Deterministic optical control of room temperature multiferroicity in BiFeO3 thin films

Yi De Liou, Yu You Chiu, Ryan Thomas Hart, Chang Yang Kuo, Yen Lin Huang, Yuan Chih Wu, Rajesh V. Chopdekar, Heng Jui Liu, Arata Tanaka, Chien Te Chen, Chun Fu Chang, Liu Hao Tjeng, Ye Cao, Valanoor Nagarajan, Ying Hao Chu, Yi Chun Chen, Jan Chi Yang

研究成果: Article同行評審

75 引文 斯高帕斯(Scopus)


Controlling ferroic orders (ferroelectricity, ferromagnetism and ferroelasticity) by optical methods is a significant challenge due to the large mismatch in energy scales between the order parameter coupling strengths and the incident photons. Here, we demonstrate an approach to manipulate multiple ferroic orders in an epitaxial mixed-phase BiFeO3 thin film at ambient temperature via laser illumination. Phase-field simulations indicate that a light-driven flexoelectric effect allows the targeted formation of ordered domains. We also achieved precise sequential laser writing and erasure of different domain patterns, which demonstrates a deterministic optical control of multiferroicity at room temperature. As ferroic orders directly influence susceptibility and conductivity in complex materials, our results not only shed light on the optical control of multiple functionalities, but also suggest possible developments for optoelectronics and related applications.

頁(從 - 到)580-587
期刊Nature Materials
出版狀態Published - 2019 6月 1

All Science Journal Classification (ASJC) codes

  • 一般化學
  • 一般材料科學
  • 凝聚態物理學
  • 材料力學
  • 機械工業


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