在分层异构结构中的低频共振磁电效应 抗铁磁 - 压电效应
Dmitri A Burdin1, Dmitri V Chashin1, Nikolai A Ekonomov1
1MIREA-Russian Technological University, Moscow 119454, Russia.
Sensors (Basel, Switzerland)
|July 14, 2023
概括
本研究探讨了用于磁场传感的基于血的异构结构中的磁电效应. 研究人员观察到磁场诱导的声音共振频率和电压生成的显著调整.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 磁电 (ME) 传感器利用铁磁-零电异构中的ME效应将磁场转换为电压.
- 传感器的性能受到磁性材料的特性显著的影响.
- 黑马 (α-Fe2O3) 是一种抗铁磁材料,具有低频ME应用的潜力.
研究的目的:
- 在具有血 (α-Fe2O3) 和压电层的异构结构中研究低频磁电效应.
- 分析机械合,磁压和压电对ME效应的影响.
- 描述这些异构结构中磁场诱导的声学共振调和.
主要方法:
- 用血和压电层 (压聚合物和压陶) 制造平面异构结构.
- 在血晶体中测量磁化和磁阻的磁场依赖性.
- 在制造结构中研究共振ME效应和电压波生成.
主要成果:
- 黑石在磁性和声学子系统之间的强合使磁场能够调整声学共振频率 (黑石层约为37%).
- 血-PVDF异构结构显示 ~24%的频率调整和ME系数为58mV/{Oe·cm}.
- 黑石-皮耶佐陶的异构结构表现出~4.4%的频率调,ME系数为4.8V/{Oe∙cm},以及高效的第二电压波生成.
结论:
- 基于血的异构结构显示出磁场传感应用的巨大潜力.
- 观察到的磁场诱导的声学共振调突出了这些材料中强大的磁电合.
- 对化石-钢陶异构结构的进一步研究可能会导致具有波生成能力的先进磁场传感器.
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