Synthesis of Nickel-Based Ferrite Nanofibers and their Static Magnetic and Microwave Absorption Properties

Abstract:

Ni_0.5Zn_0.5Fe₂O₄, Ni_0.3Cu_0.2Zn_0.5Fe₂O₄ and Ni_0.4Co_0.2Zn_0.4Fe₂O₄ spinel ferrite nanofibers with 60–100 nm in diameter were fabricated through the sol-gel assisted electrospinning method, followed by calcination at 600°C for 2h in air. The phase structure morphology and element composition of these nanofibers were determined by XRD, FE-SEM and EDS. Magnetic measurements were used to justify the ferromagnetic properties of these nanofibers. Microwave absorption, which was in the range of 2-18 GHz, was studied by a vector network analyzer. The adoption of Cu²⁺ and Co²⁺ substitution was found to improve the microwave absorption in relation to non-substituted NiZn ferrite nanofibers. Reflection loss exceeding –5 dB is obtained between 11 and 18 GHz for silicon rubber composites containing 15 vol% nickel-based ferrite nanofibers with coating thicknesses of 3 mm. The results indicate that the prepared nickel-based ferrite nanofibers possess good electromagnetic wave absorption performance in the Ku band and have great potential as microwave absorber for practical applications.

• Periodical: Advanced Materials Research (Volumes 631-632)
• Pages: 429-433
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.631-632.429
• Online since: January 2013
• Authors: Yan Qiu Chu, Bin Zhang, Jun Xiang
• Keywords: Electronspinning, Microwave Absorption Performance, Nickel-Based Ferrite Nanofibers

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