Nanosecond Optically Induced Phase Transformation in Compressively Strained on
- Univ. of Wisconsin-Madison, Madison, WI (United States)
- Univ. of Science and Technology of China, Anhui (China)
- ID01/ESRF, Grenoble Cedex (France)
- Harbin Inst. of Technology, Shenzhen (China)
- Southern Univ. of Science and Technology, Guangdong (China)
- Argonne National Lab. (ANL), Argonne, IL (United States)
Above-band-gap optical illumination of compressively strained BiFeO3 induces a transient reversible transformation from a state of coexisting tilted tetragonal-like and rhombohedral-like phases to an untilted tetragonal-like phase. Time-resolved synchrotron x-ray diffraction reveals that the transformation is induced by an ultrafast optically induced lattice expansion that shifts the relative free energies of the tetragonal-like and rhombohedral-like phases. The transformation proceeds at interfaces between regions of the tetragonal-like phase and regions of a mixture of tilted phases, consistent with the motion of a phase boundary. The optically induced transformation demonstrates that there are new optically driven routes towards nanosecond-scale control of phase transformations in ferroelectrics and multiferroics.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); Harbin Institute of Technology; National Science Foundation of China; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Key Basic Research Program of China; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1558805
- Alternate ID(s):
- OSTI ID: 1545458
- Journal Information:
- Physical Review Letters, Vol. 123, Issue 4; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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