.5 G. The optical absorption spectrum exhibits three bands (800, 670 and 340 nm) suggesting the C-4v, symmetry and the optical parameters evaluated are Dq = 1492, Ds = - 3854 and Dt = 186 cm(-1). (C) 2001 Elsevier Science B.V. All rights reserved.