Magnetoelectric phenomena of insulator polymers after corona poling: Procedure and experiments

• Published in: Sensors and actuators. A. Physical. Vol. 220; pp. 112 - 117
• Main Authors: Zhang, J.W., Belouadah, R., Lebrun, L., Guyomar, D.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2014; Elsevier
• Subjects: Cellular; Cellular polypropylene; Charge; Corona triode; Coronas; Decay; Deoxidizing; Electrets; Engineering Sciences; Faraday and Lenz effect; High voltages; Magnetoelectric response; Polypropylenes; Polyvinyl chloride; Polyvinyl chlorides; Faraday and Lenz effect; Polyvinyl chloride; Corona triode; Cellular polypropylene; Magnetoelectric response; Polyvinyl chlorides; Corona poling
• ISSN: 0924-4247; 1873-3069
• DOI: 10.1016/j.sna.2014.09.021

•The originality of this paper is to compare different surface potential decay tendency and charge storage ability of two different electrets and explore their ME performances after corona poling.•This study discovers for the first time that their magnetoelectric current can be increased after corona discharge.•For both electrets, the bias magnetic field and frequency dependences of the magnetically induced current revealed that it has an inductive origin via Lenz and Faraday Laws, as well as magnetoelectric effect. In this paper, cellular polypropylene (PP) and polyvinyl chloride (PVC) films have been negatively charged via a high voltage corona triode. In order to evaluate the ability of space charge retention in both dielectric materials, their decay tendencies of the surface potential after corona discharge have been analyzed and compared. Moreover, the magnetoelectric responses of cellular PP and PVC between, before and after corona discharge have also been discussed for the first time in this work. It indicates that cellular PP possesses better charge storage ability than PVC and their magnetoelectric coefficient and current can be increased after corona poling. For both electrets, the bias magnetic field and frequency dependences of the magnetically induced current revealed that it has an inductive origin via Lenz and Faraday Laws, as well as magnetoelectric effect.