Analysis of local symmetry and impurity location of Cu~(2+) ions doped C_8H_(11)KO_8 single crystal through EPR technique for site I

摘要

Electron paramagnetic resonance (EPR) studies have been investigated on Cu~(2+) ion incorporated into the single crystals of potassium succinate-succinic acid (KSSA) at room temperature. Two magnetically in-equivalent Cu~(2+) sites in the lattice are identified, among them site I has been reported. The spin Hamiltonian parameters are determined with the fitting of spectra to rhombic symmetry crystalline field. The co-ordination of the Cu~(2+) ion in this molecule is a distorted dodecahedron. From the calculated g_(xx), g_(yy), g_(zz) and A_(xx), A_(yy), A_(zz) and their directional cosines values, location of site I impurity ion Cu~(2+) could be identified as a substituitional one. Also the ground state wave function of the impurity ion was found to be d_(2~z).