摘 要: 采 用 低 温 固 相 反 应 法 合 成 了 CoFe₂O₄、ZnFe₂O₄ 和 Co_0.5Zn_0.5Fe₂O₄ 纳米粉体。以 NH₄HCO₃ 和金属盐为原料, 生成了前驱体碱式碳 酸盐, 通过研究不同焙烧温度, 并在最佳焙烧温度下得到了 CoFe₂O₄、 ZnFe₂O₄ 和 Co_0.5Zn_0.5Fe₂O₄ 纳 米 粉 体。经 X 射 线 衍 射( XRD) 、热 分 析 ( TG- DSC) 、透射电子显微镜( TEM) 、振动样品磁强计( VSM) 等测试 手段的分析, 结果表明: 低温固相反应法能够合成出单相的 CoFe₂O₄、 ZnFe₂O₄ 和 Co_0.5Zn_0.5Fe₂O₄ 纳米粉体。 

关键词: 低热固相反应法; 铁氧锌; 纳米粉体

Abstract: The CoFe₂O₄, ZnFe₂O₄ and Co_0.5Zn_0.5Fe₂O₄ nano-sized powders were prepared by solid-state reaction at ambient temperature. The alka line carbonates precursors were prepared with NH₄HCO₃ and metallic salt. By the study of different calcining heat, the as-prepared nano-sized powder were achieved at optimal temperature. The nano-sized powder were characterized by XRD, TG- DSC, TEM and VSM. The result shows that the single-phase CoFe₂O₄, ZnFe₂O₄ and Co_0.5Zn_0.5Fe₂O₄ nano-sized powders can be synthesed by solid-state reaction at ambient temperature. 

Keywords: solid-state reaction at ambient temperature; ferrite; nano sized powder