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Enhanced Microwave Absorption Properties of FeNi Nanocrystals Decorating Reduced Graphene Oxide
Author(s) -
Su Zhibin,
Tan Li,
Tao Jin,
Zhang Can,
Yang Ruiqiang,
Wen Fusheng
Publication year - 2018
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201700553
Subject(s) - graphene , reflection loss , materials science , microwave , composite number , oxide , nanocrystal , hydrothermal circulation , absorption (acoustics) , dielectric loss , dielectric , nanotechnology , composite material , optoelectronics , chemical engineering , metallurgy , telecommunications , computer science , engineering
The composite of FeNi nanocrystals (size of 10–100 nm) decorating reduced graphene oxide (rGO) sheets (FeNi@rGO) is prepared by hydrothermal reaction and hydrogen reduction. Compared with sole FeNi nanocrystals, the FeNi@rGO composite possesses a lower frequency of the optimal reflection loss (RL) and a greatly enhanced RL value. An optimal RL of −26.7 dB has been achieved at 4.8 GHz by measuring the composite with thickness of 4.55 mm, which is attributed to the combination of FeNi with excellent magnetic loss and rGO with outstanding dielectric loss, respectively. Obviously, the FeNi@rGO composite has an enormous potential as a microwave absorbing candidate due to its admirable microwave absorption performance.