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Updated: Mar 11, 2026
In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
Published on: May 13, 2020
NEXAFS study of electronic and atomic structure of active layer in Al/indium tin oxide/TiO2 stack during resistive
Elena Filatova1, Aleksei Konashuk1, Yuri Petrov1
1Institute of Physics, St Petersburg State University , Ul'yanovskaya Str. 1, Peterhof, 198504 , St Petersburg , Russia.
Abstract:
We have studied the stability of the resistive switching process in the Al/(In2O3)0.9(SnO2)0.1/TiO2 assembly grown by atomic layer deposition. Besides electrical characterization the effect of electric field on the atomic electronic structure of the TiO2 layer was studied using near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The region of the current instability in the I-V characteristics was revealed. Presumably this current instability is supported by the amorphous structure of the TiO2 film but is initiated by the surface morphology of the Al substrate. A formation of the O2 molecules was established which occurs specifically in the region of the current instability that is a result of electrical Joule heating manifestation.
