Electron-Ion mixed conduction of BaCe0.90Y0.10O3-δ Thin film generated by Ru substitution

Masanori Ochi, Takashi Tsuchiya, Shohei Yamaguchi, Takaaki Suetsugu, Naoya Suzuki, Masaki Kobayashi, Makoto Minohara, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi

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2 Citations (Scopus)

Abstract

The structural and electrical properties of a c-Axis-oriented BaCe0.85Ru0.05Y0.10O3-δ (BCRY) thin film on an Al2O3(0001) substrate depending on film thickness have been studied. The lattice constant of the c-Axis decreases with increasing film thickness. The electrical conductivity is higher in the thin film with a small lattice constant. The activation energy (EA) of the dry BCRY thin film with a high conductivity is 0.26 eV, which corresponds to half of that of the bulk ceramic. The BCRY thin film exhibits electron-ion mixed conduction with a small EA of 0.18 eV below 400 °C in H2O atmosphere. The Ce3+ state created by oxygen vacancies, which locates at the top of the valence band, plays an important role in the electron-ion mixed conduction or proton conduction of the BCRY thin film.

Original languageEnglish
Article number034705
Journaljournal of the physical society of japan
Volume85
Issue number3
DOIs
Publication statusPublished - 2016 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Ochi, M., Tsuchiya, T., Yamaguchi, S., Suetsugu, T., Suzuki, N., Kobayashi, M., Minohara, M., Horiba, K., Kumigashira, H., & Higuchi, T. (2016). Electron-Ion mixed conduction of BaCe0.90Y0.10O3-δ Thin film generated by Ru substitution. journal of the physical society of japan, 85(3), [034705]. https://doi.org/10.7566/JPSJ.85.034705