Synthesis of pure and doped LaMnO3 powders from citrate precursors

被引：3

作者：

Djuris, K. ^{[1
]}

Brankovic, G. ^{[1
]}

Brankovic, Z. ^{[1
]}

Bernik, S. ^{[2
]}

Pocuca, M. ^{[1
]}

Poleti, D. ^{[3
]}

Antic, B. ^{[4
]}

机构：

[1] Ctr Multidisciplinary Studies, Kneza Viseslava 1, Belgrade 11000, Serbia

[2] Jozef Stefan Inst, Ljubljana, Slovenia

[3] Fac Technol & Met, Belgrade 11000, Serbia

[4] Vinca Inst Nucl Sci, Solid State Phys Lab, Belgrade 11000, Serbia

来源：

RESEARCH TRENDS IN CONTEMPORARY MATERIALS SCIENCE | 2007年 / 555卷

关键词：

lanthanum manganite; microstructure; pechini method; powders;

D O I：

10.4028/www.scientific.net/MSF.555.237

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work pure and doped LMO were prepared using modified Pechini method from lanthanum and manganese citrates. Lanthanum citrate was prepared starting from La2O3, while manganese citrate was prepared from Mn(NO3)(2). Valence state of the manganese was controlled by adjusting pH value of the solution and confirmed by EPR and UV/VIS analysis. Thermal treatment conditions for preparation of LMO powders were determined from TG/DTA of dried precursors. XRD results confirmed that pure perovskite phase was successfully prepared in single LMO and Ca-doped LMO. SEM and measurements of specific surface area of the powders showed the existence of large agglomerates consisting of submicronic primary particles.

引用

页码：237 / +

页数：2

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