表面活性剂对CoFe_2O_4纳米颗粒结构和磁性的影响Effect of surface active agent on structure and magnetic properties of CoFe_2O_4 nanoparticles
刘梅;石丽佳;马跃;徐仕翀;李海波;
摘要(Abstract):
以1,2-十六烷二醇(HDD)作为表面活性剂,采用热分解方法制备CoFe_2O_4纳米颗粒。利用X射线衍射、透射电镜、振动样品磁强计对CoFe_2O_4纳米颗粒的结构、表面形貌和磁性进行分析,研究HDD对CoFe_2O_4纳米颗粒的结构和磁性的影响。结果表明,通过HDD的加入,可提高CoFe_2O_4纳米颗粒的分散性,调控CoFe_2O_4纳米颗粒的形状和尺寸。随着CoFe_2O_4纳米颗粒尺寸的减小,样品的矫顽力和饱和磁化强度降低。
关键词(KeyWords): CoFe2O4纳米颗粒;热分解法;表面活性剂;矫顽力;饱和磁化强度
基金项目(Foundation): 国家自然基金(21371071)
作者(Author): 刘梅;石丽佳;马跃;徐仕翀;李海波;
Email:
DOI: 10.14024/j.cnki.1004-244x.20170908.001
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