Study of Magnetoelectric Properties of Composites Based on Magnetic Particles of Fe2O3 and Bentonite Using Percolation Theory

The paper presents the results from studies of the electrical and magnetic properties of an inhomogeneous percolated medium based on the theory of percolation. The application of this theory has a wide and varied range. Examples include hopping conductivity in semiconductors, properties of porous ma...

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Bibliographic Details
Published in:Surface engineering and applied electrochemistry 2023-06, Vol.59 (3), p.314-320
Main Author: Imanova, S. R.
Format: Article
Language:English
Subjects:
Bentonite
Clusters
Electrical resistivity
Engineering
Ferromagnetism
Hopping conduction
Machines
Magnetic properties
Manufacturing
Particulate composites
Percolation theory
Porous materials
Processes
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Summary:The paper presents the results from studies of the electrical and magnetic properties of an inhomogeneous percolated medium based on the theory of percolation. The application of this theory has a wide and varied range. Examples include hopping conductivity in semiconductors, properties of porous materials, etc. It was found that, with approaching the percolation threshold p c = 0.35, the resistivity decreases, and the electrical conductivity increases accordingly. An increasing number of individual ferromagnetic nanogranules in ( p )–Fe 2 O 3 –(1– p ) (MBT) composites merge with the formation of individual Fe 2 O 3 clusters in the bentonite matrix, which combine to form a continuous network of clusters. This is due to the fact that the resistivity ρ of the composite is mainly determined by the magnetic component of the latter.
ISSN:1068-3755
1934-8002
DOI:10.3103/S1068375523030092