Giant magnetoelectricity in pyroelectric antiferromagnets and slow DW

Materials with strong magnetoelectric effect are of pressing interest for future spintronics and information storage devices. At the same time, ferromagnetic ferroelectrics are rather rare. Recently very large magnetoelectric effect was measured in AFM pyroelectric Ni3TeO6 at the spin flop transition. The effect will be rationalized using Landau theory and model Hamiltonians with parameters extracted from first-principles calculations. The second part of the talk will focus on slow electric field-driven dynamics of ferroelectric domain walls. Understanding this dynamics may be instrumental for efficient manipulation of domain walls in multiferroics.