BaFe12-2xCoxTixO19 (0 < x < 1) samples have been synthesized by four d
ifferent preparation methods: the so-called liquid mix technique, chem
ical coprecipitation, pyrosol method, and hydrothermal synthesis, The
optimum conditions for obtaining single phases with a particle size sm
aller than 1 mu m have been investigated, As a consequence of both the
synthetic procedure and the particle size, samples with coercivity va
rying from 5500 to 255 Oe have been obtained. (C) 1995 Academic Press,
Inc.