Preparation and characterization of NiCuZn ferrite nanocrystalline powders by auto-combustion of nitrate-citrate gels

被引：171
|
作者：
Yue, ZX [1 ]
Li, LT [1 ]
Zhou, J [1 ]
Zhang, HG [1 ]
Gui, ZL [1 ]
机构：
[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram Fine Proc, Beijing 100084, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1999年 / 64卷 / 01期
关键词：
auto-combustion; nanocrystalline particles; NiCuZn ferrite; sol-gel process;
D O I：
10.1016/S0921-5107(99)00152-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel nitrate-citrate gel process was used to synthesize NiCuZn ferrite powders. The thermal decomposition and combustion process of nitrate-citrate gels were investigated by using DTA-TG, IR spectra and XRD techniques. The results revealed that the nitrate-citrate gels exhibit self-propagating behavior after ignition in air at room temperature. NiCuZn ferrite powders with a particle size of 20-50 nm were directly formed after combustion. The ratio of metal nitrates to citric acid in the starting solution affects the combustion process, and then determines the particle size of the as-synthesized powder. The magnetic structure of powders was characterized using Mossbauer spectroscopy. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：68 / 72
页数：5
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