Abstract
This paper examines the influence of powder surface area on the magnetoelectric properties of a ferrite + piezoelectric composite. The use of fine powders with a specific surface area in the range 3.1–7.6 m2/g improves the magnetoelectric parameters of bulk composites by 17 to 44% in comparison with a coarse powder with a specific surface area of 0.8 m2/g. This is due to the formation of a more homogeneous composite material, improvement of its dielectric properties, increase in contact area between phases, reduction in internal demagnetizing factor, and increase in the density of the material.
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