A REVIEW: EFFECT OF SUBSTITUTION ON MAGNETIC PROPERTIES OF CALCIUM HEXAGONAL FERRITES

Calcium hexaferrites are a subject of great interest due to their promising applications and narrow range of particle distribution. It offers good magnetic, electrical and magneto-optical properties with thermal and chemical stability along with low cost. The present review investigates the effect of divalent and trivalent ion substitution on Magnetic properties of Calcium Hexagonal Ferrites. The magnetic characteristics namely saturation magnetization (Ms), remanence (Mr) and coercivity (Hc) change with substitution of suitable divalent or trivalent ions occupying sublattice spin-up and spin-down sites into the crystal of Calcium hexagonal ferrites. In the present work we have studied calcium hexaferrites containing different types of substitutions. From the technological point of view substitution of different types of ions was found to be an effective way of improving and enhancing the quality of material and their magnetic characteristics which can lead to various potential applications.