Magnetic field induced polarization and magnetoelectric effect of Ba0.8Ca0.2TiO3-Ni0.2Cu0.3Zn0.5Fe2O4 nanomultiferroic

Abstract

The xBa0.8Ca0.2TiO3-(1 − x)NiCuZn ferrite (x = 0.1, 0.3, 0.5, 0.7, and 0.9) nanocomposites were prepared by using sol-gel method. The densification of these composites was carried out using microwave sintering method. The magnetic field induced changes in the ferroelectric polarization loop may support the possible magnetoelectric coupling between Ba0.8Ca0.2TiO3 and NiCuZn ferrite phases. The observed change in ferroelectric polarization with applied magnetic field proves the coupling between magnetic and ferroelectric order parameters. The loop change is observed with the composition and with magnetic field. The magnetoelectric coefficient of the nanocomposite with x = 0.3 shows a value of 280 mV/cm Oe is obtained.

SBR/BiFeO3 Elastomer Capacitor Films Prepared under Magnetic and Electric Fields Displaying Magnetoelectric Coupling

“…This is likely an artifact related to the presence of leakage currents in the capacitor. 37 Therefore, the P−E plots shown in Figure 8a applying magnetic fields, were also observed by Sadhana et al 38 in a complex mixture of doped BaTiO 3 and ZnFe 2 O 4 nanocomposites. Yao et al have also found nonsaturated electric polarization curves for BiFeO 3 −BaTiO 3 bulk composites sintered under oxygen atmosphere, with similar values of resistivity as those reported in this paper.…”

Multiferroic Ni0.6Zn0.4Fe2O4-BaTiO3 nanostructures: Magnetoelectric coupling, dielectric, and fluorescence

“…5(a)]. These values of P r for both the samples of NZF/BT composite are given in Table I and shows improvement than reported work of BT based composites, 2,12,20,21 which are explained as: first; the surface defects by large value of surface to volume ratio of nanostructures. Second, the polycrystalline phase of BT is tetragonal.…”

“…These values of a E are given in Table I and show improvement than the reported work of BT based composites. 7,12,13,[24][25][26][27][28][29][30][31][32] Generally, the value of a E linearly increases to a maximum value and then deceases linearly to zero with varying H dc of applied magnetic field. But, in the present case of NZF/BT, the a E is nonlinearly varying and also observe stability at certain value of applied H dc magnetic field depends on two factors: first, the two-phase nanostructural composite coupled by interfacial strain where ME behavior is strongly dependent on their nanograins and the coupling interaction across the piezoelectric/magnetostrictive interface.…”

“…The MF composite of ferroelectric, BaTiO 3 (BT), and ferrites has been recently found to exhibit large ME response at room temperature and low magnetic field. 1,8,[10][11][12] The ME behavior is strongly dependent on their microstructure and coupling interaction across ferromagnetic-ferroelectric interface. Among various perovskite based MFs, the tetragonal phase of BT nanostructure rarely exists and resides stress near grain boundaries for enhancement of polarization.…”

Compositional-driven multiferroic and magnetoelectric properties of NdFeO3-PbTiO3 solid solutions

“…Due to coupling between magnetic and ferroelectric domains, the strain will induce stress thereby generating an electric field on the ferroelectric domains. As a consequence, the ferroelectric properties of the material get modified [26][27][28][29].…”