Abstract
Magnetoelectric composites, namely xNiFe 2O 4 + (1 − x)Ba 0.8Sr 0.2TiO 3 were prepared by standard double sintering ceramic method. The X-ray diffraction measurements were carried out to check the phase purity and to calculate the lattice constants. scanning electron microscopy (SEM) micrographs were taken to understand the microstructure of the samples. Dielectric property such as dielectric constant ( ε ′ ) was also studied as a function of frequency in the range 100 Hz–1 MHz. The ac conductivity as a function of frequency and dc resistivity as a function of temperature were studied for different compositions. The hysteresis measurements were done to determine saturation magnetization ( M s) and coersivity ( H c) and magnetic moment was calculated. Effect of resistivity on ME voltage coefficient is studied.
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