Dielectric behaviour, complex impedance spectroscopy and magnetoelectric effect in MCFO-BT composites

Dielectric behaviors of Aurivillius Bi5Ti3Fe0.5Cr0.5O15 multiferroic polycrystals: Determining the intrinsic magnetoelectric responses by impedance spectroscopy

Bismuth layer ferroelectrics (BLFs) pioneered by Aurivillius about sixty years ago have been revived recently because of the fatigue- and lead-free behaviors and high Curie temperature, and especially the robust magnetoelectric (ME) effect. However, discerning the intrinsic ME nature, and the inherence between charged defect dipole induced relaxation and spin-related behaviors are still an ardu...

Resistivity, Thermoelectric Power and Magnetoelectric Effect in Ni0.7Co0.3Fe2O4 + Ba0.7Pb0.3TiO3 Composites

(y)Ni0.7Co0.3Fe2O4 + (1-y) Ba0.7Pb0.3TiO3 composites were prepared using ceramic method. The phase analysis was carried out by X-ray diffraction technique. It has confirmed that no impurity phase is present in the composites. The dc resistivity, thermo emf studied as a function of temperature. The value of static magnetoelectric conversion factor, i.e. dc (ME)H studied as a function of magnetic...

Magnetoelectric Multiferroic Composites

Magnetoelectric (ME) multiferroics are materials in which ferromagnetism and ferroelectricity occur simultaneously and coupling between the two is enabled. Applied magnetic field H gives rise to an induced polarization P which can be expressed in terms of magnetic field by the expression, P=┙H, where ┙ is the ME-susceptibility tensor. Most of the known single-phase ME materials are known to sho...

Simple model of the magnetoelectric effect in layered cylindrical composites

A simple model of the magnetoelectric (ME) effect in cylindrical layered composites is presented. The cylinder is replaced by the effective layered plate structure with effective length, Leff , thickness t and height h. In the axial coupling mode, the effective magnetic field acts along the length direction (Leff ). However, in the vertical coupling mode, the effective magnetic fields act in tw...

Magnetoelectric Effect in AIN/CoFE Bi-Layer Thin Film Composites