Journal
PHYSICS OF METALS AND METALLOGRAPHY
Volume 124, Issue 1, Pages 46-52Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0031918X22601779
Keywords
composites; non-stoichiometric magnetite; micromagnetic modeling; two-phase particles; magnetostatic interaction; superparamagnetism; effective spontaneous magnetization
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The magnetic properties of Fe3O4-Fe3-xTixO4 composites synthesized by various methods were simulated using an ensemble of magnetostatically interacting particles model. The results are consistent with the hysteresis characteristics obtained previously from the model of chemically heterogeneous two-phase particles. It is demonstrated that this approach is suitable for samples mainly composed of superparamagnetic particles, where the saturation remanent magnetization is provided by the particles blocked due to magnetostatic interaction.
The magnetic properties of Fe3O4-Fe3-xTixO4 composites synthesized by various methods were simulated based on the model of an ensemble of magnetostatically interacting particles. The results are in good agreement with the hysteresis characteristics of the samples calculated earlier in the framework of the model of chemically heterogeneous two-phase particles. It is shown that the used approach is also applicable to the samples consisting mainly of superparamagnetic particles in which the saturation remanent magnetization is provided by the particles blocked due to the magnetostatic interaction.
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