Cobalt-substituted barium monoferrite with the
formula BaCoxFe2-xO4 (x = 0.0 – 0.4, step 0.1) has been prepared
through the sol-gel autocombustion method. Phase purity for
prepared samples sintered at 700 and 1050 ̊C was analyzed by
X-ray diffraction (XRD) patterns that indicated the formation
of the typical orthorhombic phase for the samples. Fouriertransform
infrared (FTIR) spectroscopy was used to investigate
the effect of cobalt doping on the vibrational modes of the
studied samples. Scherrer and Williamson-Hall formulae were
used to define the microstrian and the crystallite size being in
the range of 44.1 to 59.7 nm, which was further confirmed with
transmission electron microscopy (TEM) images. Magnetic
characteristics including magnetic saturation and coercivity
were obtained from hysteresis loops traced using vibrating
sample magnetometry (VSM). Magnetic properties were
correlated with the composition of the prepared samples.
Finally, dielectric measurements were operated to further
confirm the structural and magnetic analysis.