Magnetostrictive rare earth iron alloys

Bouchilloux, R Dynamic Shear Characterization in a Magnetostrictive Rare Earth-Iron Alloy. M.R.S. Symp. Proc., Vol. 360 (1994), pp. 265-272... 

Lhermet, N. Actuators based on biased magnetostrictive rare earth-iron alloys. Proc. Actuator 92, Axon, Bremen, Germany (1992), pp. 133-137... 

Several new giant magnetostrictive materials have been developed in recent years for actuation applications. Bulk rare-earth-iron alloys Terfenol-D present typical static magnetostrains of 1000... 2000 ppm, which permit the building of low-frequency actuators and transducers. New composite materials offer an interesting possibility for high frequency ultrasonic applications. More recently, rare-earth-iron thin films have been also explored for actuation in microsystems. 

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