Dependence of Electrode on Switching Effect of Pr1-xCaxMnO3 Thin Film
- 1 March 2005
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 44 (3R)
- https://doi.org/10.1143/jjap.44.1260
Abstract
We examined the effect of top-electrode materials on the electric-pulse-induced resistance (EPIR) change property of Pr1-x Ca x MnO3 (PCMO) thin films grown on a Pt/Ti/SiO2/Si substrate. To investigate the top-electrode effect, we used Al, Pt, Au/Cr and Au (10%)–Pd (90%) alloy metals as the top electrodes on PCMO films with a Pt bottom electrode. The thin films with an Al top and a Au/Cr electrode exhibited EPIR switching phenomena. With a top electrode of 75 µm diameter circle, the Pr0.7Ca0.3MnO3 film shows a low resistance in the range of 20–40 Ω. The ratio between low resistance and high resistance is approximately 2 under an applied single pulse of 50 ns duration and ±4 V magnitude. On the contrary, the thin films with Pt and Au–Pd alloy top electrodes exhibited no EPIR switching.Keywords
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