Synthesis of NiCuZn ferrite nanoparticles and microwave absorption characterization

被引：24
|
作者：
Lima, U. R. [1 ]
Nasar, M. C. [1 ]
Nasar, R. S. [1 ]
Rezende, M. C. [2 ]
Araujo, J. H. [3 ]
Oliveira, J. F. [1 ]
机构：
[1] Univ Fed Rio Grande do Norte, Dept Quim, BR-59078970 Natal, RN, Brazil
[2] CTA, IAE, Div Mat, BR-12228904 Sao Jose Dos Campos, SP, Brazil
[3] Univ Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59078970 Natal, RN, Brazil
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2008年 / 151卷 / 03期
关键词：
Magnetic materials; Chemical synthesis; X-ray diffraction; Electron microscopy; Magnetic properties;
D O I：
10.1016/j.mseb.2008.06.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study aimed at the low temperature synthesis of NixCu0.5-xZn0.5Fe2O4 ferrite nanoparticles using the citrate precursor method and the reflectivity characterization of Radar absorbing materials. The NiCuZn phase obtained at 350 degrees C by the Rietveld method showed homogeneous nanoparticle formation. The analysis of particle size and the critical diameter of the domains indicated monodomain formation on nanometric scale. Vibrating sample magnetometry showed that adding copper to NiZn ferrite decreases magnetization saturation and the calcining temperature. Reflectivity measures taken by the wave guide method, obtained absorption radiation of 96.6% for x = 0.3 at 12 GHz. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：238 / 242
页数：5
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