Статья

Heterostructured Nanorings of Fe−Fe<sub>3</sub>O<sub>4</sub>@C Hybrid with Enhanced Microwave Absorption Performance

Xian JianNational Engineering Research Center of Electromagnetic Radiation Control Materials, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaXiangyun XiaoSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaLongjiang DengNational Engineering Research Center of Electromagnetic Radiation Control Materials, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaWei TianSchool of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, ChinaXin WangNational Engineering Research Center of Electromagnetic Radiation Control Materials, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, ChinaNasir MahmoodInstitute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong 2500, AustraliaShi Xue DouInstitute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong 2500, Australia

2018en

ABI

Аннотация

Microwave absorption is a critical challenge with progression in electronics, where fine structural designing of absorbent materials plays an effective role in optimizing their microwave absorption properties. Here, we have developed Fe3O4@C (FC) and Fe–Fe3O4@C (FFC) hybrid nanorings via a hydrothermal method coupled with a chemical catalytic vapor deposition technique. FC and FFC hybrid nanorings have fine carbon coating while their size can easily be tunable in a certain range from 80–130 to 90–140 nm. The optimized FC and FFC hybrid nanorings bear minimum reflection loss (RL) values of −39.1 dB at 15.9 GHz and −32.9 dB at 17.1 GHz, respectively, whereas FFC shows an effective absorption bandwidth (RL values < −10 dB) ranged from 5.2 to 18 GHz. Such an enhanced microwave absorption performance of hybrid nanorings is mainly due to the suitable impedance characteristics, multilevel interfaces, and polarization features in nanorings. This work provides an approach to design hybrid materials having a complex structure to enhance the microwave absorption properties.

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Идентификаторы

DOI: 10.1021/acsami.7b18324

Цитирования и источники

Цитирований: 2Использованных источников: 0

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