Frequency dependence of the magnetoelectric effect in ceramic composites based on lead zirconate titanate and nickel ferrite

Abstract

The magnetoelectric (ME) effect in ferrite-piezoelectric ceramic composites based on a nickel ferrite spinel and lead zirconate titanate (PZT) has been theoretically and experimentally studied. Using the method of effective medium, an expression for the ME coefficient is obtained and its frequency dependence is analyzed. It is shown that, in the region of electromechanical resonance, the magnitude of the ME effect exceeds that in a layered structure of the same components and is more than two orders of magnitude greater than the low-frequency value. The results of calculations for a nickel ferrite spinel-PZT composite are in good agreement with the experimental data.