| Item type |
文献 / Documents(1) |
| 公開日 |
2020-05-01 |
| アクセス権 |
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|
アクセス権 |
open access |
| 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 |
| 出版社版DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.ssi.2019.115213 |
|
|
言語 |
ja |
|
|
関連名称 |
10.1016/j.ssi.2019.115213 |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| タイトル |
|
|
タイトル |
Local structural changes in Ce1-xLnxO2-δ (Ln = La, Gd) solid electrolytes |
|
言語 |
en |
| 著者 |
Liu, Xue
ミナト, リュウノスケ
オオタニ, ヤスマサ
ハタイ, ケンゴ
村井, 啓一郎
モリ, マサシ
ヨシナリ, アツシ
ミヤノ, ムネヒコ
サカキ, アツシ
森賀, 俊広
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The local structural changes in La and Gd in doped ceria were investigated using the XAFS technique. In addition, Ce1-xLnxO2-δ (Ln = La, Gd; LDC) (0 ≤ x ≤ 0.5) was synthesized through a coprecipitation method and the local structures were analyzed based on the XAFS spectra for the first and second neighbor shells of the constituent cations. For these two types of materials, the variation in the coordination number of the Ln and Ce cations showed different trends as a function of the dopant concentration, x. For LDC, a local structural ordering was formed at x ≥ 0.3 similar to a pyrochlore-type structure, in which the oxygen vacancies are preferentially located adjacent to La3+. For Ce1-xGdxO2-δ (GDC), no distinct differences in the coordination number of the cations were observed.
The combined XAFS and XRD results successfully showed that the weighted average distances of the longer Ln-Ln (Ln = La for LDC and Ln = Gd for GDC) and shorter Ce-Ce at each composition, as obtained through XAFS analysis, fit extremely well with the lattice parameter obtained using XRD. A model of the local structural change was derived to explain the variation in the electrical conductivity during the early stage of Ln doping. |
|
言語 |
en |
| 書誌情報 |
en : Solid State Ionics
巻 347,
p. 115213,
発行日 2020-01-29
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| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
01672738 |
| 収録物ID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00443404 |
| 収録物ID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11541380 |
| 出版者 |
|
|
出版者 |
Elsevier |
|
言語 |
en |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| EID |
|
|
識別子 |
364107 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
ssi_347_115213.pdf (1.89 MB)
