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材料工程  2008 

Ce取代对纳米晶Ni0.5Zn0.5Fe2O4电磁性能的影响

, PP. 114-117

Keywords: 聚丙烯酰胺凝胶法,取代,Ni0.5Zn0.5Fe2O4,电磁性能

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Abstract:

以丙烯酰胺为聚合单体,N,N-亚甲基双丙烯酰胺为网络剂,采用聚丙烯酰胺凝胶法制备了尖晶石型Ni0.5Zn0.5CexFe2-xO4(x=0,0.05)纳米晶。采用X射线,FT-IR,TEM和波导等方法对产物进行了表征。X射线结果表明,当煅烧温度为600℃时,形成纯相的尖晶石型Ni0.5Zn0.5CexFe2-xO4(x=0,0.05);由透射电镜照片可知Ni0.5Zn0.5Fe2O4平均粒径约为30nm;纳米晶体在8.2~12.4GHz的测试频率范围内具有介电损耗(ε″)和磁损耗(μ″),Ni0.5Zn0.5Ce0.05Fe1.95O4的ε″和μ″均高于Ni0.5Zn0.5Fe2O4,Ni0.5Zn0.5Ce0.05Fe1.95O4的ε″和μ″的最大值分别为0.93和0.15。

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