Electrical switching in metal-oxide-metal structures based on anodic niobium oxide

Nonlinear current-voltage (I-V) characteristics with S-type negative differential resistance, as a characteristic feature of the switching effect, are inherent in a variety of transition metal oxides, niobium oxide included. Although this phenomenon has been known for a long time, recent proposals t...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2019-12, Vol.1399 (2), p.22017
Main Authors: Pergament, A L, Boriskov, P P
Format: Article
Language:English
Subjects:
Critical temperature
Current voltage characteristics
Electroforming
Neural networks
Niobium oxides
Phase transitions
Physics
Sandwich structures
Switching
Threshold voltage
Transition metal oxides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nonlinear current-voltage (I-V) characteristics with S-type negative differential resistance, as a characteristic feature of the switching effect, are inherent in a variety of transition metal oxides, niobium oxide included. Although this phenomenon has been known for a long time, recent proposals to use oxide-based switching devices as elements of oscillatory neural networks have resumed the interest in this area. In this work, electrical switching in sandwich structures based on anodic films of niobium oxide is studied. After being electroformed, these structures exhibit S-shaped I-V characteristics. As the temperature increases, the threshold voltage decreases, presumably tending to zero at a critical temperature T0, which correlates with the temperature of metal-insulator phase transition of niobium dioxide. Channels consisting of NbO2 are formed in the initial anodic films during the process of electroforming.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1399/2/022017