超磁歪材料の材料開発と応用の動向

概要

論文の詳細を見る
A giant magnetostrictive material (GMM) whose saturated magnetostriction is 1000 ppm or more at room temperature was reported in the 1970s. This material, Terfenol-D, was commercialized late in the 1980s, and many applications have been since been reported. The first part of this paper describes the fundamental characteristic of GMMs and surveys recent trends in the development of the materials and examples of their applications. Next, the types and characteristics of thin-film materials such as SmFe thin films and both multilayer and single-layer films of TbFe are described as concrete examples of material development. The application examples are mainly bulk materials. Finally, as examples of successful applications, the paper introduces actuators such as a vibrator and a brake using GMM, and sensors such as a force sensor and a torque sensor.
社団法人日本磁気学会の論文
2001-08-01