| 反应条件对CoFe2O4颗粒形貌、粒径大小和磁性的影响 |
| |
| 引用本文： | 吴娟,霍德璇,金尧,吕燕飞.反应条件对CoFe2O4颗粒形貌、粒径大小和磁性的影响[J].纳米科技,2008,5(4):50-54. |
| |
| 作者姓名： | 吴娟 霍德璇 金尧 吕燕飞 |
| |
| 作者单位： | 杭州电子科技大学材料物理研究所,浙江杭州310018 |
| |
| 基金项目： | 2007浙江省新苗人才计划项目（2007R40G2040091） |
| |
| 摘 要： | 以FeSO4（NH4）2SO4、6H2O、CoCl2·6H2O、C6H5Na3O7·2H2O为前驱物，采用水热法合成了钴铁氧体CoFe2O4。用XRD、TEM、VSM分别测试了CoFe2O4颗粒大小、形貌、饱和磁化强度和矫顽力，探讨了反应时间、温度、溶质浓度、酸碱环境对颗粒粒径大小、形貌及其磁性能的影响。结果表明，适度的减短反应时间、降低温度、选取合适的溶质浓度和NaOH溶液浓度，可以得到粒径小、形貌统一的纳米颗粒，并且有助于增大CoFe2O4颗粒的饱和磁化强度。
|
| 关 键 词： | CoFe2O4颗粒 水热合成 饱和磁化强度 矫顽力 |
Effect of Reaction Condition on the Particle Size,Shape and Magnetic Properties of CoFe2O4 Nanoparticles |
| |
| Affiliation: | WU Juan, HUO De-xuan, JIN Yao, LU Yan-fei ( Institute of Materials Physics, Hangzhou Dianzi University, Hangzhou 310018, China) |
| |
| Abstract: | Nanocrystalline CoFe2O4 powders have been synthesized by hydrothennal treatment with precursors of Fe3O4 （NH4）2SO4·6H2O, CoCl2·6H2O and C6H5Na3O7·2H2O. The particle size, crystal shape, saturation magnetization and coercivity of as-synthesized particles were investigated by X-ray diffraction, transmission electron microscopy and vibrating sample magnetometer. The result indicated that to shorten the reaction time, lowed the reaction temperature properly and chose proper concentration of solute and NaOH solution can obtain nanoparticles of same size and shape, and were also helpful to increase the saturation magnetization of CoFe2O4 nanoparticles . |
| |
| Keywords: | CoFe2O4 nanoparticles hydrothermal treatment saturation magnetization coercivity |
| 本文献已被 维普 等数据库收录！ |
