Abstract
Magnetoelectric nanocomposites (1−x)BiFeO3-xAFe2O4 (A = Zn, Ni, Mn), x = 0.3 have been prepared using citrate sol-gel precursor method and investigated to understand the effect of spinel ferrites on magnetoelectric coupling properties of BiFeO3. The X-ray diffraction (XRD) analysis confirms the formation of di-phase compounds having rhombohedral perovskite and spinel phase for BiFeO3 and ZnFe2O4, NiFe2O4, MnFe2O4, respectively. Field Emission Scanning Electron Microscopy (FESEM) study shows the agglomerated granular particle shape in the samples. Energy Dispersive X-ray Atomic Spectroscopy (EDAX) was used to find the elemental composition of the nanocomposites. The frequency dependence of dielectric properties at room temperature has been investigated. The perovskite-spinel composite system modified the dielectric behaviour of BiFeO3. Furthermore, the linear magnetoelectric coupling coefficient study gives the strong coupling effect in BiFeO3. The study shows that the spinel ferrites bring significant changes in the magnetoelectric coupling coefficient of BiFeO3, which is useful for technological applications.
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