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Fe3O4是一种重要的磁性材料.由于其独特的光、电、磁、热等性能而备受关注.在本文中,我们采用水热溶剂热法合成了Fe3O4磁性纳米粒子.利用X-射线衍射仪(XRD)、场发射扫描电子显微镜(FESEM)和振动样品磁强计(VSM)对产物的结构、形貌及磁性能进行了研究.结果表明,通过前驱物的适当选择,可以实现Fe3O4纳米粒子的可控合成,我们获得了球形、四方体形及棒形等不同形貌的具有尖晶石结构的Fe3O4纳米粒子.磁测量结果分析表明,形貌不同的Fe3O4纳米粒子其磁性能也有所不同.棒形和四方体形貌的Fe3O4纳米粒子的饱和磁化强度都比球形Fe3O4纳米粒子的饱和磁化强度高,其中纳米棒的最高.四方体形Fe3O4纳米粒子的矫顽力明显高于其他形貌的Fe3O4纳米粒子.
Fe3O4 is a kind of important magnetic material, which attracts much attention due to its unique properties of light, electricity, magnetism and heat etc. In this paper, we synthesize Fe3O4 magnetic nanoparticles by hydrothermal solvothermal method.Using X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and vibrating sample magnetometer (VSM) were used to study the structure, morphology and magnetic properties of the product.The results show that the proper choice of the precursor can be achieved Fe3O4 nano The controllable synthesis of particles, we obtained spherical, tetragonal and rod-shaped spheroidal Fe3O4 nanoparticles with different morphologies.Magnetic measurement results show that the morphology of different Fe3O4 nanoparticles have different magnetic properties The saturation magnetization of Fe3O4nanoparticles with rod-shaped and tetragonal morphology is higher than that of spherical Fe3O4nanoparticles, and the coercivity of the tetragonal Fe3O4nanoparticles is obviously higher than that of other morphologies Fe3O4 nanoparticles.