Journal
NANOTECHNOLOGY
Volume 21, Issue 42, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/21/42/425202
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Funding
- Chinese Academy of Sciences (CAS)
- State Key Project of Fundamental Research of China (973 Program)
- National Natural Science Foundation of China
- Zhejiang Qianjiang Talent Project
- Zhejiang and Ningbo Natural Science Foundations
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The resistive switching (RS) characteristics of a Bi0.95La0.05FeO3 (La-BFO) film sandwiched between a Pt bottom electrode and top electrodes (TEs) made of Al, Ag, Cu, and Au have been studied. Devices with TEs made of Ag and Cu showed stable bipolar RS behaviors, whereas those with TEs made of Al and Au exhibited unstable bipolar RS. The Ag/La-BFO/Pt structure showed an on/off ratio of 10(2), a retention time > 10(5) s, and programming voltages < 1 V. The RS effect can be attributed to the formation/rupture of nanoscale metal filaments due to the diffusion of the TEs under a bias voltage. The maximum current before the reset process (on-to-off switching) was found to increase linearly with the current compliance applied during the set process (off-to-on switching).
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