| 纳米Zn-Co铁氧体的固相合成及电磁损耗特性研究 |
| Synthesis by Solid-state Reaction and Electromagnetic Loss Property of Nanometer Zn-Co Ferrite |
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| 摘要: 采用NH4HCO3与FeCl3·6H2O，Zn(NO3)2·6H2O，Co(NO3)2·6H2O进行室温固相反应制得前驱物，经微波加热处理后，进而热分解分别制得复合氧化物ZnFe2O4、CoFe2O4和Co0.5Zn0.5Fe2O4。由激光粒度分析仪、XRD和SEM表征：获得了颗粒分布比较均一、平均粒度为65 nm左右、立方晶系尖晶石结构的纳米铁氧体粉体。经测试样品的相对介电常数和相对磁导率后，研究了它们的电磁损耗特性。结果表明：Co0.5Zn0.5Fe2O4在100～1 800 MHz内比另外两种铁氧体具有更好的电磁损耗特性。 |
| 关键词: 纳米Zn-Co铁氧体 固相合成 微波加热 电磁损耗 |
| 基金项目: |
| Abstract: The precursors of Zn3(OH)4CO3·H2O, Co5(OH)6(CO3)2·8H2O and Fe(OH)3 for Zn-Co Ferrite were prepared by solid-state reaction at room temperature and characterized by TG-DSC. The nanometer Zn1-xCoxFe2O4 (X=0, 0.5, 1) were obtained by microwave heating and thermolysis between 550～600 ℃ and were studied by Laser Granularity Analyzer, XRD, SEM. The electromagnetic loss property was studied by the relative dielectric constant and relative magnetic permeability of the above three ferrites. The results show that the composite ferrite Co0.5Zn0.5Fe2O4 has a better electromagnetic loss property at 100～1 800 MHz. |
| Keywords: nano zinc-cobalt ferrite solid-state synthesis microwave heating electromagnetic loss |
| 投稿时间：2004-08-16 修订日期：2004-11-10 |
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| 陈学平,庄稼,迟燕华,杨定明,韩国忠,邓元.纳米Zn-Co铁氧体的固相合成及电磁损耗特性研究[J].无机化学学报,2005,21(3):337-343. |
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