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Extremely Fast Optical and Nonvolatile Control of Mixed‐Phase Multiferroic BiFeO 3 via Instantaneous Strain Perturbation
Author(s) -
Liou YiDe,
Ho ShengZhu,
Tzeng WenYen,
Liu YuChen,
Wu PingChun,
Zheng Junding,
Huang Rong,
Duan ChunGang,
Kuo ChangYang,
Luo ChihWei,
Chen YiChun,
Yang JanChi
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202007264
Subject(s) - multiferroics , materials science , spintronics , ultrashort pulse , nanoelectronics , optoelectronics , phase transition , bismuth ferrite , laser , strain engineering , phase (matter) , nanotechnology , optics , condensed matter physics , ferromagnetism , ferroelectricity , physics , quantum mechanics , silicon , dielectric
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 BiFeO 3 (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.