Finding optimal Fe/Ba ratio to obtain single phase BaFe12O19 prepared by ammonium nitrate melt technique

2007-01-31
Topal, Ugur
Ozkan, Husnu
Dorosinskii, Lev
In the present work, the magnetic properties and the phase composition of barium ferrite BaFe12O19 powders prepared by the ammonium nitrate melt technique with Fe/Ba ratios varying from 2 to 13 was investigated. We observed that BaFe2O4 phase is formed at low values of Fe/Ba ratios (2-6) and alpha-Fe2O3 phase is formed at high values of Fe/Ba ratio as secondary phases. BaFe2O4 phase could be easily eliminated from the structure by washing the annealed powders with diluted HCI.HCI-washing is not effective for the elimination of alpha-Fe2O3 phase. Consequently, we succeed to obtain high quality single phase BaFe12O19 Powders at low Fe/Ba ratios. Highest specific saturation magnetization M, of the powders with Fe/Ba ratio of 2 was determined to be 66.7 emu/g.
JOURNAL OF ALLOYS AND COMPOUNDS

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Citation Formats
U. Topal, H. Ozkan, and L. Dorosinskii, “Finding optimal Fe/Ba ratio to obtain single phase BaFe12O19 prepared by ammonium nitrate melt technique,” JOURNAL OF ALLOYS AND COMPOUNDS, pp. 17–21, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66321.