Abstract
We have been proposing a magnetic force control method using the inverse magnetostrictive effect of
magnetostrictive materials. With a parallel magnetic circuit consisting of iron yokes and permanent
magnet, the magnetic force exerting on the yoke varies with the mechanical stress applied to the
magnetostrictive material. The characteristics of the magnetic force, such as stress-sensitivity and range of
the variation, are mostly dependent on the material properties of the magnetostrictive material. In this
paper, we investigate the potential of the Galfenol, with high piezomagnetic constant and high saturation
on our proposing method. The comparison of the theoretical and experimental results of magnetic force
clarifies the advantages of the Galfenol.
