缺铁量对低温烧结NiCuZn铁氧体材料性能的影响

Influence of Fe-deficiency on the Properties of Low-temperature-fired NiCuZn Ferrites

采用固相反应法制备了低温烧结NiCuZn铁氧体,研究了缺铁量对材料显微结构、烧结密度、饱和磁感应强度以及磁导率和介电常数的影响。在此基础上确定了低温烧结NiCuZn铁氧体的最佳缺铁量:在900℃烧结时,当铁氧体NiaCubZn1―a―bFe2―xO4―3/2x(0.3≤a≤0.6;0.1≤b≤0.3)中缺铁量x为0.10时,材料能获得较好的显微结构、较高的烧结密度和饱和磁感应强度,且其磁导率也最高。

In this paper,low-temperature-fired NiCuZn ferrites were prepared by solid-state reaction method. The effects of iron deficiency on microstructure,density,saturation induction density,permeability and permittivity of ferrites were investigated. Ideal microstructure,higher density,higher saturation induction density and the highest permeability were obtained for sample with x=0.10 in NiaCubZn1―a―bFe2―xO4―3/2x（0.3≤a≤0.6; 0.1≤b≤0.3）.