EPR and Optical Studies of Vanadium Doped Potassium Dihydrogen Citrate (C 6H 7KO 7) Single Crystal

Abstract

An EPR and optical studies of VO 2+ doped potassium dihydrogen citrate (PDHC) single crystals have been carried out at room temperature. It crystallizes in triclinic symmetry with the unit cell dimensions: a = 11.343 , b = 13.078 , c = 6.272 , α = 89.79°, β = 94.36°, γ = 104.2°. The angular variation of EPR spectra have shown that two different VO 2+ complexes are located in different chemical environments and each environment contains one magnetically VO 2+ site occupying substitutional position in the lattice and show very high angular dependence. © 2011 Elsevier B.V. All rights reserved.