Effect of Al-doping on crystal structure and ionic conductivity of apatite-type La₉.₃₃₊x/₃Si₆₋xAl[x]O₂₆ solid electrolytes
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- UEDA Kou
- Graduate School of Science and Engineering, Ehime University
書誌事項
- タイトル別名
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- Effect of Al-doping on crystal structure and ionic conductivity of apatite-type La9.33+x/3Si6-xAlxO26 solid electrolytes
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La9.33+x/3Si6−xAlxO26 (0 ≤ x ≤ 2.0) sinters with an apatite-type crystal structure were synthesized by solid-state reaction at 1600°C for 5 h, and the sintered discs were examined by AC impedance analysis and X-ray Diffraction (XRD). The total conductivity was significantly increased with an increase in the Al-content and showed a maximum value for x = 1.5 (8.8 × 10−3 S cm−1 at 700°C). The crystal structure model can refine the profiles obtained by XRD with the P63 space group and the channel oxygen atoms were displaced from the ideal site at (0, 0, ≈0.25) with an increase in the Al-content and showed a maximum displacement for x = 1.5. These results show that the position of the channel oxygen atoms is the key parameter that governed the conductivity.
収録刊行物
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 120 (1398), 74-76, 2012
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390001205287338496
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- NII論文ID
- 130002067592
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- NII書誌ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL書誌ID
- 024029618
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可