Electrical conduction behavior of layered perovskite La 1-xBa1+xGaO4-δ

Kyu Hyoung Lee, Jong Hwa Kim, Hye Lim Kim, Shin Kim, Hong Lim Lee

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Layered perovskite oxides of the system La1-xBa 1+xGaO4-δ were synthesized and their electrical conduction behavior was studied. The oxides of the composition range 0 ≤ x ≤ 0.2 were analyzed as a single orthorhombic phase with a K 2NiF4-type structure. In the presence of water vapor, proton conduction was observed due to the incorporation of water into the oxygen vacancies for these oxides. Below 350°C, La0.8Ba 1.2GaO3.9 was considered to be a pure proton conductor and the activation energy for proton conduction was measured as 0.77 eV. In a dry atmosphere, it exhibited mixed conduction consisting of oxygen ions and holes at a high oxygen partial pressure, p(O2), and showed only oxygen-ion conduction at an intermediate and low p(O2).

Original languageEnglish
Pages (from-to)254-257
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number1 A
DOIs
Publication statusPublished - 2005 Jan

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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