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1、磁场退火对 CoFe2O4 微粒形貌及磁性能的影响刘红艳 ;訾振发 ;刘强春 ;戴建明°C and field【期刊名称】磁性材料及器件 【年(卷),期】2011(042)001 【摘要】 CoFe2O4 particles were prepared using chemical precipitation route followed by magnetic annealing at temperature of 800 of 0.1T and 0.5T, respectively. The effects of magnetic field annealing on the m
2、orphology and magnetic properties of the samples were systematically studied. The results of X-ray diffraction (XRD) and scanning electron microscopy (SEM) showed that magnetic annealing improves the crystallinity, and resulted in the formation of regular spheral CoFe2O4 particles. Magnetic measurem
3、ents suggested that the antisite defects of magnetic annealed samples decreases, which results in enhancement of saturation magnetization (Ms) with increasing annealing magnetic field.% 采用化学共沉淀法合成材料 ,分别在 0.1T 和 0.5T 的磁场下800 C退火制备了 CoFe2O4颗粒样品,系统研究了磁场退火对样品形 貌和磁性能的影响.X射线衍射(XRD)谱和扫描电子显微镜(SEM)分析结果表明, 磁场退火后样品结晶度变好 ,因磁场诱导而生成较圆润的圆形颗粒 .磁测量结果表 明,磁场下退火制备的样品反位缺陷减少 ,从而导致饱和磁化强度随退火磁场的增 强而增大 .【总页数】 3 页(27-28,55)关键词】 CoFe2O4; 磁场退火 ;形貌;饱和磁化强度