In Situ Dielectric Heterophase Engineering of Ternary Chelate Nanowire‐Derived CoFe/MnO@C Nanorods for High‐Efficiency Electromagnetic Wave Absorption
- 1School of Chemistry and Pharmaceutical Engineering Shandong First Medical University & Shandong Academy of Medical Sciences Taian China
- 2School of Economics and Management Yantai University Yantai China
- 3School of Environmental and Material Engineering Yantai University Yantai China
Abstract
Nowadays, constructing heterogeneous interface engineering based on metal‐organic frameworks has become an effective strategy for enhancing electromagnetic response. Nevertheless, balancing magnetic–dielectric synergistic effects among components and achieving strong wideband electromagnetic wave (EMW) absorption remains a challenge. Herein, heterostructure CoFe/MnO@C nanorods (CFM@C) assembled from carbon‐coated magnetic/dielectric dual core nanocapsules were fabricated by calcining ternary metal chelates. Interestingly, the metal ions did not form a ternary alloy, but rather Mn transformed into MnO and embedded as the dielectric heterophase in the CoFe magnetic core. Thanks to the multipolarization enhancement and magnetoelectric synergistic effect, the EMW attenuation ability of CFMC nanorods is enhanced and their impedance matching is optimized. Compared to CoFe@C, CFM@C exhibits superior EMW absorption performance with a minimum reflection loss (RL) of −52.42 dB and an effective absorption bandwidth (EAB) of 7.36 GHz. Excitingly, the gradient multilayer structural design obtained from computer simulation technology (CST) simulation can extend EAB to 10.31 GHz. Radar cross‐section (RCS) simulation result demonstrates that the maximum RCS reduction is 25.56 dB at 0°, demonstrating its strong radar wave attenuation ability. Therefore, the CFM@C nanorods demonstrate promising practical applications and this study provides an innovative strategy for constructing strong broadband EMW absorbers.
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BibTeX
@article{wang2026situ,
title = {{In Situ Dielectric Heterophase Engineering of Ternary Chelate Nanowire‐Derived CoFe/MnO@C Nanorods for High‐Efficiency Electromagnetic Wave Absorption}},
author = {Baolei Wang and Cui Ni and Changxiang Shao and Faying Li and Xiubo Xie},
journal = {Small Structures},
year = {2026},
month = oct,
doi = {10.1002/sstr.70635},
url = {https://doi.org/10.1002/sstr.70635},
note = {CC BY},
}
RIS
TY - JOUR
TI - In Situ Dielectric Heterophase Engineering of Ternary Chelate Nanowire‐Derived CoFe/MnO@C Nanorods for High‐Efficiency Electromagnetic Wave Absorption
AU - Baolei Wang
AU - Cui Ni
AU - Changxiang Shao
AU - Faying Li
AU - Xiubo Xie
PY - 2026
DA - 2026/10/25
JO - Small Structures
DO - 10.1002/sstr.70635
UR - https://doi.org/10.1002/sstr.70635
AB - Nowadays, constructing heterogeneous interface engineering based on metal‐organic frameworks has become an effective strategy for enhancing electromagnetic response. Nevertheless, balancing magnetic–dielectric synergistic effects among components and achieving strong wideband electromagnetic wave (EMW) absorption remains a challenge. Herein, heterostructure CoFe/MnO@C nanorods (CFM@C) assembled from carbon‐coated magnetic/dielectric dual core nanocapsules were fabricated by calcining ternary metal chelates. Interestingly, the metal ions did not form a ternary alloy, but rather Mn transformed into MnO and embedded as the dielectric heterophase in the CoFe magnetic core. Thanks to the multipolarization enhancement and magnetoelectric synergistic effect, the EMW attenuation ability of CFMC nanorods is enhanced and their impedance matching is optimized. Compared to CoFe@C, CFM@C exhibits superior EMW absorption performance with a minimum reflection loss (RL) of −52.42 dB and an effective absorption bandwidth (EAB) of 7.36 GHz. Excitingly, the gradient multilayer structural design obtained from computer simulation technology (CST) simulation can extend EAB to 10.31 GHz. Radar cross‐section (RCS) simulation result demonstrates that the maximum RCS reduction is 25.56 dB at 0°, demonstrating its strong radar wave attenuation ability. Therefore, the CFM@C nanorods demonstrate promising practical applications and this study provides an innovative strategy for constructing strong broadband EMW absorbers.
SN - 2688-4062
ER -