Fabrication and electromagnetic wave absorption of novel Ni_0.4Zn_0.2Mn_0.4Ce_0.06Fe_1.94O₄–carbonyl iron composites

Abstract

NZMCF)-carbonyl iron (CI) composites were fabricated using metal organic chemical vapor deposition (MOCVD) and were used as electromagnetic wave (EMW) absorbing materials.X-ray diffraction, scanning electron microscopy and energy dispersive spectrometry show that the NZMCF-CI composites were successfully prepared. Optimizing the weight ratio of CI would likely cause the composites to attain the EM parameters necessary in EMW absorbing materials. When the weight content of CI in the composites was approximately 27% (labeled as C2), the minimum reflection loss (RL) was À32.4 dB at 15.6 GHz and the corresponding thickness was 2.0 mm. The RL of C2 exceeds À10 dB from 6.6 to 18 GHz for an absorber thickness of 2.8 mm, which covers part of the C-band (3.8-8.2 GHz) and the entire X-band (8.2-12.4 GHz) and .

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