Process-structure-property correlation of (1 − x)CoFe2O4 + xBaTiO3 (x = 0.2, 0.5, 0.8) composites

Abstract

The (1 − x)CoFe2O4 + xBaTiO3 (x = 0.2, 0.5, 0.8) magnetoelectric (ME) composites were prepared by solid state method. The structural feature of as-prepared ceramics were characterized and studied systematically by using XRD, and Raman. The dielectric properties were measured by LCR Meter Bridge. Variation of dielectric properties (dielectric constant and dielectric loss) with frequency range of 1000 Hz–1 MHz were studied. The AC conductivity were calculated from dielectric constant (ε’) and loss tangent (tanδ). The conduction phenomenon was explained on the basis of small polaron hopping model. The composites show excellent ferroelectric properties. The morphological feature of the selected composites; fractured as well as thermally etched has been studied by scanning electron microscopy. The relationship between such properties, chemical composition and sintering temperatures are thoroughly discussed.