Influence of V₂O₅ Addition on the Magnetic Properties of Li-Zn Ferrites

The structural property, bulk density and porosity of V₂OSUB5/SUB (0.0, 0.4, 0.8 and 1.2 wt.%) added Li-Zn ferrites are observed along with the surface morphology. The samples have been prepared by the solid-state reaction technique and sintered at 1050 ℃. The X-ray diffraction patterns of the prepared samples have shown the single phase cubic spinel structure. A microstructural study demonstrates that the grain size increases up to 0.8 wt.% V₂OSUB5/SUB and slightly decreased thereafter for 1.2 wt.% V₂OSUB5/SUB addition. The saturation magnetization value increases from 44.0 to 50.3 emu/g as the V₂OSUB5/SUB content increases up to 0.8 wt.%. The decrease of magnetization for 1.2 wt.% V2O5 content is apparent and it is found to be 47.3 emu/g. This may be related to the dilution effect with the excess of non-magnetic V2O5. It is also observed that the value of initial permeability increases up to 0.8 wt.% V₂OSUB5/SUB.