| Preparation and Electrical Transport Properties of Perovskite Oxide Ln0.5Sr0.5CoO3 |
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| 作者姓名： | Zhu Zhiqiang Ding Tiezhu Zhao Qian Zhang Liwen Wang Qiang |
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| 作者单位： | Department of Physics, Inner Mongolia University, Huhhot 010021, China |
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| 摘 要： | The superfine powders of Ln0.5 Sr0.5 CoO3 （Ln = La, Pr, Nd, Sm, Eu） were obtained by solid state reactions. The crystal structure and electrical transport properties of samples doped with different rare earth elements as well as the forming process of the Perovskite structure were studied. The result shows that when the temperature reaches 1200 ℃, the samples will become a steady and unitary Perovskite phase by solid state reactions. The conductive behavor at low temperature is consistent with small polaron mechanism （i. e., localized electronic carriers having a thermally activated mobility）. However, the maximum of conductivity appears at about 700 ℃, and the conductivity of La0.5Sr0.5CoO3 is the biggest in the intermediate-temperature （600 - 850 ℃ ）, so it is fit for cathode material of intermediate-temperature solid oxide fuel cells.
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| 关 键 词： | Ln0.5Sr0.5CoO3 钙钛矿氧化物 晶体尺寸 电子输运 稀土 |
Preparation and Electrical Transport Properties of Perovskite Oxide Ln0.5Sr0.5CoO3 |
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| Zhu Zhiqiang Ding Tiezhu Zhao Qian Zhang Liwen Wang Qiang.Preparation and Electrical Transport Properties of Perovskite Oxide Ln0.5Sr0.5CoO3[J].Journal of Rare Earths,2006,24(4):465-465. |
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| Authors: | Zhu;Zhiqiang;Ding;Tiezhu;Zhao;Qian;Zhang;Liwen;Wang;Qiang |
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| Abstract: | |
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| Keywords: | Ln0 5Sr0 5CoO3 oxide of Perovskite electrical transport properties average crystal size rare earths |
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