Abstract Using γ-FeOOH and α-FeOOH as template materials rod-shaped NiFe2O4 were prepared by chemical precipitation-topotactic reaction method. A comparison was made on their precursors, synthesis processes and final calcinated products. The results showed that the rod-shaped NiFe2O4 prepared from needle-like γ-FeOOH and α-FeOOH experienced different formation routes, and their crystallinity and morphology depend on the formation routes. The rod-shaped NiFe2O4 prepared from α-FeOOH shows a higher saturation magnetization, and the crystallinity plays an important role in its magnetic performance.

中文翻译：

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以针状γ-FeOOH和α-FeO​​OH为模板通过化学沉淀-拓扑反应合成棒状NiFe 2 O 4 及其磁性能

摘要 以γ-FeOOH和α-FeO​​OH为模板材料，采用化学沉淀-拓扑规反应法制备棒状NiFe2O4。对它们的前体、合成工艺和最终煅烧产物进行了比较。结果表明，由针状γ-FeOOH和α-FeO​​OH制备的棒状NiFe2O4经历了不同的形成途径，其结晶度和形貌取决于形成途径。由α-FeO​​OH制备的棒状NiFe2O4显示出较高的饱和磁化强度，结晶度对其磁性能起重要作用。