具有增强极化界面的核-壳型BaFe12O19@Fe3O4/MWCNT层状复合材料的可控水热合成

IF 5.5 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2025-10-06 DOI:10.1021/acsanm.5c03727

Zhuolun Li, , , Haozhe Qi, , , Xiaoxia Tian*, , , Jiafu Wang, , , Yuchuan Ma, , , Jincai Wang, , , Guodong Han, , and , Shaobo Qu,

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引用次数: 0

摘要

采用顺序水热法合成了BaFe12O19/MWCNT/Fe3O4三元复合材料。这种结构利用了维度上的互补性：界面极化通过二维六铁氧体血小板和一维导电碳网络之间的协同接触而增强。同时，通过固定在铁氧体表面的Fe3O4纳米团簇增强了磁耦合，建立了交换偏置磁化动力学。综合电磁特性显示了优异的吸收性能，在1.29 mm厚度下，在15.62 GHz处的反射损耗为−55.67 dB，有效带宽为4.03 GHz （13.92-17.95 GHz）。性能增强源于协同的介电-磁相互作用，包括异质结极化、交换耦合共振和多元件支持的阻抗匹配。这种结构优化的系统显示了先进宽带电磁波衰减解决方案的巨大应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Controllable Hydrothermal Synthesis of Core–Shell-Type BaFe12O19@Fe3O4/MWCNT Layered Composites with Enhanced Polarization Interfaces for Electromagnetic Energy Conversion

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Controllable Hydrothermal Synthesis of Core–Shell-Type BaFe12O19@Fe3O4/MWCNT Layered Composites with Enhanced Polarization Interfaces for Electromagnetic Energy Conversion

A ternary BaFe₁₂O₁₉/MWCNT/Fe₃O₄ composite was synthesized through sequential hydrothermal processing. This architecture leverages dimensional complementarity: interfacial polarization intensifies via synergistic contact between two-dimensional hexaferrite platelets and one-dimensional conductive carbon networks. Simultaneously, magnetic coupling is enhanced through Fe₃O₄ nanoclusters anchored onto ferrite surfaces, establishing exchange-biased magnetization dynamics. Comprehensive electromagnetic characterization revealed exceptional absorption performance, achieving −55.67 dB reflection loss at 15.62 GHz with a 4.03 GHz effective bandwidth (13.92–17.95 GHz) at 1.29 mm thickness. Performance enhancement stems from synergistic dielectric–magnetic interactions, including heterojunction polarization, exchange-coupled resonance, and multicomponent-enabled impedance matching. This structurally optimized system demonstrates substantial application potential for advanced broadband electromagnetic wave attenuation solutions.

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.