• 1 Saint Petersburg Electrotechnical University ‘‘LETI”, Saint Petersburg, Russia
  • 2 Saint Petersburg State University, Saint Petersburg, Russia


A system of two-phase particles (Fe3O4 – Fe3-xTixO4) has been obtained using the sol-gel method followed by hydrothermal treatment. It is shown that the synthesis conditions favor forming composites that contain titanomagnetite in very low concentration. A theoretical analysis of the magnetic properties of system was performed using the model of clusters consisting of magnetostatically interacting particles. The theoretical value of the saturation magnetization and the experimental values of the coercive force can be explained by the presence of two different magnetic phases.



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