Crystal structure, physicochemical, and sensory properties of solid solutions Bi1−xLaxFe1−xCoxO3 (x = 0, 0.05, 0.1)

For the first time, the synthesis was carried out and the physicochemical properties of solid solutions based on the multiferroic BiFeO 3 were studied. It was found that the samples were characterized by a rhombohedrally distorted perovskite structure. It was shown that a slight isovalent substitution of Bi 3+ ions by La 3+ ions and Fe 3+ ions by Co 3+ ions in BiFeO 3 ( x ≤ 0.10) leads to an increase in the specific magnetization. This can be attributed to structural distortions and causes weak ferromagnetism to occur. The studied samples are p -type semiconductors and have good sensory properties even without catalysts. It was found that the maximum values of the S response were obtained at temperatures close to the ferromagnetic Curie temperature, the value of which is consistent with the studies of electrical properties.