Low-Frequency Resonant Magnetoelectric Effect in a Piezopolymer-Magnetoactive Elastomer Layered Structure at Different Magnetization Geometries

• Published in: Polymers 2024-04, Vol.16 (7), p.928
• Main Authors: Savelev, Dmitrii V, Burdin, Dmitri A, Fetisov, Leonid Y, Fetisov, Yuri K, Perov, Nikolai S, Makarova, Liudmila A
• Format: Article
• Language: English
• Subjects: Comparative analysis; Configurations; Deformation; Elastomers; Electric fields; Electric power production; Energy conversion; Energy harvesting; Magnetic fields; Magnetization; Multiferroic materials; Polymers; Sensors; Silicones
• ISSN: 2073-4360; 2073-4360
• DOI: 10.3390/polym16070928

The search for novel materials with enhanced characteristics for the advancement of flexible electronic devices and energy harvesting devices is currently a significant concern. Multiferroics are a prominent example of energy conversion materials. The magnetoelectric conversion in a flexible composite based on a piezopolymer layer and a magnetic elastomer layer was investigated. The study focused on investigating the dynamic magnetoelectric effect in various configurations of external alternating and constant homogeneous magnetic fields (L-T and T-T configurations). The T-T geometry exhibited a two orders of magnitude higher coefficient of the magnetoelectric effect compared to the L-T geometry. Mechanisms of structure bending in both geometries were proposed and discussed. A theory was put forward to explain the change in the resonance frequency in a uniform external field. A giant value of frequency tuning in a magnetic field of up to 362% was demonstrated; one of the highest values of the magnetoelectric effect yet recorded in polymer multiferroics was observed, reaching up to 134.3 V/(Oe∙cm).