Proton conduction in La0.6Ba0.4ScO2.8 cubic perovskite

Shin Kim, Kyu Hyoung Lee, Hong Lim Lee

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The proton conduction in single phase La0.6Ba0.4ScO2.8 with a cubic perovskite structure was studied. The endothermic peak in differential thermal analysis (DTA) curve and the weight loss in thermal gravimetric analysis (TGA) one for as-sintered sample were observed between 340 and 410 °C during the heating process in dry N2 atmosphere. These results were due to the dehydration of the water, which might have been incorporated into oxygen vacancies during the cooling process after sintering. In wet N2 atmosphere (pH(2)O=6.1 hPa), a plateau of the conductivity data was observed between 450 and 300 °C in the plot of log(σT) versus the reciprocal temperature while the conductivity data measured in dry atmosphere decreased linearly over the measured temperature range, implying that proton conduction was dominant below 450 °C.

Original languageEnglish
Pages (from-to)109-115
Number of pages7
JournalSolid State Ionics
Volume144
Issue number1-2
DOIs
Publication statusPublished - 2001 Sep 1

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Perovskite
Protons
conduction
atmospheres
protons
Industrial heating
Gravimetric analysis
thermal analysis
Oxygen vacancies
Dehydration
Differential thermal analysis
conductivity
Sintering
Cooling
dehydration
Temperature
Water
plateaus
sintering
plots

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kim, Shin ; Lee, Kyu Hyoung ; Lee, Hong Lim. / Proton conduction in La0.6Ba0.4ScO2.8 cubic perovskite. In: Solid State Ionics. 2001 ; Vol. 144, No. 1-2. pp. 109-115.
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Proton conduction in La0.6Ba0.4ScO2.8 cubic perovskite. / Kim, Shin; Lee, Kyu Hyoung; Lee, Hong Lim.

In: Solid State Ionics, Vol. 144, No. 1-2, 01.09.2001, p. 109-115.

Research output: Contribution to journalArticle

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AB - The proton conduction in single phase La0.6Ba0.4ScO2.8 with a cubic perovskite structure was studied. The endothermic peak in differential thermal analysis (DTA) curve and the weight loss in thermal gravimetric analysis (TGA) one for as-sintered sample were observed between 340 and 410 °C during the heating process in dry N2 atmosphere. These results were due to the dehydration of the water, which might have been incorporated into oxygen vacancies during the cooling process after sintering. In wet N2 atmosphere (pH(2)O=6.1 hPa), a plateau of the conductivity data was observed between 450 and 300 °C in the plot of log(σT) versus the reciprocal temperature while the conductivity data measured in dry atmosphere decreased linearly over the measured temperature range, implying that proton conduction was dominant below 450 °C.

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