Abstract
The dielectric properties of synthesized composites, consisting of two components (the multiferroic SrFe[Formula: see text]O[Formula: see text] and the ferroelectric BaTiO
3
), exhibiting combined magnetic and ferroelectric properties, have been investigated. A phase transition is shown to occur at Tc [Formula: see text] 135
∘
C, the degree of broadening of which increases with increasing concentration of strontium hexaferrite. For composites with barium titanate concentrations of [Formula: see text]75 and 80%, the greatest microwave energy absorption of a resonant type was observed, reaching 25–30 dB at spectral maxima. It was revealed that the frequency of the absorption spectrum’s maximum can be manipulated through variations in sample temperature, uniaxial pressure, and the induction of a constant magnetic field. The largest frequency shift of the energy absorption peak (a decrease of 1.8[Formula: see text]GHz or ∼22%) is observed when the temperature is increased from 80
∘
C to 160
∘
C. The features of absorption spectra of composites are interpreted from the point of view of the resonance behavior of elements of the domain structure of ferroelectrics and multiferroics in an electromagnetic field.