TbFe2 film prepared by a flash evaporation system onto Si(100) or polyamide substrate have been irradiated with different Ar ion doses at zero, 1.3x10 and 2.7x10 ions/cm and at 10 kV. Magnetostrictive properties of TbFe2 film with disordered structure, saturated magnetostriction and magnetostrictive susceptibility, improved by Ar ion beam irradiation due to increasing of in-plane compressive st...

Aiming to the effect of hysteresis characteristics of giant magnetostrictive materials on the giant magnetostrictive actuator, the actuator’s model is divided into four separate segments. Then, based on the Preisach theory, a model which can describe hysteresis characteristics for the actuator is established. Based on this, feedforward is combined with feedback, and a PID closed-loop feedback c...