The effect of Ti4+ ions on some magnetic properties of Li ferrite

Abstract

Magnetic properties of the spinel structure Li0.5 + 0.5xTixFe2.5-1.5xO4 with x = O up to 0.5 have been studied. The initial permeability μi was measured as a function of temperature at a constant frequency of 10 kHz. A maximum value was observed for each composition indicating the Curie temperature TC which decreases with increasing Ti concentration. The magnetization M and B-H loop were measured at RT in the range of magnetizing field from O up to 1200 Am-1 and at constant field H = 205 Am-1, respectively. The relative permeability μr depends on the magnetizing field and composition. It was found from the B-H loop that the remanence induction Br and the apparent loss energy PS depend on the composition but the coercive force Hc is independent of composition.