Nonlinear Magnetoelectric Response of Planar Ferromagnetic-Piezoelectric Structures to Sub-Millisecond Magnetic Pulses

Sensors

Florian Kreitmeier²  Dmitry V. Chashin³  Yury K. Fetisov³  Leonid Y. Fetisov¹  Irene Schulz²  Gareth J. Monkman² 

[1] Faculty of Physics, M.V. Lomonosov Moscow State University, GSP-1, 119991 Moscow, Russia; E-Mail:;Faculty of Electrical Engineering and Information Technology, Regensburg University of Applied Sciences, Seybothstr. 2, 93053 Regensburg, Germany; E-Mails:;Faculty of Electronics, Moscow State Technical University of Radio Engineering, Electronics and Automation, Prospekt Vernadskogo 78, 119454 Moscow, Russia; E-Mails:

关键词: composite materials;    magnetoelectric effect;    magnetostriction;    piezoelectricity;    magnetic field pulse;   

DOI  :  10.3390/s121114821

来源: mdpi

【 摘 要 】

The magnetoelectric response of bi- and symmetric trilayer composite structures to pulsed magnetic fields is experimentally investigated in detail. The structures comprise layers of commercially available piezoelectric (lead zirconate titanate) and magnetostrictive (permendur or nickel) materials. The magnetic-field pulses have the form of a half-wave sine function with duration of 450 μs and amplitudes ranging from 500 Oe to 38 kOe. The time dependence of the resulting voltage is presented and explained by theoretical estimations. Appearance of voltage oscillations with frequencies much larger than the reciprocal pulse length is observed for sufficiently large amplitudes (∼1–10 kOe) of the magnetic-field pulse. The origin of these oscillations is the excitation of bending and planar acoustic oscillations in the structures. Dependencies of the magnetoelectric voltage coefficient on the excitation frequency and the applied magnetic field are calculated by digital signal processing and compared with those obtained by the method of harmonic field modulation. The results are of interest for developing magnetoelectric sensors of pulsed magnetic fields as well as for rapid characterization of magnetoelectric composite structures.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.