In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 10, No. 20 ( 2022), p. 10909-10915
Abstract:
Assembly of multiple-component composites into a beneficial multi-shell structure has been demonstrated as an efficient strategy to induce wideband electromagnetic (EM) attenuation in principle. However, structural engineering with selective components remains challenging, hindering the development of high-performance EM absorbers. Herein, a distinctive structure of large-scale magnetic particle-decorated multi-branch Fe@SiO 2 @Fe is proposed, obtained via an anisotropic magnetic loading strategy to achieve broadband microwave attenuation performance. Adjusting the interaction force equilibrium between magnetic particles and silica, a uniform coating layer composed of bulky magnetic particles on a 3D template is fabricated. The effective microwave bandwidth is broadened by the enhanced magnetic response range with multi-scale magnetic couplings and remarkable hierarchical interfacial polarization in our highly symmetrical structure, reaching 11.5 GHz at a thickness of 2.5 mm. Our component and structural modulation provides a strategy for achieving ultra-broadband EM absorption by anisotropic design.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2702232-8
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