Multiferroics have been formally defined as materials that exhibit more than one primary ferroic order parameter simultaneously (i.e. in a single phase), and many researchers in the field consider materials to be multiferroics only if they exhibit coupling between primary order parameters.However, the definition of multiferroics can be expanded to include non-primary order parameters, such as antiferromagnetism or ferrimagnetism.
Magnetoelectric (ME) multiferroicity with coupled ferroelectric and magnetic orders has received much attention because of its great potential for numerous applications.
- Discovery of new materials of multiferroics with strong magnetoelectric effects;
- Understanding of the physical mechanisms underlying various multiferroic and magnetoelectric phenomena;
- Implementation of electronic and spintronic devices based on magnetoelectric effects;
- Development of experimental techniques for measuring magnetoelectric effects.