采用聚合－热解法制备了Co0.2Zn0.2Mn0.6Fe2O磁性纳米颗粒, 借助热重分析法(TG)、X射线衍射(XRD)、透射电镜(TEM)和振动样品磁强计(VSM)对产物进行了表征. 结果表明, 产物具有尖晶石结构,无杂相, 粒径分布范围在8-15 nm之间. 常温下该材料的剩磁强度和矫顽力分别为0.516和2.388 kA/m
Co0.2Zn0.2Mn0.6Fe2O4 nanoparticles were prepared through the pyrolysis of polyacrylate salt precursors prepared via in situ polymerization of the metal salts and acrylate acid. The pyrolysis behavior of the polymeric precursors was studied by use of thermal analysis. The structural characteristics of the as-calcined products was analyzed by powder X-ray diffraction (XRD), transmission electron microscope (TEM) and electron diffraction (ED) pattern. The results revealed that the spinel ferrites had nanosized morphology and good crystallinity. Magnetic properties of the samples at room temperature were measured using a vibrating sample magnetometer (VSM), showing that the sample exhibited characteristics of weak ferromagnetism.
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