STUDIES ON FORMATION CONDITIONS OF PEROVSKITE-TYPE OXIDES LaNiO3 AND LaMnO3

被引：2

作者：

Hu Ruisheng ^{[1
]}

Shen Yuenian ^{[1
]}

Wang Hongyu ^{[1
]}

Sun Yong'an ^{[2
]}

Bai Yushan ^{[2
]}

机构：

[1] Inner Mongolia Univ, Hohhot 010021, Peoples R China

[2] Inner Mongolia Teachers Coll, Tongliao 028043, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 1993年 / 9卷 / 03期

关键词：

LaNiO3; LaMnO3; Peovskite-type crystal; X-ray powder diffraction; Thermoanalysis;

D O I：

10.3866/PKU.WHXB19930317

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single phase perovskite-type oxides, polycrystal powder LaNiO3 and LaMnO3, have been prepared by decomposing mixed nitrates and citric acid compexing methods respectively. X-ray powder diffraction analysis showed that the formation of LaNiO3 was caused by a solid reaction in which mixed oxides were converted into LaNiO3; while LaMnO3 was growing out of amorphous substance directly. By DTA, TG and IR etc. measurements, it was found that ion NO3- took part in the formation of LaNiO3 and LaMnO3. at the same time, the function of the complexing agent was discussed. Citric acid favors formation of single phase pevovskite-type oxides, especially in the case of LaMnO3.

引用

页码：382 / 385

页数：4