Journal
MATERIALS RESEARCH EXPRESS
Volume 7, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/ab6c1a
Keywords
NixCu1-xFe2O4; spinel structure; magnetic properties; dielectric properties; electromagnetic wave absorption properties
Categories
Funding
- Inorganic Non-metal Institute of Shandong University
- Shandong Provincial Science and Technology Department Project [31370004011501]
- Shandong Province Key research and Development Program [2016ZDJS05A05]
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NixCu1-xFe2O4 nanocrystals were prepared by co-precipitation technique to study the electromagnetic (EM) wave absorption properties. The XRD and SEM results confirm the formation of single-phase cubic spinel structure and reveal that the crystallite size decreases with the addition of Ni content. The vibrating sample magnetometer results showed that the as-prepared material was soft magnetic and have potential applications in magnetic storage technology and field sensors. The dielectric parameters and EM wave absorption characteristics of NixCu1-xFe2O4 nanocrystals were studied in the frequency range of 1-18GHz using a vector network analyzer. The permittivity, impedance matching, and EM wave absorption of the materials are significantly improved with the increase in Ni content. The lowest value of reflection loss (R-L) is observed -22.8 dB at 16.09 GHz (R-L <= -10dB, absorption >90%), showing an optimal EM wave absorption performance, which might generate from the synergistic effect between relative permittivity and permeability.
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