Enhanced interfacial polarization of SiC/C nanofibers loaded with cobalt ferrite nanoparticles for improved electromagnetic wave absorption  

作　　者：Yixuan WANG Wei CUI Zhenxiong LI Lei ZHANG Yang REN Xiongxiong WU Zhihui HE Yashan HUO 

机构地区：[1]Center for Optoelectronic Information and Transform,School of Physics and Electronic Information,Yan’an University,Yan’an,716000,China [2]School of Chemistry and Chemical Engineering,Yan’an University,Yan’an,716000,China

出　　处：《Science China(Technological Sciences)》2025年第3期125-137,共13页中国科学(技术科学英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52303352,62065017);the Key Research and Development Program of Shaanxi Province(Grant No.2024GX-YBXM-097);the Startup Foundation for Doctors of Yan’an University(Grant No.YAU202313801);the Scientific Research Projects of Yan’an University(Grant No.2023CGZH-009)。

摘　　要：The unique advantages of heterogeneous interface engineering and its superior electromagnetic properties provide new momentum for designing advanced wave-absorbing materials.Most researchers focus on enhancing wave-absorbing capabilities by increasing interfacial polarization,often overlooking material cost and engineering feasibility.To address this,we enhance the heterogeneous interfaces of SiC/C nanofibers(NFs)by loading cobalt ferrite nanoparticles(CFO NPs),exploring a simple,cost-effective strategy to develop high-performance wave-absorbing composites.By adjusting the CFO concentration,we optimize the dielectric and magnetic losses of the composite to achieve impedance matching and improve absorption performance.The results show that the SiC/C/CFO20 composite exhibits excellent microwave absorption(MA),achieving a reflection loss(RL)value of-56.52 dB at 11.60 GHz with a matching thickness of 2 mm and an effective absorption bandwidth(EAB)of 5.05 GHz.Furthermore,the composite shows outstanding performance in both monostatic and bistatic radar cross section(RCS)simulations,with optimal values reaching-49.04 and-51.16 d B,respectively.This performance demonstrates a wide detection angle,supporting its potential for practical engineering applications.Overall,this approach provides a new perspective for designing high-efficiency,low-cost,and scalable wave-absorbing materials for engineering applications.

关 键 词：composite nanofibers magnetoelectric synergistic effect interface engineering radar cross section 

分 类 号：TB34[一般工业技术—材料科学与工程] TN03[电子电信—物理电子学] TN95