摘要
采用sol-gel方法制备了纳米晶Co1-xZnxFe2O4（x=0-0.3）薄膜。样品的结构、磁性及表面形貌分别用X射线衍射仪（XRD）、振动样品磁强计（VSM）和原子力显微镜（AFM）进行了表征。研究结果表明,400℃退火薄膜已生成单一的尖晶石结构,且样品的晶粒尺寸较小,平均晶粒尺寸在35nm以下。Zn^2＋离子含量的增加使样品的晶格常数有少许增大。Zn^2＋离子含量对样品的磁性能有较强的影响,样品的比饱和磁化强度在Zn^2＋离子含量x=0.2时达极大值（74.3（A·m^2）/kg）。变温测量显示,样品的磁化强度随温度升高呈下降趋势。当Zn^2＋含量从零增加到0.3,居里温度从530.0℃降至341.6℃。
Co1-x ZnxFe2O4 （x= 0. 0 to 0. 3） nanocrystalline ferrite films have been synthesized by the sol-gel process. The microstructure, magnetic properties, and surface image of samples have been measured and analyzed by X-ray diffractometer and vibrating sample magnetometer and atomic force microscope. The results reveal that the samples annealed at 400℃ have a spinel single-phase. The average grain sizes of samples are smaller than 35nm. The lattice constants increase a bit with increasing Zn^2＋ content. The magnetic properties are influenced strongly by Zn^2＋ content. The saturation magnetization reaches its highest value 74.3（A · m^2）/kg when x=0.2. The measurements at high temperature show that the saturation magnetization decrease with increasing temperature and the Curie temperature decreases from 530.0 to 341.6℃ while Zn^2＋ content increases from 0.0 to 0.3.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第5期829-832,共4页
Journal of Functional Materials
基金
安徽省2005年度重点科研资助项目(05022045)
安徽省教育厅青年教师基金资助项目(05010210)
作者简介
通讯作者：李雁 李雁（1967-），女，安徽合肥人，讲师，在读博士，师承方庆清教授，从事磁记录材料的研究。
