磁性Fe3O4纳米颗粒的可控制备及生长研究

摘要

The Fe3O4 nanoparticles were prepared by the hydrothermal method. Different morphologies and sizes of Fe3O4 nanostructures were obtained by carefully controlling the conditions. The structure and magnetic property of the powders were investigated by X-ray powder diffractometer(XRD), transmission electron microscopy(TEM)and vibrating sample magneto-meter(VSM) respectively. The result shows that the saturation magnetization values of the samples synthesized is 62. 5emu/g. The possible formation mechanism of Fe3O4 nanoparticles was discussed.%采用热法合成磁性Fe3O4纳米颗粒,通过精细调控实验条件能对其形状和大小进行有效控制.采用X射线衍射仪、透射电镜、振动样品磁强计等对Fe3O4纳米颗粒的成分、形貌及磁性等进行了表征测试.结果表明,Fe3O4纳米颗粒的饱和磁化强度为62.5emu/g.最后探讨了Fe3O4纳米颗粒的合成机理.