Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1798753 | Journal of Magnetism and Magnetic Materials | 2016 | 7 Pages |
Abstract
Ba1âxCexFe12O19 (x=0.0, 0.05, 0.1, 0.15, and 0.2) polycrystalline samples were synthesized by the sol-gel method and characterized by thermogravimetric analysis (TG), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), vibrating sample magnetometer (VSM) and vector network analyzer. All the synthesized samples showed nearly single magnetoplumbite phase and an average particle size of the undoped sample of about 500Â nm decreasing with Ce doping content. The magnetization first increased and then decreased with the increase in Ce; on the other hand, coercivity showed no regular behavior with Ce content. Maximum values of magnetization (53Â emu/g) and coercivity (5088Â Oe) were obtained for x=0.1. Microwave absorption measured within the 2-18 microwave frequency range indicated maximum reflection losses of â16.74Â dB at 10.3Â GHz and of â20.47Â dB at 16.22Â GHz for x=0.15 and x=0.2 samples, respectively. The present investigation suggests Ce substituted barium hexaferrite as a promising candidate for microwave absorbing materials.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Z. Mosleh, P. Kameli, A. Poorbaferani, M. Ranjbar, H. Salamati,