Table of Contents
Journal of Experimental Physics
Volume 2014 (2014), Article ID 951297, 6 pages
http://dx.doi.org/10.1155/2014/951297
Research Article

Electrical Switching in Thin Film Structures Based on Molybdenum Oxides

Petrozavodsk State University, Petrozavodsk 185910, Russia

Received 21 May 2014; Revised 21 August 2014; Accepted 2 September 2014; Published 18 September 2014

Academic Editor: Tatyana Sizyuk

Copyright © 2014 A. L. Pergament et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We report on the experimental study of electrical instabilities in thin film structures on the basis of molybdenum oxides. Thin films of molybdenum oxide are obtained by thermal vacuum evaporation and anodic oxidation. The results of X-ray structural analysis, investigation of optical and electrical properties, are presented. It is shown that the initial vacuum-deposited oxide represents amorphous MoO3. In the MOM (metal-oxide-metal) structures with Mo oxide films obtained by the two methods, the effect of electrical switching with an S-shaped current-voltage characteristic is found. We put forward a hypothesis according to which the switching mechanism is associated with the development of electrical instability caused by the insulator-to-metal transition in Mo8O23. The switching channel, comprising this lower valence oxide, emerges in the initial film during the process of electrical forming of the MOM structure. The obtained results indicate the possibility of application of these structures in oxide micro- and nanoelectronics as electronic switches and other electronic devices.