Jpn. J. Appl. Phys. 40 (2001) pp. 4162-4163 |Next Article| |Table of Contents|
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Protonic Conduction in the Single Crystals of SrZr0.95M0.05O3 (M=Y, Sc, Yb, Er)
Department of Applied Physics, Science University of Tokyo, Tokyo 162-8601, Japan
1Research Institute for Scientific Measurements, Tohoku University, Sendai 980-8577, Japan
2Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
3RIKEN, Hyogo 679-5143, Japan
(Received November 24, 2000; accepted for publication February 21, 2001)
The protonic conductivities of SrZr0.95M0.05O3 doped with four acceptor ions (M3+=Y3+, Sc3+, Yb3+, Er3+) have been studied in the single crystal form. The protonic conductivity is found in four acceptor ions, indicating that protons migrate by hopping from site to site. The Yb-doped crystal has the lowest activation energy and the highest conductivity amongst the four acceptor ions. This is considered to be due to the difference in strength of the O–H bond with different acceptor doping.
KEYWORDS:protonic conductivity, SrZrO3, acceptor, O–H bond, activation energy
- H. Iwahara, T. Esaka, H. Uchida and N. Maeda: Solid State Ionics 3–4 (1980) 359.
- H. H. Huang, M. Ishigame and S. Shin: Solid State Ionics 47 (1991) 251.
- S. Shin, H. H. Huang, M. Ishigame and H. Iwahara: Solid State Ionics 40/41 (1990) 910.
- N. Sata, K. Hiramoto, M. Ishigame, S. Hosoya, N. Niimura and S. Shin:
Phys. Rev. B 54 (1996) 15795[APS].
- N. Sata, S. Shin, K. Shibata and M. Ishigame: J. Phys. Soc. Jpn. 68 (1999) 3600.
- O. Kamishima, T. Hattori, K. Ohota, Y. Chiba and M. Ishigame:
J. Phys. Condens. Matter 11 (1999) 5355[IoP STACKS].
- H. Yugami, Y. Shibayama, S. Matsuo, M. Ishigame and S. Shin: Solid State Ionics 85 (1996) 319.
- A. Novac: Struct. & Bond. 18 (1974) 177.
- S. Yamaguchi, K. Kobayashi, T. Higuchi, S. Shin and Y. Iguchi: Solid State Ionics 136–137 (2000) 305.
- K. Kobayashi, S. Yamaguchi and Y. Iguchi: Solid State Ionics 108 (1998) 355.
- T. Higuchi, T. Tsukamoto, Y. Tezuka, K. Kobayashi, S. Yamaguchi and S. Shin:
Jpn. J. Appl. Phys. 39 (2000) L 133[JSAP].