Electromechanical Coupling Factor of Magnetostrictive Materials and Magnetostrictive Characteristics of Glassy Alloy Sprayed Material

Abstract

We measured magnetization characteristics, magnetostrictive characteristics, modulus of elasticity when we applied compression stress to the magnetostriction materials such as glassy alloy sprayed sample. We calculated an electromechanical coupling factor from three numbers. The electromechanical coupling factor is used as a target for effective utilization of the energy. It is the ratio between input electrical energy and mechanical energy. In addition, we measured magnetostriction when we applied tensile stress by glassy alloy sprayed sample. And we checked whether there was one of what kind of difference in comparison with compression stress applied it.