Proton diffusivity in SrZrO3: Sc3+ single crystals studied by infrared absorption spectroscopy

H. Yugami; Y. Shibayama; T. Hattori; M. Ishigame

doi:10.1016/0167-2738(95)00057-D

Proton diffusivity in SrZrO₃: Sc³⁺ single crystals studied by infrared absorption spectroscopy

H. Yugami, Y. Shibayama, T. Hattori, M. Ishigame

ENG - Mechanical Systems Engineering

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

The diffusivity of protons in Sc³⁺ doped-SrZrO₃ single crystals have been determined by the infrared absorption technique in the temperature range of 400-750 °C. The proton diffusion coefficient D has been evaluated by two different methods, i.e. (1) the sudden change of P_H₂O and (2) the exchange between H⁺ and D⁺-vapor. It is found that the D value of proton obtained in SrZrO₃ single crystals is smaller than that obtained in ceramics, and the activation energy of D obtained by the method (1) is larger than that of ceramics. From these results, comes a suggestion that the defect concentration (or distribution) in the ceramics grains may be different from that in single crystals.

Original language	English
Pages (from-to)	171-176
Number of pages	6
Journal	Solid State Ionics
Volume	79
Issue number	C
DOIs	https://doi.org/10.1016/0167-2738(95)00057-D
Publication status	Published - 1995 Jul

Keywords

Diffusion coefficient
Infrared absorption
Proton conductors

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/0167-2738(95)00057-D

Cite this

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title = "Proton diffusivity in SrZrO3: Sc3+ single crystals studied by infrared absorption spectroscopy",

abstract = "The diffusivity of protons in Sc3+ doped-SrZrO3 single crystals have been determined by the infrared absorption technique in the temperature range of 400-750 °C. The proton diffusion coefficient D has been evaluated by two different methods, i.e. (1) the sudden change of PH2O and (2) the exchange between H+ and D+-vapor. It is found that the D value of proton obtained in SrZrO3 single crystals is smaller than that obtained in ceramics, and the activation energy of D obtained by the method (1) is larger than that of ceramics. From these results, comes a suggestion that the defect concentration (or distribution) in the ceramics grains may be different from that in single crystals.",

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author = "H. Yugami and Y. Shibayama and T. Hattori and M. Ishigame",

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journal = "Solid State Ionics",

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T1 - Proton diffusivity in SrZrO3

T2 - Sc3+ single crystals studied by infrared absorption spectroscopy

AU - Yugami, H.

AU - Shibayama, Y.

AU - Hattori, T.

AU - Ishigame, M.

PY - 1995/7

Y1 - 1995/7

N2 - The diffusivity of protons in Sc3+ doped-SrZrO3 single crystals have been determined by the infrared absorption technique in the temperature range of 400-750 °C. The proton diffusion coefficient D has been evaluated by two different methods, i.e. (1) the sudden change of PH2O and (2) the exchange between H+ and D+-vapor. It is found that the D value of proton obtained in SrZrO3 single crystals is smaller than that obtained in ceramics, and the activation energy of D obtained by the method (1) is larger than that of ceramics. From these results, comes a suggestion that the defect concentration (or distribution) in the ceramics grains may be different from that in single crystals.

AB - The diffusivity of protons in Sc3+ doped-SrZrO3 single crystals have been determined by the infrared absorption technique in the temperature range of 400-750 °C. The proton diffusion coefficient D has been evaluated by two different methods, i.e. (1) the sudden change of PH2O and (2) the exchange between H+ and D+-vapor. It is found that the D value of proton obtained in SrZrO3 single crystals is smaller than that obtained in ceramics, and the activation energy of D obtained by the method (1) is larger than that of ceramics. From these results, comes a suggestion that the defect concentration (or distribution) in the ceramics grains may be different from that in single crystals.

KW - Diffusion coefficient

KW - Infrared absorption

KW - Proton conductors

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