Microwave absorption performance enhanced by high-crystalline graphene and BaFe12O19 nanocomposites

Microwave absorption performance enhanced by high-crystalline graphene and BaFe12O19 nanocomposites

The nanocomposites, consisting of BaFe12O19 ferrite and few-layer graphene sheets (FL-GSs) in various weight ratios (1−9 wt. %), were fabricated by a mechanical mixing method. The high-crystalline FL-GSs were prepared by direct current arc discharge evaporation of pure graphite electrodes in an H2–A...

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Veröffentlicht in:Journal of applied physics 2016-05, Vol.119 (20)
Hauptverfasser: Tang, X. T., Wei, G. T., Zhu, T. X., Sheng, L. M., An, K., Yu, L. M., Liu, Y., Zhao, X. L.
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Barium hexaferrite
Crystal structure
Crystallinity
Dielectric loss
Dielectrics
Direct current
Electric arcs
Electromagnetic properties
Ferrites
Fillers
Graphene
Impedance matching
Magnetic permeability
Magnetic properties
Microwave absorption
Nanocomposites
Nanoparticles
Thermal stability
Weight
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Zusammenfassung:The nanocomposites, consisting of BaFe12O19 ferrite and few-layer graphene sheets (FL-GSs) in various weight ratios (1−9 wt. %), were fabricated by a mechanical mixing method. The high-crystalline FL-GSs were prepared by direct current arc discharge evaporation of pure graphite electrodes in an H2–Ar gas mixture. We measured the electromagnetic properties, including effective magnetic permeability and effective permittivity in addition to microwave absorption performance, of the FL-GSs/BaFe12O19 nanocomposites compared with the pristine BaFe12O19 nanoparticles (NPs). The nanocomposite FL-GSs/BaFe12O19 with the optimal performance (6 wt. % FL-GSs) exhibited an effective microwave absorption (
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4951002