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Oxygen ion drift-driven dual bipolar hysteresis curves in a single Pt/Ta2O5-x/TiOxNy framework
- Authors
- Lee, Ah Rahm; Bae, Yoon Cheol; Baek, Gwang Ho; Chung, Je Bock; Kang, Tae Sung; Lee, Jong Sun; Park, Jea-Gun; Im, Hyun Sik; Hong, Jin Pyo
- Issue Date
- 28-Oct-2013
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.103, no.18
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 103
- Number
- 18
- ISSN
- 0003-6951
1077-3118
- Abstract
- We describe abnormal dual bipolar resistive switching events in simple Pt/Ta2O5-x/TiOxNy and Pt/Ta2O5-x/TiN matrices in which the typical switching directions (SD) are initially clockwise (CW). The negative difference region in a high resistance state before reaching the typical "CW set" process enables the SD transition to a counterclockwise direction. It thereby emphasizes the occurrence of a highly stable secondary bipolar resistive switching curve. The origin of two different switching modes is described by adapting a bias-dependent oxygen ion accumulation and depletion process at TiOxNy and TiN electrode interfaces and by performing various structural analyses. (C) 2013 AIP Publishing LLC.
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