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Title: Reversible switching between pressure-induced amorphization and thermal-driven recrystallization in VO2(B) nanosheets

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1354516
Report Number(s):
BNL-113033-2016-JA
Journal ID: ISSN 2041-1723
DOE Contract Number:
SC00112704
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nature Communications; Journal Volume: 7
Country of Publication:
United States
Language:
English

Citation Formats

Wang, Yonggang, Zhu, Jinlong, Yang, Wenge, Wen, Ting, Pravica, Michael, Liu, Zhenxian, Hou, Mingqiang, Fei, Yingwei, Kang, Lei, Lin, Zheshuai, Jin, Changqing, and Zhao, Yusheng. Reversible switching between pressure-induced amorphization and thermal-driven recrystallization in VO2(B) nanosheets. United States: N. p., 2016. Web. doi:10.1038/ncomms12214.
Wang, Yonggang, Zhu, Jinlong, Yang, Wenge, Wen, Ting, Pravica, Michael, Liu, Zhenxian, Hou, Mingqiang, Fei, Yingwei, Kang, Lei, Lin, Zheshuai, Jin, Changqing, & Zhao, Yusheng. Reversible switching between pressure-induced amorphization and thermal-driven recrystallization in VO2(B) nanosheets. United States. doi:10.1038/ncomms12214.
Wang, Yonggang, Zhu, Jinlong, Yang, Wenge, Wen, Ting, Pravica, Michael, Liu, Zhenxian, Hou, Mingqiang, Fei, Yingwei, Kang, Lei, Lin, Zheshuai, Jin, Changqing, and Zhao, Yusheng. 2016. "Reversible switching between pressure-induced amorphization and thermal-driven recrystallization in VO2(B) nanosheets". United States. doi:10.1038/ncomms12214.
@article{osti_1354516,
title = {Reversible switching between pressure-induced amorphization and thermal-driven recrystallization in VO2(B) nanosheets},
author = {Wang, Yonggang and Zhu, Jinlong and Yang, Wenge and Wen, Ting and Pravica, Michael and Liu, Zhenxian and Hou, Mingqiang and Fei, Yingwei and Kang, Lei and Lin, Zheshuai and Jin, Changqing and Zhao, Yusheng},
abstractNote = {},
doi = {10.1038/ncomms12214},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = 2016,
month = 7
}
  • Pressure-induced amorphization (PIA) and thermal-driven recrystallization have been observed in many crystalline materials. However, controllable switching between PIA and a metastable phase has not been described yet, due to the challenge to establish feasible switching methods to control the pressure and temperature precisely. Here, we demonstrate a reversible switching between PIA and thermally-driven recrystallization of VO 2(B) nanosheets. Comprehensive in situ experiments are performed to establish the precise conditions of the reversible phase transformations, which are normally hindered but occur with stimuli beyond the energy barrier. Spectral evidence and theoretical calculations reveal the pressure–structure relationship and the role of flexiblemore » VO x polyhedra in the structural switching process. Anomalous resistivity evolution and the participation of spin in the reversible phase transition are observed for the first time. Our findings have significant implications for the design of phase switching devices and the exploration of hidden amorphous materials.« less
  • Pressure-induced amorphization (PIA) and thermal-driven recrystallization have been observed in many crystalline materials. However, controllable switching between PIA and a metastable phase has not been described yet, due to the challenge to establish feasible switching methods to control the pressure and temperature precisely. Here, we demonstrate a reversible switching between PIA and thermally-driven recrystallization of VO 2(B) nanosheets. Comprehensive in situ experiments are performed to establish the precise conditions of the reversible phase transformations, which are normally hindered but occur with stimuli beyond the energy barrier. Spectral evidence and theoretical calculations reveal the pressure–structure relationship and the role of flexiblemore » VO x polyhedra in the structural switching process. Anomalous resistivity evolution and the participation of spin in the reversible phase transition are observed for the first time. Our findings have significant implications for the design of phase switching devices and the exploration of hidden amorphous materials.« less
  • An organic–inorganic halide CH 3NH 3SnI 3 perovskite with significantly improved structural stability is obtained via pressure-induced amorphization and recrystallization. In situ high-pressure resistance measurements reveal an increased electrical conductivity by 300% in the pressure-treated perovskite. Photocurrent measurements also reveal a substantial enhancement in visible-light responsiveness. In conclusion, the mechanism underlying the enhanced properties is shown to be associated with the pressure-induced structural modification.
  • We report pressure-induced amorphization phenomenon in a superconducting compound FeSe0.5Te0.5 toa pressure of 27 GPa in a diamond anvil cell. The synchrotron x-ray diffraction studies reveal that the ambient pressure tetragonal phase (space group P4/nmm) transforms to an amorphous phase at 11.5 GPa during compression and reverts back to the tetragonal phase during decompression at 2.8 GPa. The measured equation of state for the tetragonal phase and the amorphous phase is presented. The disordering of Fe(SeTe)4 tetrahedra under compression is attributed to a kinetic hindrance to a stable phase and is likely to impact its superconducting properties under high pressures.