The Cobalt Zinc Spinel Ferrite Nanofiber: Lightweight and Efficient Microwave Absorber |
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Authors: | Xiaogu Huang Jing Zhang Shaorong Xiao Guosheng Chen |
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Affiliation: | 1. School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, , Nanjing, 210044 China;2. Nanjing Center, China Geological Survey, , Nanjing, 210016 China |
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Abstract: | To solve the heavy mass problem of the traditional spinel ferrite using as the microwave absorber, the CoxZn(1?x)Fe2O4 (x = 0.2, 0.4, 0.6, 0.8) ferrite nanofibres were synthesized by electrospinning method. The phase composition, morphology, and electromagnetic properties were analyzed. The results showed that all the as‐prepared CoxZn(1?x)Fe2O4 ferrites exhibited the homogeneous nanofibrous shape. The saturation magnetization and coercivity were enhanced by tuning the Co2+ content. The electromagnetic loss analysis indicated that the Co0.6Zn0.4Fe2O4 ferrite nanofiber performed the strongest microwave attenuation ability. The microwave absorbing coating containing 15 wt% of Co0.6Zn0.4Fe2O4 ferrite nanofiber showed the reflection loss less than ?10 dB in the whole X‐band and 80% of the Ku‐band frequencies. Meanwhile, the surface density was only 2.4 Kg/m2. |
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