This invention comprises a method of increasing the magnetostrictive response of rare earth iron (RFe) magnetostrictive alloy rods by a thermal-magnetic treatment. The rod is heated to a temperature above its Curie temperature, viz. from 400 rod is at that temperature, a magnetic field is directionally applied and maintained while the rod is cooled, at least below its Curie temperature.
Iowa State University Research Foundation, Inc.
Verhoeven, John D.; McMasters, O. Dale; Gibson, Edwin D.; Ostenson, Jerome E.; and Finnemore, Douglas K., "Method of increasing magnetostrictive response of rare earth-iron alloy rods" (1989). Iowa State University Patents. 98.