Resistance switching in epitaxial SrCoOx thin films
- 등재 SCIE, SCOPUS
- 발행기관 AMER INST PHYSICS
- 발행년도 2014
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000108796
- 본문언어 영어
- Published As http://dx.doi.org/10.1063/1.4893323
초록/요약
We observed bipolar switching behavior from an epitaxial strontium cobaltite film grown on a SrTiO3 (001) substrate. The crystal structure of strontium cobaltite has been known to undergo topotactic phase transformation between two distinct phases: insulating brownmillerite (SrCoO2.5) and conducting perovskite (SrCoO3-delta) depending on the oxygen content. The current-voltage characteristics of the strontium cobaltite film showed that it could have a reversible insulator-tometal transition triggered by electrical bias voltage. We propose that the resistance switching in the SrCoOx thin film could be related to the topotactic phase transformation and the peculiar structure of SrCoO2.5. (c) 2014 AIP Publishing LLC.
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