Abstract
Multiferroic composite samples (1 − x) Bi0.9Pr0.1FeO3–xNi0.5Co0.5Fe2O4 for x = 0, 0.1, 0.2, 0.3, and 1.0 were synthesized by sol-gel auto-combustion method. Detailed investigations were made on the structural, magnetic, and electrical properties of these composites. The X-ray diffraction (XRD) patterns confirm the co-existence of perovskite BPFO and spinel ferrite NCFO without any impurity phase. The average particle size of BPFO and NCFO nanoparticles is nearly equal to 110 nm and 35 nm respectively which are confirmed by XRD and transmission electron microscopy (TEM) analysis. Structural and surface morphology are studied by scanning electron microscopy (SEM). The dielectric properties of the composites are also studied at room temperature. The saturation and remnant magnetization are found to increase with increase in NCFO weight percentage in the composites. The saturation magnetization (Ms) values are 3.38 emu/g, 8.65 emu/g, and 13.87 emu/g and coercivity (Hc) values are 936.52 Oe, 1058.12 Oe, and 1046.77 Oe for BPFO-NCFO 1, 2, and 3 composite samples respectively. The incorporation of BPFO and NCFO enhances the multiferroic properties in the present composite materials which are quite promising for applications point of view.
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