Preparation and Magnetic Properties of Zinc Ferrite Nanoparticales

被引：0
|
作者：
Hu, Ping [1 ]
Pan, De-an [1 ]
Zhang, Shen-gen [1 ]
Tian, Jian-jun [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
PROCEEDINGS OF THE 7TH NATIONAL CONFERENCE ON CHINESE FUNCTIONAL MATERIALS AND APPLICATIONS (2010), VOLS 1-3 | 2010年
关键词：
nano-zinc ferrite; heat treatment; phase composition; paramagnetism; CATALYTIC-ACTIVITY; CONVERSION; POWDER;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZnFe(2)O(4) nanoparticles were prepared by the sol-gel auto-combustion method using nitrate as raw materials and citric acid as chelate additives. The results show that auto-combustion powders with the particle size of about 25 nm contain ZnO impurities uniform in both morphology and particle size. The particle sizes of annealed powder in air increase with the annealing temperature increase. Annealed powders have pure ZnFe(2)O(4) phase when annealing temperature is higher than 650 degrees C in air. Sample annealed at 1000 degrees C in air has fine paramagnetism which M(s)=2.569emu.g(-1) and M(r)=9.16X10(-3)emu.g(-1). It was an excellent paramagnetic nano-ferrite material.
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页码：564 / 566
页数：3
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