Temperature Response of Magnetostrictive/Piezoelectric Polymer Magnetoelectric Laminates

Abstract:

Magnetostrictive/piezoelectric hybrid composites have recently attracted renewed interest as high sensitivity sensors and actuators. One of the most common used geometry consists in laminated amorphous magetostrictive metal/piezoelectric layers, and the maximum magnetoelectric effect has been found at the electromechanical resonance of the system. Here we present results concerning the fabrication of such laminate composites sensor by using Vitrovac 4040^® (Fe₃₉Ni₃₉Mo₄Si₆B₁₂) as the magnetostrictive amorphous component and two different piezoelectric polymers: poly (vinylidene fluoride) (PVDF) and 2,6(β-CN)APB/ODPA (poli 2,6) polyimide, a new high temperature piezoelectric polymer. We have measured room temperature induced magnetoelectric voltages of 79.6 and 0.35 V/cm.Oe at the magnetoelastic resonance of the laminate when using PVDF and poli 2,6 polyimide as piezoelectric components. We have also tested the magnetoelectric response of both laminated composites at temperatures up to 85 °C, and we have observed that the PVDF polymer piezoelectric response quickly decays. Even if the induced magnetoelectric voltage is low, we discuss the advantage of using new piezoelectric polymers due to their good performance at high temperatures, up to 200 °C, making these laminate composites suitable for high temperature applications.

• Periodical: Key Engineering Materials (Volume 495)
• Pages: 351-354
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.495.351
• Online since: November 2011
• Authors: Jon Gutiérrez, Andoni Lasheras, Jose Manuel Barandiaran, Jose Luis Vilas, María San Sebastián, Luis Manuel León
• Keywords: Magnetoelectric Response, Magnetostrictive/Piezoelectric Polymer Composite, Temperature Dependence of the Magnetoelectric Response

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DOI: 10.1002/pola.23183

[10] J. Gutiérrez, J.M. Barandiarán, A. Lasheras, J.L. Vilas, M. San Sebastián and L.M. León, accepted for publication in the Proceedings of the 8th European Conference on Magnetic Sensors & Applications, EMSA 2010, Bodrum, Turkey.