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

doi:10.7566/JPSJ.85.034705

Electron-Ion mixed conduction of BaCe_0.90Y_0.10O_3-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

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

The structural and electrical properties of a c-Axis-oriented BaCe_0.85Ru_0.05_Y0.10O_3-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 (E_A) 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 E_A 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 language	English
Article number	034705
Journal	journal of the physical society of japan
Volume	85
Issue number	3
DOIs	https://doi.org/10.7566/JPSJ.85.034705
Publication status	Published - 2016 Jan 1
Externally published	Yes

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 BaCe_0.90Y_0.10O_3-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

Electron-Ion mixed conduction of BaCe_0.90Y_0.10O_3-δ Thin film generated by Ru substitution. / Ochi, Masanori; Tsuchiya, Takashi; Yamaguchi, Shohei; Suetsugu, Takaaki; Suzuki, Naoya; Kobayashi, Masaki; Minohara, Makoto; Horiba, Koji; Kumigashira, Hiroshi; Higuchi, Tohru.

In: journal of the physical society of japan, Vol. 85, No. 3, 034705, 01.01.2016.

Research output: Contribution to journal › Article

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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.",

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AU - Ochi, Masanori

AU - Tsuchiya, Takashi

AU - Yamaguchi, Shohei

AU - Suetsugu, Takaaki

AU - Suzuki, Naoya

AU - Kobayashi, Masaki

AU - Minohara, Makoto

AU - Horiba, Koji

AU - Kumigashira, Hiroshi

AU - Higuchi, Tohru

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N2 - 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.

AB - 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.

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