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Citation: 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 Physico-Chimica Sinica, ;1993, 9(03): 382-385. doi: 10.3866/PKU.WHXB19930317 shu

Studies on Formation Conditions of Perovskite-type Oxides LaNiO₃ and LaMnO₃

1.
Inner Mon lia University, Hohhot 010021; Inner Mon lia Teachers' College, Tongliao 028043

Received Date: 14 December 1991
Available Online: 15 June 1993

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.
- LaNiO₃; LaMnO₃; Peovskite-type crystal; X-ray powder diffraction; Thermoanalysis
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Studies on Formation Conditions of Perovskite-type Oxides LaNiO3 and LaMnO3

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Studies on Formation Conditions of Perovskite-type Oxides LaNiO₃ and LaMnO₃