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Magneto–Electric–Optical Coupling in Multiferroic BiFeO3-Based Films
Advanced Materials ( IF 29.4 ) Pub Date : 2022-06-22 , DOI: 10.1002/adma.202106396
Wan-Rong Geng 1, 2 , Yun-Long Tang 3 , Yin-Lian Zhu 1, 3 , Yu-Jia Wang 3 , Bo Wu 1 , Li-Xin Yang 3 , Yan-Peng Feng 1, 2 , Min-Jie Zou 1, 2 , Tong-Tong Shi 3, 4 , Yi Cao 3, 4 , Xiu-Liang Ma 1, 2, 3
Affiliation  

Manipulating ferroic orders and realizing their coupling in multiferroics at room temperature are promising for designing future multifunctional devices. Single external stimulation has been extensively proved to demonstrate the ability of ferroelastic switching in multiferroic oxides, which is crucial to bridge the ferroelectricity and magnetism. However, it is still challenging to directly realize multi-field-driven magnetoelectric coupling in multiferroic oxides as potential multifunctional electrical devices. Here, novel magneto–electric–optical coupling in multiferroic BiFeO3-based thin films at room temperature mediated by deterministic ferroelastic switching using piezoresponse/magnetic force microscopy and aberration-corrected transmission electron microscopy are shown. Reversible photoinduced ferroelastic switching exhibiting magnetoelectric responses is confirmed in BiFeO3-based films, which works at flexible strain states. This work directly demonstrates room-temperature magneto–electric–optical coupling in multiferroic films, which provides a framework for designing potential multi-field-driven magnetoelectric devices such as energy conservation memories.

中文翻译:

多铁性 BiFeO3 基薄膜中的磁电光耦合

在室温下操纵铁素体阶并在多铁体中实现它们的耦合对于设计未来的多功能器件很有希望。单一外部刺激已被广泛证明可以证明多铁氧化物中的铁弹性转换能力,这对于桥接铁电和磁性至关重要。然而,作为潜在的多功能电子器件,在多铁氧化物中直接实现多场驱动的磁电耦合仍然具有挑战性。在这里,多铁性 BiFeO 3中的新型磁-电-光耦合显示了在室温下通过使用压电响应/磁力显微镜和像差校正的透射电子显微镜进行确定性铁弹性转换介导的基薄膜。在 BiFeO 3基薄膜中证实了表现出磁电响应的可逆光致铁弹性开关,该薄膜在柔性应变状态下工作。这项工作直接展示了多铁性薄膜中的室温磁电光耦合,为设计潜在的多场驱动磁电器件(如节能存储器)提供了框架。
更新日期:2022-06-22
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