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Transport properties and anomalous fatigue effect of Ag/Bi0.9La0.1FeO3/La0.7Sr0.3MnO3 heterostructures

  • Rong Li Gao*
  • , Chun Lin Fu
  • , Wei Cai
  • , Gang Chen
  • , Xiao Ling Deng
  • , Huai Wen Yang
  • , Ji Rong Sun
  • , Bao Gen Shen
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The transport properties and fatigue effect of Ag/Bi0.9La0.1FeO3/La0.7Sr0.3MnO3 heterostructures are described. By examining the I - V curves, an anomalous fatigue effect was found and its influences on resistive states were studied. I - V curves combined with C - f spectra were used to directly analyze the transport properties and fatigue effect. Compared to the first I - V cycle state, this structure shows more than one order increase of resistance after 100 cycles of "I - V curve training". The redistribution of oxygen vacancies in the depletion layer of Ag/Bi0.9La0.1FeO3 is believed to be responsible for the different resistance mechanisms and tenfold magnitude drop in resistance. The resistive switching is understood to be caused by electric field - induced carrier trapping and detrapping, which changes the depletion layer thickness at the Ag/Bi0.9La0.1FeO3 interface.

Original languageEnglish
Article number097702
JournalChinese Physics B
Volume23
Issue number9
DOIs
StatePublished - 2014
Externally publishedYes

Keywords

  • fatigue effect
  • heterostructure
  • switching
  • transport properties

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