| Thermal Expansion Behavior of La1—xSrxMn1—yCoyO3—δ Perovskites |
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| 摘 要： | The thermal expansion behavior of La1-xSrxMn1-yCoyO3-δ (x=0.2-0.4, y=0.1-0.3) perovskites in air has been investigated. The average linear thermal expansion coefficients increased with increasing Sr content up to 40 mole fraction or Co content up to 30 mole fraction. The expansion is generally attributed to an increase in the average cation radius as some of the cations in the perovskite are reduced in valence when oxygen ions are removed from the structure.
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| 关 键 词： | 固相反应 固相合成 热膨胀行为 镧 锶 锰 钴 复合氧化物 钙钛矿结构 La1－xSrxMn1－yCoyO3－δ |
Thermal Expansion Behavior of La1-xSrxMn1-yCoyO3-d Perovskites |
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| Authors: | Wenhui MA Gang XIE Hua WANG |
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| Affiliation: | Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming, 650093, China |
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| Abstract: | The thermal expansion behavior of La1-xSrxMn1-yCoyO3-δ (x=0.2～0.4, y=0.1～0.3) perovskites in air has been investigated. The average linear thermal expansion coefficients increased with increasing Sr content up to 40 mole fraction or Co content up to 30 mole fraction. The expansion is generally attributed to an increase in the average cation radius as some of the cations in the perovskite are reduced in valence when oxygen ions are removed from the structure. |
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| Keywords: | Thermal expansion Solid reaction synthesis |
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