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Investigation of time variations of redox reactions in SrRuO3 through interface-sensitive resistance measurements
http://hdl.handle.net/10091/0002001426
http://hdl.handle.net/10091/0002001426aca3e918-3993-473e-bf78-ab93b3792c96
| 名前 / ファイル | ライセンス | アクション |
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JAP133-125306.pdf
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2023-03-30 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Investigation of time variations of redox reactions in SrRuO3 through interface-sensitive resistance measurements | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| DOI | ||||||||||||
| 関連タイプ | isVersionOf | |||||||||||
| 関連識別子 | https://doi.org/10.1063/5.0135695 | |||||||||||
| 関連名称 | 10.1063/5.0135695 | |||||||||||
| 資源タイプ | ||||||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| タイプ | journal article | |||||||||||
| 著者 |
Kambara, Hiroshi
× Kambara, Hiroshi
× Shimazaki, Hiroshi
× Tenya, Kenichi
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| 信州大学研究者総覧へのリンク | ||||||||||||
| 氏名 | 神原, 浩 | |||||||||||
| URL | https://soar-rd.shinshu-u.ac.jp/profile/ja.HNnUWhLp.html | |||||||||||
| 信州大学研究者総覧へのリンク | ||||||||||||
| 氏名 | 天谷, 健一 | |||||||||||
| URL | https://soar-rd.shinshu-u.ac.jp/profile/ja.WanUPFSp.html | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | American Institute of Physics | |||||||||||
| 引用 | ||||||||||||
| 内容記述 | Journal of Applied Physics 133 : 125306, (2023) | |||||||||||
| 書誌情報 |
Journal of Applied Physics 巻 133, p. 125306, 発行日 2023-03-29 |
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| 抄録 | ||||||||||||
| 内容記述 | We used an interface-sensitive resistance measurement technique to observe the time evolution of the early stages of redox reactions at the interface between the metallic oxide SrRuO3 and a silver epoxy electrode at around room temperature (～280–320 K). On exposure to a reducing gas (CO or H2), the interface resistance gradually increased. The time variation functions of the resistance increases for CO and H2 were similar, although the magnitude was greater for H2 than for CO. After substitution of O2 for the reducing gas, the interface resistance decreased to almost the initial value, i.e., that before exposure to a reducing gas. The resistance variations can be well explained by the time variations of the oxygen deficiency at the SrRuO3 interface and subsurfaces as a result of reduction or oxidation. We regarded the reactions as pseudo-first-order reactions and evaluated the rate constants of the SrRuO3 redox reactions at a SrRuO3–Ag interface. For the reduction (resistance increase) process, a single exponential component was enough to fit the data, which suggests that the reduction proceeds successively from outside to inside the bulk. Adsorption of oxygen atoms in the oxidation (resistance decrease) process involved several rate constants, at least up to three exponential components, depending on the prior degradation by a reducing gas. The effective activation energy of each redox reaction was evaluated from an Arrhenius plot. | |||||||||||
| 資源タイプ（コンテンツの種類） | ||||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||
| 収録物識別子 | 0021-8979 | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AA00693547 | |||||||||||
| 権利 | ||||||||||||
| 権利情報 | © 2023 Author(s). Published under an exclusive license by AIP Publishing. | |||||||||||
| 出版タイプ | ||||||||||||
| 出版タイプ | AM | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||
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Cite as
Kambara, Hiroshi, Shimazaki, Hiroshi, Tenya, Kenichi, 2023, Investigation of time variations of redox reactions in SrRuO3 through interface-sensitive resistance measurements: American Institute of Physics, 125306– p.
