以柠檬酸和金属盐为原料,采用有机凝胶先驱体转化法成功制备了纳米晶Nix-Zn1-x(x=0.25～0.75)铁氧体纤维.通过FTIR,TG/DSC,XRD及SEM对纤维先驱体凝胶的结构、热分解过程及热处理产物的物相、形貌进行了表征.采用VSM研究了铁氧体纤维的磁性能.结果表明:这种Ni-Zn铁氧体纤维表面光滑,直径均匀,有较大的长径比,最细纤维直径可达1μm以下;组成Nix-Zn1-x(x=0.25～0.75)铁氧体纤维的晶粒大小在15.2～86 nm,主要受焙烧温度的影响;纤维的饱和磁化强度与矫顽力与其成分和焙烧温度有关,经800℃焙烧2 h后得到的Ni0.5-Zn0.5铁氧体纤维的饱和磁化强度为12.723 A·m2·kg-1矫顽力为5851 A·m-1.
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