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

T. Higuchi; T. Tsukamoto; H. 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 SrZr_0.90M _0.10O₃ (M = Y³⁺, Sc³⁺) probed by soft-X-ray spectroscopy

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

Department of Applied Physics

Research output: Contribution to journal › Conference article › peer-review

6 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 2005
Event	30th Symposium on Solid State Ionics in Japan - Duration: 1 Dec 2004 → 3 Dec 2004

Keywords

Electronic structure
Holes
Soft-X-ray emission spectroscopy (SXES)
SrZrMO (M = Y, Sc)
X-ray absorption spectroscopy (XAS)

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10.1016/j.ssi.2005.06.030

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

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.",

keywords = "Electronic structure, Holes, Soft-X-ray emission spectroscopy (SXES), SrZrMO (M = Y, Sc), X-ray absorption spectroscopy (XAS)",

author = "T. Higuchi and T. Tsukamoto and H. Matsumoto and T. Shimura and K. Yashiro and T. Kawada and J. Mizusaki and S. Shin and T. Hattori",

note = "Funding Information: This work was partially supported by New Energy and Industrial Technology Development Organization (NEDO), and Grant-In-Aid for Science Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.; 30th Symposium on Solid State Ionics in Japan ; Conference date: 01-12-2004 Through 03-12-2004",

year = "2005",

month = oct,

doi = "10.1016/j.ssi.2005.06.030",

language = "English",

volume = "176",

pages = "2435--2438",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier B.V.",

number = "31-34",

}

TY - JOUR

T1 - Electronic structure of protonic conductor SrZr0.90M 0.10O3 (M = Y3+, Sc3+) probed by soft-X-ray spectroscopy

AU - Higuchi, T.

AU - Tsukamoto, T.

AU - Matsumoto, H.

AU - Shimura, T.

AU - Yashiro, K.

AU - Kawada, T.

AU - Mizusaki, J.

AU - Shin, S.

AU - Hattori, T.

N1 - Funding Information: This work was partially supported by New Energy and Industrial Technology Development Organization (NEDO), and Grant-In-Aid for Science Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

PY - 2005/10

Y1 - 2005/10

N2 - 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.

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.

KW - Electronic structure

KW - Holes

KW - Soft-X-ray emission spectroscopy (SXES)

KW - SrZrMO (M = Y, Sc)

KW - X-ray absorption spectroscopy (XAS)

UR - http://www.scopus.com/inward/record.url?scp=25644460415&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2005.06.030

DO - 10.1016/j.ssi.2005.06.030

M3 - Conference article

AN - SCOPUS:25644460415

SN - 0167-2738

VL - 176

SP - 2435

EP - 2438

JO - Solid State Ionics

JF - Solid State Ionics

IS - 31-34

T2 - 30th Symposium on Solid State Ionics in Japan

Y2 - 1 December 2004 through 3 December 2004

ER -

Electronic structure of protonic conductor SrZr_0.90M _0.10O₃ (M = Y³⁺, Sc³⁺) probed by soft-X-ray spectroscopy

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Keywords

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