Mossbauer effect studies on lithium ferrite substituted with chromium and antimony

The effect of Cr3+ concentration on the various hyperfine interactions for the ferrite system Li0.5+tCrxSbtFe2.5-2t-xO4, 0.0 less than or equal to x less than or equal to 1.0, x in steps of 0.2 and t = 0.1, have been studied at room temperature using Mossbauer spectroscopy. The isomershift and the quadrupole splitting are almost negligibly influenced by the change in chromium level. The internal nuclear magnetic field, as determined from the Mossbauer spectra and the linewidth are also studied with the Variation of composition. The results have been explained on the basis of various models and a cation distribution has been worked out.