title: Nonvolatile resistive switching in metal/La-doped BiFeO3/Pt sandwiches.
abstract: The resistive switching (RS) characteristics of a Bi(0.95)La(0.05)FeO(3) (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).
authors.affiliation: Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences (CAS), Ningbo, People's Republic of China.
authors.forename: Mi
authors.initials: M
authors.lastname: Li
authors.forename: Fei
authors.initials: F
authors.lastname: Zhuge
authors.forename: Xiaojian
authors.initials: X
authors.lastname: Zhu
authors.forename: Kuibo
authors.initials: K
authors.lastname: Yin
authors.forename: Jinzhi
authors.initials: J
authors.lastname: Wang
authors.forename: Yiwei
authors.initials: Y
authors.lastname: Liu
authors.forename: Congli
authors.initials: C
authors.lastname: He
authors.forename: Bin
authors.initials: B
authors.lastname: Chen
authors.forename: Run-Wei
authors.initials: RW
authors.lastname: Li