SYNTHESIS, MICROSTRUCTURE AND THE CRYSTALLINE STRUCTURE OF THE BARIUM TITANATE CERAMICS DOPED WITH LANTHANUM

被引：10
|
作者：
Wodecka-Dus, B. [1 ]
Plonska, M. [1 ]
Czekaj, D. [1 ]
机构：
[1] Univ Silesia, Dept Mat Sci, PL-41200 Sosnowiec, Poland
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2013年 / 58卷 / 04期
关键词：
Ba1-xLaxTi1-x/4O3; ceramics; La3+ doping; microstructure; perovskites;
D O I：
10.2478/amm-2013-0163
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In the present study BaTiO3 and Ba1-xLaxTiO3 (0.1-0.4mol.% La) ceramic powders were synthesized by the conventional mixed oxide method (MOM). The characterization of the ceramic powders was carried out using a simultaneous thermal analysis (STA), with a combined DTA/TG/DTG system (Netzsch STA409). The results of thermal analysis allowed to determine the optimal temperature of synthesis. Microstructure was investigated by scanning electron microscopy (SEM), crystalline structure was studied by X-ray diffraction method (XRD). The EDS investigations showed that samples exhibited conservation of stoichiometry according to the chemical composition formula. The X-ray diffraction analysis confirmed formation of the desired crystalline structure both pure and La3+-doped BaTiO3 ceramics exhibiting a perovskite-type structure ABO(3) with tetragonal symmetry P4 mm.
引用
收藏
页码：1305 / 1308
页数：4
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