Crystal structure, dielectric and magnetic properties of BaTiO3-CoFe2O4 multiferroic composites

Multiferroics composites (BaTiO3)x-(CoFe2O4)1-x (x=0.00 and 0.10) were synthesized via solid-state reaction. Structural properties of the samples were studied by using X-ray diffraction technique at room temperature. XRD patterns confirmed the existence of tetragonal phase with P4mm space group for BaTiO3 and cubic phase with Fd3m space group for CoFe2O4, respectively. By using Rietveld refinement of XRD data verified that both phases are present without any secondary peak. The variation of tangent loss (tanδ) and dielectric constant (eʹ) was studied as a function of frequency in the range of 100Hz to 7MHz at room temperature. The dispersive behavior of both eʹ and tanδ show at lower frequency region but at higher frequency region it remains constant. M-H loop was measured at room temperature that shows the magnetic behavior of composites.