Sub‐Nanosecond Reconfiguration of Ferroelectric Domains in Bismuth Ferrite
- X‐ray Science Division Argonne National Laboratory Lemont IL 60439 USA
- Materials Research Institute The Pennsylvania State University University Park PA 16801 USA, School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China
- Department of Physics National Cheng Kung University Tainan 70101 Taiwan, Center for Quantum Frontiers of Research &, Technology (QFort) National Cheng Kung University Tainan 70101 Taiwan
- Stanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
- Nanoscience Science and Technology Division Argonne National Laboratory Lemont IL 60439 USA
- X‐ray Science Division Argonne National Laboratory Lemont IL 60439 USA, Materials Science Division Argonne National Laboratory Lemont IL 60439 USA
- Materials Research Institute The Pennsylvania State University University Park PA 16801 USA
- Stanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park CA 94025 USA, Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA, Department of Photon Science Stanford University and SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
Abstract Domain switching is crucial for achieving desired functions in ferroic materials that are used in various applications. Fast control of domains at sub‐nanosecond timescales remains a challenge despite its potential for high‐speed operation in random‐access memories, photonic, and nanoelectronic devices. Here, ultrafast laser excitation is shown to transiently melt and reconfigure ferroelectric stripe domains in multiferroic bismuth ferrite on a timescale faster than 100 picoseconds. This dynamic behavior is visualized by picosecond‐ and nanometer‐resolved X‐ray diffraction and time‐resolved X‐ray diffuse scattering. The disordering of stripe domains is attributed to the screening of depolarization fields by photogenerated carriers resulting in the formation of charged domain walls, as supported by phase‐field simulations. Furthermore, the recovery of disordered domains exhibits subdiffusive growth on nanosecond timescales, with a non‐equilibrium domain velocity reaching up to 10 m s −1 . These findings present a new approach to image and manipulate ferroelectric domains on sub‐nanosecond timescales, which can be further extended into other complex photoferroic systems to modulate their electronic, optical, and magnetic properties beyond gigahertz frequencies. This approach could pave the way for high‐speed ferroelectric data storage and computing, and, more broadly, defines new approaches for visualizing the non‐equilibrium dynamics of heterogeneous and disordered materials.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- Grant/Contract Number:
- AC02-76SF00515; AC02-06CH11357; SC-002014; SC-0012375
- OSTI ID:
- 2007551
- Alternate ID(s):
- OSTI ID: 2007552; OSTI ID: 2308794
- Journal Information:
- Advanced Materials, Journal Name: Advanced Materials Vol. 35 Journal Issue: 44; ISSN 0935-9648
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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