Magnetic states of two-phase synthesized Fe$_{m}$O$_{n}$–Fe$_{3-x}$Ti$_{x}$O$_{4}$ particles: experimental and theoretical analysis

Composites Fe$_{m}$O$_{n}$–Fe$_{3-x}$Ti$_{x}$O$_{4}$ have been synthesized using the sol–gel method and hydrothermal treatment. The conditions chosen for the synthesis favor the formation of composites containing titanomagnetite in a relatively low concentration. The theoretical analysis of the magnetic properties of the composites is performed based on the hysteresis curves and the temperature dependences of the remanent magnetization using the cluster model of magnetostatically interacting two-phase particles.