Pure and doped lanthanum manganites obtained by combustion method

被引：42

作者：

Berger, D.

Matei, C.

Papa, F.

Macovei, D.

Fruth, V.

Deloume, J. P.

机构：

[1] Politehnica Univ Bucharest, Bucharest 011061, Romania

[2] Romanian Acad, Inst Phys Chem, Bucharest, Romania

[3] Natl Inst Mat Phys, RO-76900 Bucharest, Romania

[4] Univ Lyon, CNRS, UMR 5256, IRCELYON, F-69626 Villeurbanne, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2007年 / 27卷 / 13-15期

关键词：

nanomaterials; perovskites; powders-chemical preparation; manganites;

D O I：

10.1016/j.jeurceramsoc.2007.02.164

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Pure and strontium-doped lanthanum manganite nanopowders were obtained by solution combustion method using metal nitrates as oxidants and different organic compounds as fuel (alpha-alanine, glycine, urea and semioxamazide). Different molar ratios, fuel/oxidant, were chosen to study the effect of the fuel content on the phase formation and powder properties. The complex precursors isolated before ignition of the system, were characterized by FT-IR spectroscopy and thermal analysis. After ignition, the as-synthesized powders were calcined at different temperatures for obtaining single phases. Lanthanum manganite powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), specific surface area and magnetic measurements. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：4395 / 4398

页数：4

共 16 条

[1] Physicochemical and catalytic properties in methane combustion of La1-xCaxMnO3±y (0≤X≤1; -0.04≤y≤0.24) [J].