【摘要】 采用NH4HCO3与FeCl3.6H2O、Zn(NO3)2.6H2O、Ni(NO3)2.6H2O进行室温固相反应制得Fe(OH)3、Zn3(OH)4CO3.H2O、Ni3(OH)4CO3.4H2O混合前驱物,先经微波加热,再热分解制得纳米粉体。利用激光粒度分析仪、XRD、SEM和TEM对分解产物进行了表征,获得了形貌为球形、颗粒分布均匀、平均粒度为62nm、尖晶石结构的纳米Ni0.5Zn0.5Fe2O4复合铁氧体粉体。经测试样品的相对介电常数和相对磁导率后,发现该纳米铁氧体粉体在100~1800MHz内具有良好的电损耗和磁损耗性能。更多还原

【Abstract】 The precursors of Zn₃（OH）₄CO₃·H₂O,Ni₃（OH）₄CO₃·4H₂O and Fe（OH）₃ for Ni_0.5Zn_0.5Fe₂O₄ ferrite were prepared by solid-state reaction at room temperature and characterized by TG-DSC.The nanometer spinel Ni_0.5Zn_0.5Fe₂O₄ ferrite with the average size of 62nm was obtained by microwave heating and thermolysis at 550℃ and studied by laser granularity analyzer,XRD,SEM and TEM.The electromagnetic loss property was studied by the relative dielectric constant and relative magnetic permeability of Ni_0.5Zn_0.5Fe₂O₄ and ZnFe₂O₄.The results show that the composite ferrite Ni_0.5Zn_0.5Fe₂O₄ has a better magnetic loss property than ZnFe₂O₄ at 100～1800MHz.更多还原