Magnetostrictive rods formed from rare earth-iron alloys are subjected to a short time heat treatment to increase their Magnetostrictive response under compression. The heat treatment is preferably carried out at a temperature of from 900 hours.
Iowa State University Research Foundation, Inc.
Verhoeven, John D.; McMasters, O. D.; and Gibson, Edwin D., "Thermal treatment for increasing magnetostrictive response of rare earth-iron alloy rods" (1989). Iowa State University Patents. 99.