Extremely Fast Optical and Nonvolatile Control of Mixed-Phase Multiferroic BiFeO3 via Instantaneous Strain Perturbation

Yi De Liou, Sheng Zhu Ho, Wen Yen Tzeng, Yu Chen Liu, Ping Chun Wu, Junding Zheng, Rong Huang, Chun Gang Duan, Chang Yang Kuo, Chih Wei Luo, Yi Chun Chen, Jan Chi Yang

Research output: Contribution to journalArticlepeer-review


Multiferroics—materials that exhibit coupled ferroic orders—are considered to be one of the most promising candidate material systems for next-generation spintronics, memory, low-power nanoelectronics and so on. To advance potential applications, approaches that lead to persistent and extremely fast functional property changes are in demand. Herein, it is revealed that the phase transition and the correlated ferroic orders in multiferroic BiFeO3 (BFO) can be modulated via illumination of single short/ultrashort light pulses. Heat transport simulations and ultrafast optical pump-probe spectroscopy reveal that the transient strain induced by light pulses plays a key role in determining the persistent final states. Having identified the diffusionless phase transformation features via scanning transmission electron microscopy, sequential laser pulse illumination is further demonstrated to perform large-area phase and domain manipulation in a deterministic way. The work contributes to all-optical and rapid nonvolatile control of multiferroicity, offering different routes while designing novel optoelectronics.

Original languageEnglish
Article number2007264
JournalAdvanced Materials
Issue number5
Publication statusPublished - 2021 Feb 4

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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