Voltage sweep modulated conductance quantization in oxide nanocomposites

Adnan Younis, Dewei Chu, Sean Li

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


Bipolar resistive switching characteristics and conductance quantization behaviour as a function of voltage sweep have been demonstrated in a nanocomposite based device comprising of SnO2 nanoparticles residing over CeO2 nanorod arrays. The voltage sweep rate has been found to greatly influence the device performance. The stepwise conductance behaviour in the nanocomposite device emerged at a low voltage sweep rate and this behaviour can be attributed to the formation and disruption of atomic scale conducting filaments. In AC pulse mode, the quantized conductance states with integer or half integer multiples of Go were also observed. Furthermore, the impact of varying the SnO2 concentration on the resistive switching performance of the nanocomposite based device was also studied. The present study reveals that the conductance quantization behaviors can be well modulated by controlling the voltage sweep rate and in turn could offer the prospective of multi-level data storage capability.

Original languageEnglish
Pages (from-to)10291-10297
Number of pages7
JournalJournal of Materials Chemistry C
Issue number48
Publication statusPublished - Dec 28 2014
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Materials Chemistry


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