Alternate nonmagnetic and magnetic multilayer nanofilms deposited on carbon nanocoils by atomic layer deposition to tune microwave absorption property

Shichao Zhao, Zhe Gao, Chaoqiu Chen, Guizhen Wang, Bin Zhang, Yao Chen, Jing Zhang, Xiao Li, Yong Qin

Research output: Contribution to journalArticlepeer-review

129 Scopus citations

Abstract

In this study, alternate nonmagnetic Al2O3 and magnetic Fe3O4 multilayer nanofilms with precisely controlled thickness were deposited on carbon nanocoils by atomic layer deposition. The as-synthesized composites exhibit superior microwave absorption performance, which can be flexibly tuned by varying the thickness of each individual layer or the number of layers. The excellent absorption performance arises from the effective impedance matching, alternate multilayer nanostructure and chiral morphology of the samples, and efficient magnetic loss from magnetic constituents. Our work demonstrates a new strategy to tune microwave absorption performance and this method can be extended to exploit other excellent microwave absorbers with alternate multilayer hetero-nanostructures owing to the convenient control of electromagnetic parameters.

Original languageEnglish
Pages (from-to)196-203
Number of pages8
JournalCarbon
Volume98
DOIs
StatePublished - 1 Mar 2016
Externally publishedYes

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