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模拟磁电复合材料在广泛的频率范围

Mirza Bichurin¹, Oleg Sokolov¹, Sergey Ivanov¹

¹Institute of Electronic and Information Systems, Yaroslav-the-Wise Novgorod State University, ul. B. St. Petersburgskaya, 41, 173003 Velikiy Novgorod, Russia.

Materials (Basel, Switzerland)

|September 9, 2023

概括

本研究详细介绍了低频和高频的复合材料中的磁电 (ME) 效应. 研究人员开发了一个一般理论,并通过对分层结构和微波应用的实验数据进行验证.

科学领域:

材料科学与工程材料科学与工程
凝聚物质物理学凝聚物质物理学
电磁主义电磁主义

背景情况:

磁电 (ME) 效应对于多铁材料至关重要,它可以通过电场控制磁性质,反之亦然.
了解复合材料中的ME效应对于开发先进的传感器,执行器和存储器件至关重要.
现有的理论往往侧重于准静态条件,使得高频和共振行为的探索较少.

研究的目的:

为复合材料中磁电 (ME) 效应提出一个全面的一般理论.
在低频和高频两种模式中研究ME效应,特别关注机电共振.
为ME电压系数提供分析表达式,并将其与实验结果进行比较.

主要方法:

在复合结构中开发ME效应的一般理论框架.
详细分析机电共振模式 (纵向,曲,剪切,扭曲).
在分层复合材料 (例如,GaAs/Metglas,LiNbO3/Metglas) 中的ME电压系数的分析计算.
使用铁磁材料和各种压电材料研究微波ME效应.
应用有限元建模 (FEM) 用于模拟和与分析方法进行比较.

主要成果:

该理论准确地预测了对称和不对称的分层结构的ME电压系数.
对GaAs/Metglas和LiNbO3/Metglas复合材料的实验结果与理论预测有很好的一致性.
微波ME效应,观察到铁磁共振 (FMR) 电场下的线移,分析了各种材料组合.
有限元建模为分析计算提供了一个补充的方法,验证了提出的方法.

结论:

提出的一般理论为理解复合材料中ME效应在广泛频率范围内提供了强大的框架.
该研究强调了机电共振在增强ME合方面的重要性.
这些发现适用于在各种频率,包括微波模式下运行的先进磁电设备的设计和优化.

关键词:

电机电磁共振是一种电机电磁共振.铁磁金属是一种铁磁性金属.铁磁共振线的偏移是铁磁共振线的偏移.磁电复合材料是一种电磁复合材料.磁电效应是一种磁电效应.磁电电压系数的电压系数这是一种压电式电体.响应模式的共振模式基板效应对基板产生影响.

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