基于高性能Metglas/PMNT的MPP结构磁电复合材料的交流极化研究

Study on Alternating Current Polarization of MPP Magnetoelectric Composite Based on High Performance Metglas/PMNT

近年来,基于高性能Metglas/PMNT的磁电复合材料的弱磁传感器受到广泛关注。随着磁电复合材料的深入研究,发现Multi-Push-pull磁电复合材料具有磁电系数高,内部噪声低等诸多优点,在弱磁场探测领域展现出巨大的应用前景。考虑到MPP结构的磁电复合材料的通常使用的是三方相的PMNT单晶和Metglas非晶合金,使用交流极化(ACP)方法改善MPP结构磁电复合材料的磁电响应。采用交流极化的方法来提升PMNT单晶的性能,通过探索不同的极化条件(包括极化温度、极化电压和极化频率)来提升MPP结构磁电复合材料的磁电系数,从而提升磁电传感器的弱磁探测能力。

In recent years,there has been widespread interest in weak magnetic sensors utilizing highperformance Metglas/PMNT magnetoelectric composite materials.Through extensive research on magnetoelectric composites,it has been discovered that Multi-Push-pull(MPP)magnetoelectric composites offer numerous advantages,such as high magnetoelectric coefficient and low internal noise,thereby demonstrating significant application prospects in weak magnetic field detection.Given that tripartite PMNT monocrystals and Metglas amorphous alloys are commonly used for MPP-structured magnetoelectric composites,this study employs the alternating current polarization(ACP)method to enhance the magnetoelectric(ME)response of MPP-structured ME composites.The paper focuses on utilizing the alternating current polarization method to enhance the performance of PMNT single crystals.Additionally,it thoroughly discusses poling conditions,including temperature,voltage and frequency of MPP structure magnetoelectric composites,aiming to improve the weak magnetic detection ability of magnetoelectric sensors.