Investigation on Microstructural Properties and Magnetoelectric Coefficient of Mn Modified BiFeO₃ Based Solid Solutions

Abstract

(1-x)BiFe_0.75Mn_0.25O₃-(x)BaTiO₃ (x = 0.1, 0.2, 0.3) solid solutions have been prepared utilizing conventional solid state reaction route. Powder XRD study confirmed the structural evolution from rhombohedral to cubic phase with an incorporation of BaTiO₃ (BT). Further insight in to microstructure revealed structural bonding using FTIR spectra and reduced grain size and shape along with reduced porosity with an increasing BT content using SEM studies. Maximum polarization of 56 μC/cm² was observed for x = 0.3. The magnetoelectric coupling coefficient was obtained successfully by straight line fitting of induced polarization vs. magnetic field graph and was found to be 0.83124 μC/cm²/T.

Keywords:

• Multiferroic
• ferroelectric
• magnetoelectric coupling

Acknowledgments

The authors are thankful to the University Science Instrumentation Center (USIC), Delhi University and Central Instrumentation Facility (CIF), Jamia Millia Islamia for providing their characterization facilities.