Improved endurance of resistive switching TiO2 thin film by hourglass shaped Magneli filaments
- Authors
- Kim, Gun Hwan; Lee, Jong Ho; Seok, Jun Yeong; Song, Seul Ji; Yoon, Jung Ho; Yoon, Kyung Jean; Lee, Min Hwan; Kim, Kyung Min; Lee, Hyung Dong; Ryu, Seung Wook; Park, Tae Joo; Hwang, Cheol Seong
- Issue Date
- Jun-2011
- Publisher
- American Institute of Physics
- Citation
- Applied Physics Letters, v.98, no.26, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- Applied Physics Letters
- Volume
- 98
- Number
- 26
- Start Page
- 1
- End Page
- 4
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/37350
- DOI
- 10.1063/1.3600784
- ISSN
- 0003-6951
- Abstract
- A modified biasing scheme was adopted to improve the electrical endurance characteristics of conducting filamentary resistive switching (RS) in a Pt/TiO2/Pt RS cell. The modified bias scheme included the application of bias voltages with alternating polarity, even though RS proceeds in non-polar mode, which results in the stable distribution of each resistance states as well as improved endurance. This was attributed to the minimized consumption of oxygen ions in the TiO2 film, which can be induced by the formation of hourglass-shaped conducting filament (HSCF). The presence of a HSCF was confirmed by high-resolution transmission electron microscopy. (C) 2011 American Institute of Physics. [doi:10.1063/1.3600784]
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