The peculiarities presented of the magnetization for BiFeO3 nanoclusters with approximately 50 nm in size. They synthesized under conditions of solution combustion. When synthesized, the magnetic response of nanoclusters differs drastically depending on the type of fuel. If for the case of tartaric acid, the magnetic behaviour of the material follows a model of non-interacting particles, a model of aggregated particles with amorphous or fractal magnetic shell suits the case of sucrose usage.