Electronic structure of protonic conductor SrZr0.90M 0.10O3 (M = Y3+, Sc3+) probed by soft-X-ray spectroscopy

T. Higuchi; T. Tsukamoto; Hiroshige Matsumoto; T. Shimura; K. Yashiro; T. Kawada; J. Mizusaki; S. Shin; T. Hattori

doi:10.1016/j.ssi.2005.06.030

Electronic structure of protonic conductor SrZr0.90M 0.10O3 (M = Y3+, Sc3+) probed by soft-X-ray spectroscopy

T. Higuchi, T. Tsukamoto, Hiroshige Matsumoto, T. Shimura, K. Yashiro, T. Kawada, J. Mizusaki, S. Shin, T. Hattori

Research output: Contribution to journal › Conference article

5 Citations (Scopus)

Abstract

The electronic structure of protonic conductor SrZr_1-xM _xO_3-δ (M = Y³⁺, Sc³⁺) has been studied by soft-X-ray spectroscopy. The valence band is mainly composed of O 2p state. The conduction band is composed of Zr 4d state. The holes and the acceptor level are observed at the top of valence band and just above the Fermi level (E_F), respectively. In H₂-annealed SrZr _1-xM_xO_3-δ (M = Y³⁺, Sc ³⁺), their intensities decrease and the hydrogen-induced level is created at just below E_F. The energy separation between the bottom of the hydrogen-induced level and the top of valence band agrees with the activation energy estimated from the electrical conductivity.

Original language	English
Pages (from-to)	2435-2438
Number of pages	4
Journal	Solid State Ionics
Volume	176
Issue number	31-34
DOIs	https://doi.org/10.1016/j.ssi.2005.06.030
Publication status	Published - Oct 1 2005
Externally published	Yes
Event	30th Symposium on Solid State Ionics in Japan - Duration: Dec 1 2004 → Dec 3 2004

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All Science Journal Classification (ASJC) codes

Electrochemistry
Physical and Theoretical Chemistry
Energy Engineering and Power Technology
Materials Chemistry
Condensed Matter Physics

Cite this

Higuchi, T., Tsukamoto, T., Matsumoto, H., Shimura, T., Yashiro, K., Kawada, T., ... Hattori, T. (2005). Electronic structure of protonic conductor SrZr0.90M 0.10O3 (M = Y3+, Sc3+) probed by soft-X-ray spectroscopy. Solid State Ionics, 176(31-34), 2435-2438. https://doi.org/10.1016/j.ssi.2005.06.030

Electronic structure of protonic conductor SrZr0.90M 0.10O3 (M = Y3+, Sc3+) probed by soft-X-ray spectroscopy. / Higuchi, T.; Tsukamoto, T.; Matsumoto, Hiroshige; Shimura, T.; Yashiro, K.; Kawada, T.; Mizusaki, J.; Shin, S.; Hattori, T.

In: Solid State Ionics, Vol. 176, No. 31-34, 01.10.2005, p. 2435-2438.

Research output: Contribution to journal › Conference article

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abstract = "The electronic structure of protonic conductor SrZr1-xM xO3-δ (M = Y3+, Sc3+) has been studied by soft-X-ray spectroscopy. The valence band is mainly composed of O 2p state. The conduction band is composed of Zr 4d state. The holes and the acceptor level are observed at the top of valence band and just above the Fermi level (EF), respectively. In H2-annealed SrZr 1-xMxO3-δ (M = Y3+, Sc 3+), their intensities decrease and the hydrogen-induced level is created at just below EF. The energy separation between the bottom of the hydrogen-induced level and the top of valence band agrees with the activation energy estimated from the electrical conductivity.",

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AU - Tsukamoto, T.

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AU - Shimura, T.

AU - Yashiro, K.

AU - Kawada, T.

AU - Mizusaki, J.

AU - Shin, S.

AU - Hattori, T.

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AB - The electronic structure of protonic conductor SrZr1-xM xO3-δ (M = Y3+, Sc3+) has been studied by soft-X-ray spectroscopy. The valence band is mainly composed of O 2p state. The conduction band is composed of Zr 4d state. The holes and the acceptor level are observed at the top of valence band and just above the Fermi level (EF), respectively. In H2-annealed SrZr 1-xMxO3-δ (M = Y3+, Sc 3+), their intensities decrease and the hydrogen-induced level is created at just below EF. The energy separation between the bottom of the hydrogen-induced level and the top of valence band agrees with the activation energy estimated from the electrical conductivity.

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10.1016/j.ssi.2005.06.030