Barium ferrites substituted Co,Ti,Mn, produced by the citrate method h
ave been studied. The substitution x in BaCoxTixMnyFe12-2x-yO19 has be
en varied from 0.2 - 2.0 i./f.u. and the substitution of Mn y-0.1 i./f
.u.. Magnetic parameters were measured by the vibration magnetometer.
The mechanism of hexagonal structure formation has been checked by Mos
sbauer spectroscopy.