用溶胶-凝胶法制备了系列镍铜锌铁氧体微粉.借助于TG-DTA、XRD、SEM、VSM技术,对干凝胶的热分解过程、产物的物相、微观结构和磁性能进行研究.结果表明,反应温度为30℃,镍铜锌铁氧体微粉经800℃烧结后可以转变成尖晶石相,然而,反应温度为50℃,无法获得纯的镍锌铁氧体晶体,而且,由于杂质粒子的存在,饱和磁化强度和低温交换偏置场都减弱.
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