Magnetic and dielectric studies of barium hexaferrite (BaFe12O19) ceramic synthesized by chemical route
- 283 Downloads
Barium hexaferrite BaFe12O19 (BHF) ceramic was synthesized by chemical route on sintering at 1050 °C for 12 h. The synthesized material was characterized by XRD, SEM, AFM and TEM analysis. Metal oxide stretching frequencies corresponding to Fe-O, Ba-O, and Fe-O-Fe bands are confirmed by FTIR studies. The hexagonal nature of the BHF ceramic was confirmed by TEM analysis and Rietveld refinement with space group P63/mmc. The particle size observed by TEM is 175 nm. The root means square and average roughness were found to be 61.048 nm and 44.025 nm respectively. The M-T and M-H hysteresis loop indicates temperature dependent ferromagnetic behavior of BHF ceramic. The temperature and frequency dependent dielectric properties were explained by Maxwell-Wagner theory. The value of dielectric constant (ε′) for BHF ceramic was found to be 22× 103 at 100 Hz and 483 K.
KeywordsChemical route Rietveld refinement Dielectric properties Magnetic behavior
Authors would like to thanks, Prof. Rajeev Prakash, In-charge of Central Instrument Facility Center (CIFC) IIT (BHU) for providing SEM, TEM and MPMS facilities.
- 22.Y. Maswadeh, S.H. Mahmood, A. Awadallah, A.N. Aloqaily, Mater. Sci. Eng. 92, 012019 (2015)Google Scholar
- 29.M. George, S.S. Nair, K.A. Malini, P.A. Joy, M.R. Anantharaman, Appl. Phys. 40, 1593 (2007)Google Scholar
- 36.T. Wang, J. Hu, H. Yang, L. Jin, X. Wei, C. Li, F. Yan, Y. Lin, J. Appl. Phys. 121 (2017)Google Scholar
- 37.J.C. Dyre, T.B. Schroder, Am. Phys. Soc. 72, 873 (2000)Google Scholar