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The Cobalt Zinc Spinel Ferrite Nanofiber: Lightweight and Efficient Microwave Absorber
Author(s) -
Huang Xiaogu,
Zhang Jing,
Xiao Shaorong,
Chen Guosheng
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12909
Subject(s) - ferrite (magnet) , materials science , spinel , coercivity , reflection loss , microwave , nanofiber , zinc ferrite , zinc , composite material , analytical chemistry (journal) , metallurgy , composite number , chemistry , condensed matter physics , physics , chromatography , quantum mechanics
To solve the heavy mass problem of the traditional spinel ferrite using as the microwave absorber, the Co x Zn (1− x ) Fe 2 O 4 ( x = 0.2, 0.4, 0.6, 0.8) ferrite nanofibres were synthesized by electrospinning method. The phase composition, morphology, and electromagnetic properties were analyzed. The results showed that all the as‐prepared Co x Zn (1− x ) Fe 2 O 4 ferrites exhibited the homogeneous nanofibrous shape. The saturation magnetization and coercivity were enhanced by tuning the Co 2+ content. The electromagnetic loss analysis indicated that the Co 0.6 Zn 0.4 Fe 2 O 4 ferrite nanofiber performed the strongest microwave attenuation ability. The microwave absorbing coating containing 15 wt% of Co 0.6 Zn 0.4 Fe 2 O 4 ferrite nanofiber showed the reflection loss less than −10 dB in the whole X ‐band and 80% of the Ku ‐band frequencies. Meanwhile, the surface density was only 2.4 Kg/m 2 .