Effect of La-Ni substitution on structural,magnetic and microwave absorption properties of barium ferrite |
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| Affiliation: | 1. School of Material Science and Engineering, Changzhou University, Changzhou 213164, China;2. School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, China;1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China;2. School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore;1. Postgraduate Program in Materials Engineering – PPGEM, Federal Institute of Education, Science and Technology of Maranhão – IFMA, Av. Getúlio Vargas, 04, Monte Castelo, CEP 65030-005, São Luis, MA, Brazil;2. Department of Electro-Electronics – DEE, Federal Institute of Education, Science and Technology of Maranhão – IFMA, São Luis, MA, Brazil;3. Materials Engineering Department – DEMA, Federal University of São Carlos - UFSCar, São Carlos, SP, Brazil;4. Department of Chemistry – DAQ, Federal Institute of Education, Science and Technology of Maranhão – IFMA, São Luis, MA, Brazil;5. Department of Physics – DEFIS, Federal Institute of Education, Science and Technology of Maranhão – IFMA, São Luis, MA, Brazil |
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| Abstract: | In this paper, La-Ni substituted barium ferrite nanoparticles were prepared by a co-precipitation method. The morphology, structure, magnetic and microwave absorption properties of samples were accomplished by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and vector network analysis. From the results evaluation, it can be seen that the magnetoplumbite structure for all of the samples have been formed and the average crystallite sizes of Ba1−xLaxFe12−xNixO19 nanoparticles within in the range of 50.9–65.5 nm. Ba0.9La0.1Fe11.9Ni0.1O19 exhibits a remarkable reflection loss of −13.5 dB at 13.05 GHz with a matching thickness of 1.5 mm. The reflection loss results indicate that Ba0.9La0.1Fe11.9Ni0.1O19 nanoparticles may be used as a potential for thin microwave absorbers. |
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| Keywords: | Barium ferrite Chemical synthesis Magnetic measurements Microwave absorption |
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