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Valence Electron and Chemical State Analysis of Be12M (M = Ti, V) Beryllides by Soft X-ray Emission Spectroscopy
https://repo.qst.go.jp/records/76374
https://repo.qst.go.jp/records/763740816b7d5-04c5-40be-aed2-ceef67fab794
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-07-29 | |||||
| タイトル | ||||||
| タイトル | Valence Electron and Chemical State Analysis of Be12M (M = Ti, V) Beryllides by Soft X-ray Emission Spectroscopy | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Mukai, Keisuke
× Mukai, Keisuke× Kasada, Ryuta× Yabuuchi, Kiyohiro× Konishi, Satoshi× Kim, Jaehwan× Nakamichi, Masaru× Kim, Jaehwan× Nakamichi, Masaru |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Be-rich intermetallics (beryllides) have gathered wide attentions to be adopted for high temperature environments, such as an advanced neutron multiplier in fusion reactors. This study reveals the valence electron structure of Be12M (M = Ti,V) by using soft X-ray emission spectroscopy with ultrahigh resolution (∼0.22 eV). The Be–Kα spectra from the Be12M phases show significantly lower densities of the occupied states near the Be–K edge than thaose of metallic beryllium. Theoretical calculations indicate that changes in the valence electron structure are derived from the large downward shift of the Fermi level in Be12M, by at least 0.8 eV. Based on the knowledge of the valence electron structures and the chemical shift, chemical state mappings of BeO and Be12V in the oxidized beryllide specimen were successfully obtained. The approach is applicable for visualization and identification of metallic/oxidized phase in light-element compounds by electron microscope. | |||||
| 書誌情報 |
ACS Applied Energy Materials 巻 2, 号 4, p. 2889-2895, 発行日 2019-07 |
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| 出版者 | ||||||
| 出版者 | ACS Publications | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2574-0962 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1021/acsaem.9b00223 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://pubs.acs.org/doi/10.1021/acsaem.9b00223 | |||||
