| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1626986 | Journal of Alloys and Compounds | 2007 | 5 Pages |
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 α-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 HCl. HCl-washing is not effective for the elimination of α-Fe2O3 phase. Consequently, we succeed to obtain high quality single phase BaFe12O19 powders at low Fe/Ba ratios. Highest specific saturation magnetization Ms of the powders with Fe/Ba ratio of 2 was determined to be 66.7 emu/g.
