Poster Virtual Only
02 Nov 2023
Multiferroic magnetoelectric (ME) coupling between the magnetostrictive and piezoelectric constituents has superior ME properties and shows promising potential for practical applications such as sensors, transducers, energy harvesters, etc [1-3]. More attention was focused on improving the ME coupling by utilizing different piezoelectric constituents with superior properties [3-4]. The ME coupling can also be enhanced by improving the magnetostrictive materials. Compared to the brittle of Terfenol-D, Galfenol (Fe-Ga) exhibits a combination of high mechanical strength and good ductility, allowing it to be used in harsh and shock-prone environments [5,6]. However, the larger ME output was limited by its low magnetostrictive coefficient. In this study, the laminate composites of the ME sandwich structure device were fabricated using a PZT piezoelectric ceramic plate polarized along the thickness direction sandwiched between two Fe-Ga thin sheets prepared by conventional rolling and annealing methods. Goss-oriented and random-textured Fe-Ga thin sheets were prepared to reveal the effect of texture and magnetostriction coefficient on the ME coupling. The ME laminate with Goss-oriented Fe-Ga sheet and magnetostrictive coefficient of 244 ppm exhibits much higher ME coefficients (73.11 V/cm●Oe) than those of ME laminate (16.17 V/cm●Oe) with random-textured Fe-Ga sheet and magnetostrictive coefficient of 64 ppm. Meanwhile, higher ME coefficients can be obtained in a low resonance frequency (26.4 Hz) and excitation magnetic field (26 Gs).References: [1]H. Liu, J. Wang and H. Wang, International Journal of Precision Engineering and Manufacturing., Vol. 18, p. 1605-1614 (2016). [2]H. Palneedi, S. Na and G. Hwang, Journal of Alloys and Compounds., Vol. 765, p. 764-770 (2018). [3]V. Annapureddy, S. Na and G. Hwang, Energy & Environmental Science., Vol. 11, p. 818-829 (2018). [4]F. Li, X. Zhang and T. Wu, Sensors and Actuators A: Physical., Vol. 349, p. 114020 (2023). [5]A. Clark, J. Restor and M. Wun-Fogle, IEEE Transactions on Magnetics., Vol. 36, p. 3238–3240 (2000). [6]J. Domann, C. Loeffler and B. Martin, Journal of Applied Physics., Vol. 118, p. 123904 (2018).
