研究方向:
聚集于新型磁性微波材料及器件的开发和应用。磁性微波元器件是基于磁性铁氧体材料的旋磁性质,电磁波在其中传播表现出如法拉第旋转效应、铁磁共振和磁化率张量特性,可以作为隔离器、环行器、相移器、滤波器、振荡器等,在军事应用(雷达、电子对抗和军事通信)、商用雷达(无人驾驶、气象卫星雷达)和无线通信(5、6G通信、卫星通信)等方面有广泛的应用,是微波系统中的核心元器件,具有不可替代性优势。随着电子装备系统朝着集成化和高频方向发展,同时基于目前磁性微波材料及器件研究现状和应用需求,研究主要集中在以下几个方向。
1. 拓宽微波器件频率至毫米波段(V,W频带)
2. 单片微波集成电路(MMIC)的工艺开发和集成(微波磁性器件与半导体器件的系统化集成)
3. 高频段微波测试平台搭建和维护
主要工作成果:
1.首次在立方钙钛矿LaMn3Cr4O12中发现磁电多铁性
2.在BiMn3Cr4O12中实现大的铁电极化和强的磁电耦合
3.高温高压条件下A位有序钙钛矿CdMn3Mn4O12高质量单晶生长
代表性论文
[1] L. Zhou, J. Dai, Y. Chai, H. Zhang, et al., M. Azuma, Z. Hu, Y. Sun, C. Jin, Y. Long, Realization of Large Electric Polarization and Strong Magnetoelectric Coupling in BiMn3Cr4O12. Adv. Mater. 29, 1703435 (2017). (Inside front cover article)
[2] X. Wang#, Y. Chai#, L. Zhou#, et al., Observation of Magnetoelectric Multiferroicity in a Cubic Perovskite System: LaMn3Cr4O12. Phys. Rev. Lett. 115, 087601 (2015).
[3] L. Zhou, X. Wang, H. M. Zhang, et al., High pressure synthesis and physical properties of multiferroic materials with multiply-ordered perovskite structure. Acta physica Sinica 67, 157505 (2018).
[4] L. Zhou, X. Wang, Z. H. Liu, et al., High-pressure single crystal growth and magnetoelectric properties of CdMn7O12. J. Phys.: Condens. Matter 35, 254001 (2023). (Front cover article)
[5] G. X. Liu, M. C. Pi, L. Zhou, et al., Physical realization of topological Roman surface by spin-induced ferroelectric polarization in cubic lattice. Nat. Commun 13, 2373 (2022).
专利
1. Youwen, Long, Long, Zhou, Yunyu, Yin; a method to prepare a novel magnetoelectric multiferroics BiMn3Cr4O12, 2017-1-18, China, ZL201510069601.2
2. Youwen, Long, Xiao Wang, Long, Zhou, Yunyu, Yin, a method to prepare ferroelectric storage unit, 2018-10-26, China, ZL201510068294.6