The effect of reaction temperature on the particle size, structure and magnetic properties of coprecipitated CoFe2O4 nanoparticles

被引：368
作者：
Qu, Yuqiu
Yang, Haibin [1 ]
Yang, Nan
Fan, Yuzun
Zhu, Hongyang
Zou, Guangtian
机构：
[1] Jilin Univ, Natl Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Henan Polytech Univ, Sch Mat Sci & Engn, Jiaozuo 454003, Peoples R China
来源：
MATERIALS LETTERS | 2006年 / 60卷 / 29-30期
关键词：
cobalt ferrite; nanoparticles; coprecipitation; magnetic properties; coercivity;
D O I：
10.1016/j.matlet.2006.03.055
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic nanoparticles of cobalt ferrite have been synthesized at different temperatures without any subsequent heat treatment. The particle size, crystal structure and magnetic properties of as-synthesized particles were investigated by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, Raman spectroscopy and vibrating sample magnetometer. The nanoparticles are of cubic spinel structure and equiaxial shape. The average size of nanoparticles increases with the increase of reaction temperature. Magnetic properties of nanoparticles show strong dependence on the particle size. A maximum coercivity of 3267 Oe and a maximum remanence ratio of 0.58 are obtained from the sample synthesized at 80 degrees C. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：3548 / 3552
页数：5
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