Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/93447
Title: | Fe/C nanocapsule-decorated Fe2B/C nanocapsule hybrids with improved gigahertz electromagnetic absorption properties | Authors: | Liu, X Zhang, M Or, SW Ho, SL |
Issue Date: | Feb-2019 | Source: | IEEE transactions on magnetics, Feb. 2019, v. 55, no. 2, p. 1-5 | Abstract: | We report an obvious improvement in gigahertz electromagnetic (EM) absorption properties in novel core/shell-structured magnetic/dielectric nanocapsule-decorated nanocapsule hybrids, featuring Fe/C nanocapsules of 4 nm mean diameter decorated on the surfaces of Fe2B/C nanocapsules of 50 nm mean diameter (denoted as Fe/C@Fe2B/C hybrids), as a result of the simultaneously enhanced dielectric and magnetic losses by an increased interfacial polarization at the Fe/C and Fe2B/C heterogeneous interfaces and an additional tip effect by the decoration of small Fe/C nanocapsules. The phase, morphology, microstructure, and magnetization of the Fe/C@Fe2B/C hybrids are investigated using various methods, and their EM absorption properties are evaluated in paraffin-bonded composites with 50 wt.% hybrids over the 2-18 GHz range. The results indicate a giant reflection loss (RL) of-49.5 dB at 10.5 GHz and a broad effective absorption bandwidth (for RL <-10 dB) of 8 GHz at a thin composite thickness of 2.1 mm. An extremely broad coverage of effective absorption bandwidth from 2.5 to 18 GHz is obtained at a very wide composite thickness range of 1-6 mm. The present study provides a new prospective for realizing high-performance EM absorbers at gigahertz frequencies. | Keywords: | Core/shell structure Decoration Electromagnetic (EM) absorption properties Hybrid Nanocapsules |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | IEEE transactions on magnetics | ISSN: | 0018-9464 | EISSN: | 1941-0069 | DOI: | 10.1109/TMAG.2018.2866308 | Rights: | © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The following publication X. Liu, M. Zhang, S. W. Or and S. L. Ho, "Fe/C Nanocapsule-Decorated Fe2B/C Nanocapsule Hybrids With Improved Gigahertz Electromagnetic Absorption Properties," in IEEE Transactions on Magnetics, vol. 55, no. 2, pp. 1-5, Feb. 2019 is available at https://doi.org/10.1109/TMAG.2018.2866308 |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Zhang_Nanocapsule_Decorated_Nanocapsule.pdf | Pre-Published version | 2.42 MB | Adobe PDF | View/Open |
Page views
29
Last Week
0
0
Last month
Citations as of Apr 28, 2024
Downloads
23
Citations as of Apr 28, 2024
SCOPUSTM
Citations
3
Citations as of Apr 26, 2024
WEB OF SCIENCETM
Citations
2
Citations as of May 2, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.