Microwave Absorption Properties of BaFe₁₂O₁₉ Prepared in Different Temperature with Polyaniline Nanocomposites

Abstract:

The BaFe₁₂O₁₉ nanoparticles was prepared by sol-gel method in different temperature (750°C,850°Cand 950°C), and then BaFe₁₂O₁₉/polyaniline nanocomposites was synthesized by in situ polymerization. The XRD, FTIR spectra, SEM and vector network analyzer were used to analyze the "" chemical component, morphology and microwave absorption property of the nanocomposites. The result show that BaFe₁₂O₁₉ can be generated at 750°C without any impurity ,and its size increased with increase of calcination temperature.BaFe₁₂O₁₉ nanoparticle was coated with polyaniline partially, and we can get it have interaction with polyaniline through FTIR spectra. While the ferrite calcined at 850°C,the thickness of the absorbing material is 4.5mm,the nanocomposites have the largest reflection loss of-17.6 dB at 6 GHz,and its reflection loss values less than−10 dB in the range of 5-7.4GHz.

• Periodical: Advanced Materials Research (Volume 1142)
• Pages: 211-215
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1142.211
• Online since: January 2017
• Authors: Wang Jun Feng, Xing Zhao, Wen Qian Zheng, Jun Tao Gang, Yue Cao, Hua Yang
• Keywords: BaFe₁₂O₁₉, In Situ Polymerization, Microwave Absorption Property, Polyaniline Nanocomposite, Sol-Gel

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