高分散度Fe_3O_4纳米球的粒径控制合成及磁性能  

Size-controlled synthesis and magnetic properties of high-dispersed Fe_3O_4 nanospheres

作　　者：李小东[1] 郭新春[2] 刘浩梅[3] 刘跃军[1] 范淑红[1] 颜爱国[1] 

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007 [2]井冈山大学化学化工学院,江西吉安343009 [3]湖南工业大学电气与信息学院,湖南株洲412007

出　　处：《功能材料》2009年第7期1233-1236,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(10672197);湖南省杰出青年基金资助项目(07JJ1001);印刷工程国家特色专业资助项目(TS10433)

摘　　要：采用CTAB作保护剂,在较低温度下,成功地制备出高分散度的Fe3O4纳米材料。通过改变反应条件和保护剂的种类,可在20～360nm范围内有效调控Fe3O4纳米颗粒的粒径。利用X射线衍射仪、透射电子显微镜和扫描电子显微镜等对样品的晶体结构、粒径、形貌和化学组成进行了分析。结果表明:所得Fe3O4纳米晶的粒径均匀,形貌为球形,分散度好。利用振动样品磁强计测量了室温下140nm粒径样品的磁性能。结果表明,Fe3O4纳米材料具有典型的软磁特性。High-dispersed Fe3 04 nanoparticles were successfully fabricated by using the surfactants of CTAB as protective reagents at lower temperature. The sizes of the nanoparticles can be varied from 20 to 360nm by adjusting the experimental conditions and changing protecting agents. The structure, size and morphology of the products were investigated in detail by X-ray diffraction （XRD）,transmission electron microscopy （TEM）,and scanning electron microscopy （SEM）. The results indicate that uniform Fe3O4 nanospheres were achieved. The magnetic properties of the 140nm sample was investigated with a vibrating sample magnetometer at room temperature and revealed that Fe3O4 nanomaterials are typical soft magnet.

关 键 词：高分散度 Fe3O4纳米球 溶剂热 粒径控制 

分 类 号：O614[理学—无机化学]