Micro-structural, ferroelectric and magnetic properties of multiferroic composite system Ba_0.5Sr_0.5TiO₃- Ni_0.4Co_0.2Zn_0.4Fe₂O₄

ABSTRACT

In this paper, microstructural, ferroelectric and magnetic properties of multiferroic composite system (1-x) Ba_0.5Sr_0.5TiO₃ (BST) – (x) Ni_0.4Co_0.2Zn_0.4Fe₂O₄ (NCZF), where x = 0.1, 0.2, 0.3, 0.4 molar ratio have been studied. Grains of NCZF are larger in size and more symmetrical in comparison to BST grains. Overall grain size of BST grains in the composite samples decreases with increase in NCZF content. Polarization vs Electric Field (P-E) loops of the composite samples are unsaturated. The values of remanant polarization of the composite samples increase with increase in NCZF content. The composite samples possess saturated M-H loops with the values of remanant and saturation magnetization increases with increase in NCZF content.

KEYWORDS:

• Ferroelectric
• ferromagnetic
• magnetic