Magnetic characteristics of a nanocomposite based on bismuth ferrites

The magnetization processes of the BiFeO$_3$–Bi$_{2}$Fe$_{4}$O$_{9}$ nanocomposite obtained by glycine nitrate combustion were studied. It was shown that the magnetic characteristics of the pure BiFeO$_{3}$ and Bi$_{2}$Fe$_{4}$O$_{9}$ compounds and the composite are significantly different. New properties of the synthesized substance are associated with the presence of exchange interaction at the interfaces.