Switching Field Distributions and Magnetocrystalline Anisotropy Fields in Zn-Ti and Co-Ti Equally Co-Substituted BaM Ferrites

M-type hexagonal barium ferrites Ba(MxTix)Fe
12−2x
O
19
(M=Co or Ti, x=0-0.5) are synthesized by chemical route. Experimental values of the anisotropy fields HK are extracted from microwave measurements. It is shown that HK values are very close to the higher switching field. Results show that the shift through lower values both for HK and the switching field distributions are the largest for CoTi substitutions. A qualitative analysis based on the cations occupation sites is proposed.