Acta Phys. -Chim. Sin. ›› 1993, Vol. 9 ›› Issue (03): 382-385.doi: 10.3866/PKU.WHXB19930317
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Hu Rui-Sheng; Shen Yue-Nian; Wang Hong-Yu; Sun Yong-An; Bai Yu-Shan
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Abstract: Single phase perovskite-type oxides,polycrystal powder LaNiO_3 and LaMnO_3, have been prepared by decomposing mixed nitrates and citric acid compexing methods respectively. X-ray powder diffraction analysis showed that the formation of LaNiO_3 was caused by a solid reaction in which mixed oxides were converted into LaNiO_3; while LaMnO_3 was growing out of amorphous substance directly. By DTA, TG and IR etc. measurements, it was found that ion NO_3- took part in the formation of LaNiO_3 and LaMnO_3. At the same time, the function of the complexing agent was discussed. Citric acid favors fomation of single phase pevoskite-type oxides, especially in the case of LaMnO_3.
Key words: LaNiO3, LaMnO3, Peovskite-type crystal, X-ray powder diffraction, Thermoanalysis
Hu Rui-Sheng; Shen Yue-Nian; Wang Hong-Yu; Sun Yong-An; Bai Yu-Shan. Studies on Formation Conditions of Perovskite-type Oxides LaNiO3 and LaMnO3[J].Acta Phys. -Chim. Sin., 1993, 9(03): 382-385.
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URL: http://www.whxb.pku.edu.cn/EN/10.3866/PKU.WHXB19930317
http://www.whxb.pku.edu.cn/EN/Y1993/V9/I03/382
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