Resistance switching in epitaxial SrCoOx thin films

Authors
Tambunan, Octolia T.Parwanta, Kadek J.Acharya, Susant K.Lee, Bo WhaJung, Chang UkKim, Yeon SooPark, Bae HoJeong, HuiseongPark, Ji-YongCho, Myung RaePark, Yun DanielChoi, Woo SeokKim, Dong-WookJin, HyunwooLee, SuyounSong, Seul JiKang, Sung-JinKim, MiyoungHwang, Cheol Seong
Issue Date
2014-08-11
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.105, no.6
Abstract
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.
Keywords
BROWNMILLERITE SRCOO2.5; PHASE-TRANSFORMATION; REDOX REACTIONS; BROWNMILLERITE SRCOO2.5; PHASE-TRANSFORMATION; REDOX REACTIONS
ISSN
0003-6951
URI
https://pubs.kist.re.kr/handle/201004/126475
DOI
10.1063/1.4893323
Appears in Collections:
KIST Article > 2014
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