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Updated: Jun 19, 2026

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
Published on: May 13, 2020
Anisotropic structure deformation in the VO2 metal-insulator transition
Jamie M Booth1, Philip S Casey
1CSIRO Materials Science and Engineering, Private Bag 33, Clayton South, 3169, Victoria, Australia.
Abstract:
X-ray absorption fine structure data of tungsten (VI)-doped vanadium dioxide in the insulating phase, and during the metal-insulator transition, are presented for the first time. Tungsten L(III)- and vanadium K-edge data suggest that significant expansion in the [110] and [110] directions occurs across the phase transition from low to high temperature. This distortion breaks the bonds between Peierls-paired vanadium ions, opening a band gap, and reveals the nature of the mechanism by which tungsten doping lowers the transition temperature and enthalpy.
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