Structural and Magnetic Properties of BaFe₁₂₋₂ₓCoₓTiₓO₁₉ Powders Prepared by the Glass Crystallization Method
The glass crystallization method is shown to be suitable for preparing BaFe12-2xCox TixO19 powders with a nearly perfect crystallographic structure and a narrow particle size distribution. The dependences of the specific magnetization, the coercivity, and the particle size distribution on both the annealing temperature and the Co-Ti content correlate in a characteristic way. Furthermore, the lattice parameters, the specific surfaces and the thickness of the effective nonmagnetic surface layer were determined. The coercivity of the hexaferrite magnetic tapes is more than 8 × 103 A/m higher than for the corresponding powders.
P. Görnert et al., "Structural and Magnetic Properties of BaFe₁₂₋₂ₓCoₓTiₓO₁₉ Powders Prepared by the Glass Crystallization Method," IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers (IEEE), Jan 1990.
The definitive version is available at http://dx.doi.org/10.1109/20.50475
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© 1990 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.