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中文摘要：
以醋酸镍、醋酸钻为原料，尿素为沉淀剂，采用均相沉淀法合成了纯的尖晶石型链状纳米NiCo2O4（F），其结构和性能经XRD，SEM，TEM和振动样品磁强计（VSM）表征。研究了分散剂聚乙二醇对F结构、形貌及磁性能的影响。结果表明：350℃煅烧6h可以得到单相F；未加入PEG-600时F的组成粒径为15Illn，链长为150nm；加入PEG-600后F粒径减小至9nm，链长增加至220nm；F的剩磁和矫顽力都趋近于零，呈现超顺磁性，加入PEG后F的饱和磁化强度明显提高。
英文摘要：
The spinel-type NiCo204 （F） with nanochain structure was prepared via homogeneous pre- cipitation method from Co（CHaCO0）2 ·4H20 and Ni（CH3COO）2 · 4H20, using urea as the pre- cipitator and polyethylene glycol 600 （ PEG 600） as the disperser. The structure was characterized by XRD, SEM, TEM and VSM. The effect of PEG on the structure, morphology and magnetic properties of F were investigated. The results showed that the precursor can be transformed into single-phase F by calcining at 350℃for 6 h with the diameter of 15 nm and the length of 150 nm, which exhibited superparamagnetism. With the addition of PEG 600, the length of F was increased to 220 nm and the diameter was decreased to 9 nm, which exhibited higher saturation magnetization.
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