Low-Temperature Synthesis of Ultrafine La0.7Sr0.3MnO3Powder via Chelate Homogenization
作者： A. B. Antipov , A. N. Grigor'ev , A. V. Garshev , A. R. Kaul'
DOI: 10.1023/B:INMA.0000032003.23763.A6
关键词: Chemical engineering 、 Dehydration 、 Calcination 、 Chelation 、 Air drying 、 Oxygen 、 Homogenization (chemistry) 、 Materials science 、 Microwave 、 Particle size 、 Inorganic chemistry 、 Materials Chemistry 、 General Chemical Engineering 、 Metals and Alloys
摘要: Ultrafine La0.7Sr0.3MnO3 powders were prepared via homogenization in chelate solutions, followed by the calcination of solid precursors at 700°C air or oxygen, and their phase composition average particle size determined. The obtained from a solution polynuclear La, Sr, Mn chelates (diethylenetriaminepentaacetates) three procedures: (1) gelation solution, drying resultant gel; (2) microwave dehydration; (3) dehydration solution. results demonstrate that way which is converted into foams has little effect on powders. At same time, reaction products depend atmosphere (air oxygen). Calcination oxygen (700°C, 10 h) ensures preparation phase-pure powders, with an ≃30 nm, precursors.
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