Study of the effect of rare-earth oxide addition on the magnetic and dielectric properties of Sr-hexaferrites

Magnetic and dielectric properties of M-type Sr-hexaferrites of composition (SrO)1-x (La2O3)x 5.7 Fe2O3, where x = 0.00, 0.04, 0.08 prepared by conventional ceramic technology at different sintering temperatures using magnetite of Cox’s Bazar beach sand, Bangladesh have been investigated in the present work. Investigations have been carried out by permeability, loss tangent, quality factor and dielectric constant measurements of various samples of Sr-hexaferrites with the addition of La2O3. In our entire study, magnetic and dielectric properties of Srhexaferrites have been found to be strongly dependent upon the additives, temperature and frequency