Abstract
Giant magnetstrictive materials (GMM), as being called lanthanoid-iron compounds, changes their permeability extremely when the externaly stressed. This alternation of the permeability is fundamentally coincident to the displacement that resulted from the varied crystal lattice of GMM element by the external stress. On the other hand, the relation between external stress and permeability which caused the alternation of internal magnetization being existence histeresis due to the ΔE effects. The purpose of this study is to ascertain the static characteristic and develop a telecommunication system using GMM pressure sensor.
