EPR STUDY OF MN2-CRYSTAL( ION DOPED IN POTASSIUM OXALATE MONOPERHYDRATE SINGLE)

An EPR study of Mn2+ ion-doped potassium oxalate monoperhydrate single crystal has been carried out at room temperature. Two magnetically eq uivalent but differently oriented interstitial sites have been found f or the Mn2+ dopants. The spin Hamiltonian parameters are found to be g (x) = g(y) = 2.0010, g(z) = 2.0015; b(2)(0) = -440, b(2)(2) = 150, b(4 )(0) = 0.1959; A(x) = A(y) = 97.5, A(z) = 98.5 x 10(-4) cm(-1) and pol ar angles theta = 25 degrees and phi = 30 degrees. The results obtaine d are compared with those of the isotypic crystal Mn2+ ion-doped potas sium oxalate monohydrate to assess the difference arising from the pre sence of H2O2 in the former and H2O in the latter. Superposition model analysis of zero field splitting for Mn2+ ion-doped potassium oxalate monoperhydrate single crystal has been carried out.