Neutron Scattering Study of Novel Relationship between Magnetism and Dielectricity

Abstract

The origin of multiferroics in the proper-screw magnetic structure, the superparamagnetism in relaxor ferroelectrics with the magnetic ions, and the magnetic anisotropy induced by the spin-nematic interaction were studied mainly by using the neutron scattering method by focusing on the relationship between the magnetism and the dielectricity. In these studies, a novel coupling between the magnetism and dielectricity, which is different from that in the typical multiferroics with the cycloidal magnetic structure, was discovered. Our new finding will open the door to a novel magnetoelectric effect.