Effect of the electrode materials on the resistive switching of Ti4O7.

Authors :: Ko, Dong-Su
Kim, Seong-Il
Ahn, Tae-Young
Kim, Sung-Dae
Oh, Young-Hwa
Kim, Young-Woon
Source :: Applied Physics Letters. 7/30/2012, Vol. 101 Issue 5, p053502. 4p. 1 Black and White Photograph, 2 Graphs.
Publication Year :: 2012
Abstract: The Ti4O7 Magnéli phase was grown on a Pt substrate by reactive DC magnetron sputtering. Resistive switching of a Ti4O7 thin film was tested with the three different electrode materials of Ti, W, and Pt. The electrical characteristics revealed ohmic contact with a Ti or W top electrode on the Ti4O7/Pt, while the Pt/Ti4O7/Pt structure showed the characteristics of a diode in a pristine state and unipolar resistive switching behavior after a soft breakdown. The resistive switching behavior of Pt/Ti4O7/Pt was found to be related to the formation of an amorphous Ti-Pt-O layer which originated from the intermixing of Pt with Ti4O7. [ABSTRACT FROM AUTHOR]