| Ni_(1-x)Co_xFe_2O_4铁氧体纳米粉末的磁性能和微波吸收特性 |
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| 引用本文： | 徐超,卢佃清,刘学东,周朕,杜敏生. Ni_(1-x)Co_xFe_2O_4铁氧体纳米粉末的磁性能和微波吸收特性[J]. 材料科学与工程学报, 2009, 0(3) |
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| 作者姓名： | 徐超 卢佃清 刘学东 周朕 杜敏生 |
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| 作者单位： | 淮海工学院理学院;内蒙古大学物理系稀土材料重点实验室; |
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| 基金项目： | 江苏省高校自然科学研究计划资助项目(06KJD430014);;国家自然科学基金资助项目(50164003) |
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| 摘 要： | 利用柠檬酸溶胶-凝胶自蔓延燃烧法合成了Ni1-xCoxFe2O4(x=0,0.1,0.3,0.5)铁氧体纳米粉末。利用XRD、VSM和矢量网络分析仪测定了粉末样品的晶体结构、磁性能和电磁参数。定性分析了样品的饱和磁化强度、矫顽力、复磁导率和复介电常数随频率和Co含量的变化关系。结果表明,自蔓延的所有粉末样品经过600℃,2h高温退火后均为尖晶石相纳米晶颗粒。随着Co替代量x的增加,样品的自然共振频率先增大后减小,并对微波吸收特性有一定的改善。
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| 关 键 词： | 溶胶-凝胶自蔓延 铁氧体 纳米颗粒 微波吸收特性 |
Magnetic and Microwave Absorption Properties of Ni_(1-x)Co_xFe_2O_4 Ferrite Nanoparticles |
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| XU Chao,LU Dian-qing,LIU Xue-dong,ZHOU Zhen,DU Min-sheng. Magnetic and Microwave Absorption Properties of Ni_(1-x)Co_xFe_2O_4 Ferrite Nanoparticles[J]. Journal of Materials Science and Engineering, 2009, 0(3) |
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| Authors: | XU Chao LU Dian-qing LIU Xue-dong ZHOU Zhen DU Min-sheng |
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| Affiliation: | 1. Department of Physics and Mathematics;HuaiHai institute of Technology;Lianyungang 222005;China;2. Department of Physics;Inner Mongolia University;Huhhot 010021;China |
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| Abstract: | The nanosized Ni_ 1-x Co_xFe_2O_4 (x=0, 0.1, 0.3, 0.5) ferrite particles were prepared by sol-gel combusion technique. The characterization studies such as XRD, VSM and Vector Network Analyzer have been carried out to explore the crystal structure, magnetic properties and electromagnetic parameters of the samples. The relation of the saturation magnetization, coercivity, complex permeability and complex permittivity to the cobalt content and the frequency of microwave were analysed qualitatively. The result... |
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| Keywords: | sol-gel combustion ferrite nanoparticle microwave absorption property |
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