1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
2. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China
Abstract：The softening coefficient (S33) and the magnetic mechanical coupling coefficient (K33) of Fe-Ga alloy were determined by measuring the impedance frequency characteristics of Fe-Ga under different magnetic fields, which provides a design reference for the application of Fe-Ga alloys in systems such as actuators and transducers.The resonant frequency and the anti-resonant frequency of the rod-shaped sample and the flake sample under different magnetic fields were measured by constructing the measuring device.The calculation of S33 and K33 were carried out and the characteristic parameters of the flake sample and the rod sample were compared and analyzed.The results show that S33 and K33 of rod sample and the flake sample increase first and then decrease with the increase of the magnetic field.The softening coefficient of the flake sample is smaller than that of the rod sample, and the magnetic mechanical coupling coefficient is larger than that of the rod sample.
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2018, Vol. 39 
