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High temperature oxygen sensing properties of oxygen deficient RBaCo2O5+δthick films

Authors
Journal
Sensors and Actuators B Chemical
0925-4005
Publisher
Elsevier
Volume
177
Identifiers
DOI: 10.1016/j.snb.2012.10.102
Keywords
  • Oxygen Sensor
  • Rbaco2O5+δ
  • Electrical Resistivity
  • Oxygen Intake/Release

Abstract

Abstract RBaCo2O5+δ (R=Sm, Eu, Dy, Gd, and Y) thick films were prepared by the solid state reaction followed by the spin-coating method. The oxygen resistivity sensor properties of these films were investigated in switching O2/N2 atmosphere. The results show that the RBaCo2O5+δ films are promising as oxygen resistance sensors at elevated temperature. Especially, DyBaCo2O5+δ film shows a fast response speed, high sensitivity and good repeatability at 600°C. The correlation between the sensor properties of RBaCo2O5+δ thick films and their oxygen intake/release properties is also discussed.

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