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

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 VO2(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 flexible VOx 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. Lastly, our findings have significant implications for the design of phase switching devices and the exploration of hidden amorphous materials.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [5] ;  [5] ;  [6] ;  [7] ;  [8] ;  [9]
  1. Univ. of Nevada, Las Vegas, NV (United States). HiPSEC ; Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab., High Pressure Synergetic Consortium (HPSync)
  2. Univ. of Nevada, Las Vegas, NV (United States). HiPSEC
  3. Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab., High Pressure Synergetic Consortium (HPSync); Center for High Pressure Science and Technology Advanced Research (HPSTAR), Pudong, Shanghai (China)
  4. Huanghe Science and Technology College, Zhengzhou, Henan (China). Inst. of Nanostructured Functional Materials
  5. Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Lab.
  6. Chinese Academy of Sciences (CAS), Beijing (China). Technical Inst. of Physics and Chemistry, Beijing Centre for Crystal Research and Development
  7. Chinese Academy of Sciences (CAS), Beijing (China). Technical Inst. of Physics and Chemistry, Beijing Centre for Crystal Research and Developmen
  8. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. National Lab. for Condensed Matter Physics
  9. Univ. of Nevada, Las Vegas, NV (United States). HiPSEC; Southern Univ. of Science and Technology, Shenzhen (China)
Publication Date:
OSTI Identifier:
1326676
Grant/Contract Number:
NA0001982; NA0001974; FG02-99ER45775; EAR 1606856; NA-0002006; EAR-1128799; FG02-94ER14466
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
Nevada System of Higher Education; Univ. of Las Vegas; Carnegie Institution of Washington; Georgia Inst. Of Technology; Univ. of Chicago
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY