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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 SrZr_0.95M_0.05O₃ (M=Y, Sc, Yb, Er)

Tohru Higuchi, Takeyo Tsukamoto, Noriko Sata¹, Kiyohisa Hiramoto^1,, Mareo Ishigame^1, and Shik Shin^2,3

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 SrZr_0.95M_0.05O₃ 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.

URL: http://jjap.jsap.jp/link?JJAP/40/4162/
DOI: 10.1143/JJAP.40.4162
KEYWORDS:protonic conductivity, SrZrO₃, acceptor, O–H bond, activation energy

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References | Citing Articles (16)

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