CHARACTERIZATION OF BAFE12-2XSCOXZRXO19 LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.5) SYNTHESIZED BY CITRATE GEL PRECURSOR ROUTE

The properties of Co-Zr substituted barium hexaferrite, synthesized by a citrate gel route, have been studied and optimized for recording me dia. The large variation in coercivity and other magnetic properties h as been examined in the light of reduction in anisotropy, variation in particle size and plausible distribution of cations on the five magne tic sublattices. Mossbauer spectroscopy suggests the presence of super paramagnetic particles in samples heated at 1170 K. These studies also suggest that substitutions in Co-Zr system are different from those i n similar systems such as Co-Ti substituted hexaferrites.