Dual rare-earth modification and interface engineering in SiC-based heterostructures for multi-frequency electromagnetic wave absorption
- 1Jiangxi Key Laboratory of Advanced Ceramic Materials , School of Materials Science and Engineering , Jingdezhen Ceramic University , Jingdezhen 333403 , China
Abstract
The escalating complexity of the electromagnetic environment calls for advanced electromagnetic wave (EMW) absorption materials capable of efficient multi-frequency attenuation. Silicon carbide (SiC) is a promising dielectric candidate but is hindered by intrinsic impedance mismatch and limited polarization loss. Herein, we report a novel ternary heterostructure absorber consisting of SiC nanowires synergistically coupled with dual rare-earth silicides (Ce5Si4 and Pr5Si4) fabricated via a combined magnesiothermic and carbothermal reduction process using an MFI-type zeolite precursor. This unique architecture creates an intricate porous network featuring abundant multiple heterogeneous interfaces (SiC/Ce5Si4, SiC/Pr5Si4, and Ce5Si4/Pr5Si4). The simultaneous incorporation of Ce and Pr optimizes the complex permittivity for impedance matching and induces intense multi-interfacial polarization relaxation. Consequently, the designed composite achieves efficient and strong EMW absorption performance in the C-band (4.30 GHz), X-band (8.24 GHz), and Ku-band (16.51 GHz), demonstrating remarkable multi-frequency point absorption performance. Radar cross-section (RCS) simulations further demonstrate its significant stealth capability, highlighting the potential of dual rare-earth synergistic engineering. This work provides a pioneering strategy for designing high-performance, multi-frequency SiC-based absorbers through the construction of ternary rare-earth silicide heterostructures.
Related
- In Situ Dielectric Heterophase Engineering of Ternary Chelate Nanowire‐Derived CoFe/MnO@C Nanorods for High‐Efficiency Electromagnetic Wave Absorption
- Modification of screen-printed carbon electrode with 2D MoS2 nanosheets/1D Bi2S3 nanorods heterostructures as voltammetric sensing platform for 2,4-dichlorophenol analysis in water samples
- Nanoscale Dielectric Gene Dual‐Regulations in High‐Entropy Materials for Enhanced Electromagnetic Wave Absorption Over Low‐Mid Frequency
- MOF‐Derived FeNi/C Composites Constructed by Controlled Etching for High‐Performance Electromagnetic Wave Absorption
- Interfacial Engineering of 2D/2D BiVO4/V2CTx Heterostructures for Enhanced Symmetric Supercapacitor Performance Across Various Electrolytes
BibTeX
@article{xu2026dual,
title = {{Dual rare-earth modification and interface engineering in SiC-based heterostructures for multi-frequency electromagnetic wave absorption}},
author = {Jingyi Xu and Zhanming Wu and Yunan Tan and Xiaojun Zeng},
journal = {Journal of Advanced Ceramics},
year = {2026},
month = may,
doi = {10.26599/jac.2026.9221325},
url = {https://doi.org/10.26599/jac.2026.9221325},
note = {CC BY},
}
RIS
TY - JOUR
TI - Dual rare-earth modification and interface engineering in SiC-based heterostructures for multi-frequency electromagnetic wave absorption
AU - Jingyi Xu
AU - Zhanming Wu
AU - Yunan Tan
AU - Xiaojun Zeng
PY - 2026
DA - 2026/05/20
JO - Journal of Advanced Ceramics
DO - 10.26599/jac.2026.9221325
UR - https://doi.org/10.26599/jac.2026.9221325
AB - The escalating complexity of the electromagnetic environment calls for advanced electromagnetic wave (EMW) absorption materials capable of efficient multi-frequency attenuation. Silicon carbide (SiC) is a promising dielectric candidate but is hindered by intrinsic impedance mismatch and limited polarization loss. Herein, we report a novel ternary heterostructure absorber consisting of SiC nanowires synergistically coupled with dual rare-earth silicides (Ce5Si4 and Pr5Si4) fabricated via a combined magnesiothermic and carbothermal reduction process using an MFI-type zeolite precursor. This unique architecture creates an intricate porous network featuring abundant multiple heterogeneous interfaces (SiC/Ce5Si4, SiC/Pr5Si4, and Ce5Si4/Pr5Si4). The simultaneous incorporation of Ce and Pr optimizes the complex permittivity for impedance matching and induces intense multi-interfacial polarization relaxation. Consequently, the designed composite achieves efficient and strong EMW absorption performance in the C-band (4.30 GHz), X-band (8.24 GHz), and Ku-band (16.51 GHz), demonstrating remarkable multi-frequency point absorption performance. Radar cross-section (RCS) simulations further demonstrate its significant stealth capability, highlighting the potential of dual rare-earth synergistic engineering. This work provides a pioneering strategy for designing high-performance, multi-frequency SiC-based absorbers through the construction of ternary rare-earth silicide heterostructures.
SN - 2226-4108
SN - 2227-8508
ER -