Preparation and Ionic Conductivity of Al-Doped Mg0.5Ti₂(PO₄)₃
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- Takahashi Hiroo
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Takamura Hitoshi
- Department of Materials Science, Graduate School of Engineering, Tohoku University
書誌事項
- タイトル別名
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- Preparation and Ionic Conductivity of Al-Doped Mg<sub>0.5</sub>Ti<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>
- 公開日
- 2012
- DOI
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- 10.2320/matertrans.mbw201111
- 公開者
- 公益社団法人 日本金属学会
この論文をさがす
説明
Al-doped Mg0.5(1+x)AlxTi2−x(PO4)3 has been prepared by a sol–gel method and the conductivity has been evaluated by an ac impedance method to determine the optimum lattice volume for Mg-ion conduction. Instead of using Ti in the samples, 10–15 mol%Al was used, resulting in lattice contraction in the c-axis direction. The samples, sintered at 500–800°C for 12 h by a reaction sintering method, had a relative density of 70–80% and their grain size was 2–3 µm. The ionic conductivity calculated from the grain and grain boundary resistance at 600°C was 7.1 × 10−5 and 1.3 × 10−5 S/cm, respectively. The activation energy of the grain conductivity was 128 kJ/mol in the temperature range of 300 to 600°C. By comparing ionic conductivity of various-doped titanium phosphates, optimum lattice volume was estimated to be 1.304 nm3.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 53 (5), 932-935, 2012
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679226505728
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- NII論文ID
- 10030629594
- 130004824838
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BC38XhtVansbjF
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 023602485
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- 本文言語コード
- en
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