Magnetic Study of Dilute Magnetic Glasses: [40B2O3+30Na2O+(30-x)V2O5+xFe2O3] with x=0 to 5

A magnetic study of dilute magnetic glasses 40B2O3 + 30Na2O + (30 -x)V2O5 + xFe2O3 with x = 0, . . ., 5 (abbreviated as FVNBx) has been undertaken to understand the effect of magnetic interactions and super-exchange between like and unlike spins.Two complementary experimental techniques were used, namely, the magnetization measurement and the EPR spectroscopy.The study confirmed a minor presence of an active V 4+ oxidation state in the form of a...