Preparation and microwave absorption mechanisms of the NiZn ferrite nanofibers
Preparation and microwave absorption mechanisms of the NiZn ferrite nanofibers
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NiZn铁氧体纳米纤维的制备及其吸波机理
DOI：
10.1016/j.jallcom.2014.11.235
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发表时间：
2015-04-05
影响因子：
6.2
通讯作者：
Sang, Tianyi
中科院分区：
文献类型：
--
作者：
Huang, Xiaogu;Zhang, Jing;Sang, Tianyi
本文采用静电纺丝法制备了NixZn（1-x）Fe 2 O 4（x = 0.2，0.4，0.5，0.6，0.8）铁氧体纳米纤维。详细分析了其微观结构、电磁性能和吸波机理。结果表明，通过调节Ni 2+的含量，可以优化样品的粒径、饱和磁化强度、矫顽力和电磁性能。Ni0.5Zn0.5Fe2O4铁氧体最终表现出优异的微波吸收性能。在整个X波段，反射损耗小于-10dB。微波吸收机理分析表明，微波吸收带宽主要取决于输入阻抗匹配，增强的电磁损耗特性保证了入射波能被大部分吸收，反射损耗峰值出现的频率由吸收体厚度决定。(C)2015 Elsevier B. V.版权所有。
In this paper, the NixZn(1-x)Fe2O4 (x = 0.2, 0.4, 0.5, 0.6, 0.8) ferrite nanofibers were synthesized by electrospinning method. The microstructure, electromagnetic properties and microwave absorption mechanisms were analyzed (in detail). The results indicated that the nanofiber diameter, the saturation magnetization, the coercivity and the electromagnetic properties could be optimized by tuning the Ni2+ content. The Ni0.5Zn0.5Fe2O4 ferrite nanofiber finally performed the excellent microwave absorption properties. The reflection loss was less than -10 dB in the whole X-band frequencies. The analysis of microwave absorption mechanism indicated that the microwave absorption bandwidth was mainly depended on the input impedance matching, the enhanced electromagnetic loss properties ensured that the entering wave could be mostly absorbed, and the frequency appearing the reflection loss peak was determined by the absorber thickness. (C) 2015 Elsevier B.V. All rights reserved.