First-Principles Molecular-Dynamics Simulation of Proton Diffusion in Sc-Doped SrTiO3.
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- Shimojo Fuyuki
- Faculty of Integrated Arts and Sciences, Hiroshima University, Higashi–Hiroshima 739
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- Hoshino Kozo
- Faculty of Integrated Arts and Sciences, Hiroshima University, Higashi–Hiroshima 739
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- Okazaki Hideo
- Department of Physics, Faculty of Science, Niigata University, Niigata 950–21
Bibliographic Information
- Other Title
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- First-Principles Molecular-Dynamics Sim
- First-Principles Molecular-Dynamics Simulation of Proton Diffusion in Sc-Doped SrTiO<b><sub>3</sub></b>
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Description
The microscopic mechanism of proton diffusion in the protonic conductor Sc-doped SrTiO3is studied by a first-principles molecular-dynamics simulation.It is shown that the proton forms an O-H bond with a neighboring O ion, and the frequency of the stretching vibration of the O-H bondis about 2800 cm-1, which agrees reasonably well with the result of experiment.Two types of diffusion paths are observed:one is diffusion around the O ion while retaining the O-H bond, and the other is diffusion between the two neighboring O ionswhile switching the O-H bond.During the former type of diffusion, the stretching vibration proceeds and the length of the O-H bond is almost unchanged.The latter type of diffusion occurs frequently and quickly.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 66 (1), 8-10, 1997
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679159134080
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- NII Article ID
- 110001977985
- 210000100672
- 130004535893
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- NII Book ID
- AA00704814
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- BIBCODE
- 1997JPSJ...66....8S
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 4131702
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed