Synthesis,characterization and microwave absorption properties of polyaniline/Sm-doped strontium ferrite nanocomposite |
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| Affiliation: | 1. School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, China;2. School of Material Science and Engineering, Changzhou University, Changzhou 213164, China;1. School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, China;2. School of Material Science and Engineering, Changzhou University, Changzhou 213164, China;1. Physics Department, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran;2. Institute of Nanotechnology, Shiraz University, Shiraz 71454, Iran;3. Key Laboratory of Environmental Fracture, Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China;1. Physics Department, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran;2. Institute of Nanotechnology, Shiraz University, Shiraz 71454, Iran;3. Air-Nautical Research Center, Shiraz 71946-84043, Iran;1. State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China;2. Guizhou Institute of Metallurgy and Chemical Engineering, Guiyang 550002, PR China |
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| Abstract: | Sm-doped strontium ferrite nanopowders (SrSm0.3Fe11.7O19) and their composites of polyaniline (PANI)/SrSm0.3Fe11.7O19 with 10 wt% and 20 wt% ferrite were prepared by a sol–gel method and an in-situ polymerization process, respectively. The structure, magnetic properties and microwave absorption properties of the samples were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and vector network analyzer, respectively. The particle size of SrSm0.3Fe11.7O19 was about 35 nm by using XRD. The ferrite successfully packed by PANI. PANI/SrSm0.3Fe11.7O19 possessed the best absorption property with the optimum matching thickness of 3 mm in the frequency of 2–18 GHz. The value of the maximum reflection loss (RL) were −26.0 dB at 14.2 GHz with the 6.5 GHz bandwidth and −24.0 dB at 13.8 GHz with the 7.9 GHz bandwidth for the samples with 10 wt% and 20 wt% ferrite, respectively. |
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| Keywords: | Microwave absorption properties Polyaniline Sm-doped strontium ferrite Nanocomposite |
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