Behaviour of ferroelectric materials under the influence of magnetic field

The first theory of feroelectric was produced by Devonshire in 1949, and a new approach proposed 10 years later by Cochran, linking fereelectric phenomena to the theory of elasticity in crystals. However, the metro-scopic mechanism responsinle for spontaneous polarization still remain largely unknown. In this paper a new technique has been proposed to increase the local field and a mathematical model has been presented together with theoretical analysis.