摘要
采用水热法制备了不同镍锌比的纳米NixZn1-xFe2O4粉体。采用X射线衍射、透射电镜(TEM)、振动样品磁强计(VSM)等方法对制备的样品进行了表征,物相分析结果表明,在200℃水热5 h可以得到纯的纳米NiFe2O4粉体,在200℃水热5 h制备的Ni0.5Zno.5Fe2O4中含有γ-Fe2O3,在220℃水热5 h可以得到纯Ni0.5Zn0.5Fe2O4纳米粉体。水热温度为220℃时制备的ZnFe2O4中仍然存在γ-Fe2O3。TEM结果表明,NixZn1-xFe2O4粒子为球形,粒径为10～20 nm。磁滞回线结果表明纳米NixZn1-xFe2O4具有较好的磁性能,其中Ni0.5Zn0.5Fe2O4纳米粒子具有最大的饱和磁化强度(Ms),ZnFe2O4具有最大的矫顽力(Hc)值。
The nanosized NixZn1-xFe2O4 particles were synthesized by hydrothermal method. The as-synthesized powder was characterized by X-ray powder diffraction （XRD）, transmission electron microscopy （TEM） and vibrating sample magnetometer （VSM）. Pure NiFe2O4 powders were prepared at 200℃ for 5 h, and pure Ni0.5Zn0.5Fe2o4 powder could be obtained at 220℃ for 5 h. The γ-Fe2o3 phase existed in the ZnFe204 powder when the hydrothermal temperature was 220 ℃. The TEM results showed that NixZn1-xFe2o4 nanoparticles was round, and the size of them was 10-20 nm. A test of magnetic properties indicates that the NixZn1-xFe2O4 is a soft magnetic material with good magnetic property, Ni0.5Zn0.5Fe2O4 nanoparticles show the largerest saturated magnetization, while ZnFe2O4 exhibits the highest coercive.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第A02期473-476,共4页
Rare Metal Materials and Engineering
