Quantitative spatial mapping of distorted state phases during the metal-insulator phase transition for nanoscale VO₂ engineering.

ABSTRACT: Vanadium dioxide (VO₂) material, known for changing physical properties due to metal-insulator transition (MIT) near room temperature, has been reported to undergo a phase change depending on the strain. This fact can be a significant problem for nanoscale devices in VO₂, where the strain field covers a large area fraction, spatially non-uniform, and the amount of strain can vary during the MIT process. Direct measurement of the strain field distribution during MIT is expected to establish a methodology for material phase identification. We have demonstrated the effectiveness of geometric phase analysis (GPA), high-resolution transmission electron microscopy techniques, and transmission electron diffraction (TED). The GPA images show that the nanoregions of interest a

SUBMITTER: Ashida Y 

PROVIDER: S-EPMC9793943 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature