Ceramics and Composite Materials

Biography

Biography: Rashmi Rani

Abstract

Multiferroic BCT-ZF ceramics were prepared from ferromagnetic (FM) zinc ferrite (ZF) and ferroelectric (FE) barium calcium titanate (BCT) with different mole % age of x, ((1-x) BaO.96CaO.O4TiO3–(x) ZnFe2O4) by using solid state reaction method. The preliminary structural studies were carried out by using x-ray diffraction technique, which confirm that the samples have a tetragonal structure along with the cubic spinel ferrite phase at room temperature with the average crystallite size of 22-32 nm. Raman spectra of these composites also confirm the existence of BCT phase and ZF phase respectively. Room temperature ferroelectric characterizations have shown that the samples are ferroelectric along with an adequate magneto electric coupling of 10.85 mV/(cm.Oe). The strong dependence of electric parameters on applied magnetic DC bias fields provides a framework for the development of potential magneto electric devices. Also, the high sensitivity of magneto electric coupling to the applied AC magnetic field can be used for its application in magneto electric sensors.