Superelastic metal-insulator phase transition in single-crystal VO[subscript 2] nanobeams
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Grossman_Superelastic metal.pdf
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Author(s)
Fan, W.
Huang, S.
Cao, J.
Ertekin, Elif
Barrett, C.
Khanal, D. R.
Wu, J.
Grossman, Jeffrey C.
Date Issued
December 2009
Journal
Physical Review B
Publisher
American Physical Society
Citation
Fan, W., S. Huang, J. Cao, E. Ertekin, C. Barrett, D. R. Khanal, J. C. Grossman, and J. Wu. “Superelastic metal-insulator phase transition in single-crystal VO_{2} nanobeams.” Physical Review B 80, no. 24 (December 2009). © 2009 The American Physical Society
Version
Final published version
Abstract
We investigated external-stress-induced metal-insulator phase transitions in cantilevered single-crystal VO[subscript 2] nanobeams at variable temperatures using a combined theoretical and experimental approach. An atomic force microscope was used to measure the force-displacement curve of the nanobeams, which showed nonlinearity that signifies activation and expansion of domains of a new phase out of the old one. Superelasticity of the VO[subscript 2] nanobeam and supersaturation of the phase transition were clearly observed and quantified within the general theory of first-order phase transitions. Phase field modeling was employed to understand the energetics of the domain formation.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.80.241105
