| La1-xSrxCoO3系列化合物的高压合成与性质的研究 |
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| 引用本文： | 张进龙,周建十,苏文辉.La1-xSrxCoO3系列化合物的高压合成与性质的研究[J].高压物理学报,1988,2(1). |
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| 作者姓名： | 张进龙 周建十 苏文辉 |
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| 作者单位： | 吉林大学固体物理教研室和稀土固体物理研究室
(张进龙，周建十)，吉林大学固体物理教研室和稀土固体物理研究室(苏文辉) |
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| 摘 要： | 本文首次用高压手段合成出La1-xSrxCoO3（x=0.0、0.2、0.3、0.4、0.6、0.8和1.0）化合物系列，最佳合成条件为2.6 GPa/1 050 ℃/40 min。通过对其结构相变与畸变程度、氧缺位问题的研究以及价态变化的讨论，得出了高压减小畸变量、增加氧缺位数并导致一部分低价态Co离子出现的结论。还讨论了上述诸因素对电导率和催化性能等的影响。
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| 关 键 词： | La1-xSrxCoO3 高压合成 畸变 相变 氧缺位 |
| 收稿时间： | 1987-09-19; |
A STUDY ON HIGH-PRESSURE SYNTHESES AND PROPERTIES OF La1-xSrxCoO3 SERIES |
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| Zhang Jinlong Zhou Jianshi Su Wenhui.A STUDY ON HIGH-PRESSURE SYNTHESES AND PROPERTIES OF La1-xSrxCoO3 SERIES[J].Chinese Journal of High Pressure Physics,1988,2(1). |
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| Authors: | Zhang Jinlong Zhou Jianshi Su Wenhui |
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| Institution: | Research Group of Rare Earth Solid State Physics, Jilin University, Changchun 130023, China |
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| Abstract: | By using the high-pressure method for the first time, the series of compounds La1-xSrxCoO3 (x=0.0, 0.2, 0.3, 0.4, 0.6, 0.8 and 1.0) have been synthesized at the condition of 2.6 GPa/1 050 ℃/40 min. After the study of their structure transformation, distortions and oxygen vacancies and the discussion of Valence changes, the conclusion that high pressure decreases the oxygen vacancy and results in some Co ions in low valence state hase been obtained. The effects of the factors mentioned aboved on the properties of electric conductivity and catalysis have also been discussed. |
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| Keywords: | La1-xSrxCoO3 high pressure synthesis distortion structure transformation oxygen deficiency |
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