PO2 dependant resistance switch effect in highly epitaxial (LaBa) Co2 O5+δ thin films

  • Jian Liu
  • , Gregory Collins
  • , Ming Liu
  • , C. L. Chen
  • , Jiechao Jiang
  • , Efsftathios I. Meletis
  • , Qingyu Zhang
  • , Chuang Dong

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Giant resistance switching behavior in mixed conductive (LaBa) Co 2 O5+δ epitaxial thin film were discovered in high temperature and reducing environments during the reduction and reoxidation process. A reproducible resistance response of over 99% was achieved in the films during a change of 4% H2 /96% N2 to oxygen at temperature range of 400-780°C. The results indicate that at, low oxygen partial pressure, the extension of oxygen deficiency is an essential factor to the high temperature physical properties of (LaBa) Co2 O5+δ and demonstrates its potential application as a chemical sensor device for reducing environments at high temperature.

Original languageEnglish
Article number094101
JournalApplied Physics Letters
Volume97
Issue number9
DOIs
StatePublished - 30 Aug 2010
Externally publishedYes

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