Preparation of M-Ba-ferrite fine powders by sugar-nitrates process

In this paper, fine M-type barium hexaferrite (M-Ba-ferrite) particles were synthesized from sugar and nitrates by simple route, which revealed the feasibility of using sugar as chelating agent in forming solid precursors of BaFe12O19. The effects of factors, such as the molar ratio of Fe/Ba, calcin...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2006-06, Vol.41 (12), p.3867-3871
Main Authors: Tang, Xin, Zhao, Bin Yuan, Hu, Ke Ao
Format: Article
Language:English
Subjects:
Barium
Barium compounds
Barium hexaferrite
Calcination
Chelation
Chemistry
Coercive force
Coercivity
Colloidal state and disperse state
Exact sciences and technology
Ferrites
General and physical chemistry
Ions
Iron
Magnetic properties
Magnetic saturation
Magnetization
Materials science
Morphology
Nitrates
Powders
Remanence
Roasting
Sugars
Transmission electron microscopy
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, fine M-type barium hexaferrite (M-Ba-ferrite) particles were synthesized from sugar and nitrates by simple route, which revealed the feasibility of using sugar as chelating agent in forming solid precursors of BaFe12O19. The effects of factors, such as the molar ratio of Fe/Ba, calcination temperature and time, on the morphology, the phase component and the magnetic properties of M-type barium hexaferrite particles were studied by means of X-ray diffraction, infrared spectroscopy, transmission electron microscopy and physical property measurement system. The results showed that the molar ratio of Ba2+ to Fe3+ influenced significantly on the formation of the single phase barium ferrite. The hexagonal platelet barium ferrite particles with a specific saturation magnetization of 64.48 emu/g, remanence magnetization (Mr) of 33.84 emu/g, and coercive force (Hc) of 1848.85 Oe were obtained when the molar ratio of Fe/Ba was 11.5 and the calcination temperature was 1100 °C for 2 h.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-006-6676-7