ADVANCES IN MULTIFIELD COUPLED EXPERIMENTS RESEARCH OF ELECTROMAGNETIC FUNCTIONAL MATERIALS

This paper will review the multi-physical fields coupled properties measurement technology and device for electromagnetic functional materials. It will be introduced how to measure the physical and mechanical properties including electric/magnetic hysteresis, butterfly curve, electrostriction/magnetostriction, stress-strain curve and magnetoelectric effect and so on under muti-physical fields coupled conditions. Then, new phenomena under under muti-physical fields coupled conditions for electromangetic functional materials will be described, which include electric hysteresis under the multi-axial electric field and biaxial mechanical loading, domain switch rule in crack tip, magnetic-induced pseudoelasticity, magnetostriction ``drop'' and so on. It has improtant meaning for understanding the deformation and fracture mechanism under coupled field for electromagnetic functional material and structure.