Electron paramagnetic resonance study of Cr3+ions in (NH4)(2)Co(SO4)(2) center dot 6H(2)O single crystal

摘要

The EPR of Cr3+ ions in ammonium cobalt sulphate hexahydrate, (NH4)(2)Co(SO4)(2)center dot 6H(2)O, single crystal have been studied at room temperature at Q band frequency. Cr3+ ion replaces Co2+ ion substitutionally in two magnetically inequivalent sites and exhibit orthorhombic symmetry. The spin Hamiltonian parameters are determined. The value of g tensor is found to be largely anisotropic. The D value of both sites are evaluated and correlated with bonding between water dipoles and Cr3+ ions. (c) 2006 Elsevier Ltd. All rights reserved.