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磁场下水热制备CuFe2O4纳米粒子及其磁性研究

发表时间:2012-05-15  浏览量:1162  下载量:547
全部作者: 刘刚,吴明在,刘艳美,杜显振,马永青,刘先松
作者单位: 安徽大学物理与材料科学学院
摘 要: 在外加磁场诱导下,采用水热处理工艺,以CuCl2·2H2O和FeCl3·6H2O为反应前驱物制备出尖晶石结构CuFe2O4粒子。采用X射线衍射(X-ray diffraction,XRD)、场发射扫描电子显微镜(field emission scanning electron microscope,FESEM)、振动样品磁强计(vibrating sample magnetometer,VSM)对粒子的结构、形貌和磁性进行研究。结果表明:合成过程中引入磁场不仅对合成粒子的结晶学取向、晶粒尺寸和粒子的分散性有影响,而且使得粒子的饱和磁化强度明显降低。而经退火处理后,加场和不加场得到的粒子饱和磁化强度均大幅提高。
关 键 词: 材料物理与化学;铁氧体;磁场;水热;退火
Title: Hydrothermal preparation of CuFe2O4 nanoparticles in the magnetic field and the study of their magnetic behavior
Author: LIU Gang, WU Mingzai, LIU Yanmei, DU Xianzhen, MA Yongqing, LIU Xiansong
Organization: School of Physics, Anhui University
Abstract: In the presence of applied magnetic field, Spinel structure CuFe2O4 particles were prepared by hydrothermal process using CuCl2 �H2O and FeCl3�H2O as starting materials. X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and vibrating sample magnetometer (VSM) were carried out to investigate their structures, morphologies and magnetic properties. The result demonstrates that the introduction of magnetic field during synthesis process could not only influence on the crystallographic orientation, crystalline size and particles dispersion, but also reduce the saturation magnetization significantly. And after annealing treatment, the saturation magnetizations of particles are greatly improved in magnetic field or not.
Key words: material physics and chemistry; ferrite; magnetic field; hydrothermal; annealing
发表期数: 2012年5月第9期
引用格式: 刘刚,吴明在,刘艳美,等. 磁场下水热制备CuFe2O4纳米粒子及其磁性研究[J]. 中国科技论文在线精品论文,2012,5(9):830-834.
 
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