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Magnetic Study of Doped Ba Ferrites Prepared by Citrate Method |
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| Authors: | A Grusková J Sláma R Dosoudil D Kevická V Jančárik J Lipka |
| Institution: | (1) Department of Electrotechnology, Slovak University of Technology, Ilkovi ova 3, 812 19 Bratislava, Slovakia;(2) Department of Electromagnetic Theory, Slovak University of Technology, Ilkoviova 3, 812 19 Bratislava, Slovakia;(3) Department of Nuclear Physics and Technology, Slovak University of Technology, Ilkoviova 3, 812 19 Bratislava, Slovakia |
| Abstract: | The M-type barium ferrite is doped with either Co2+-Ti4+ or Co2+-Zr4+ pairs to reduce its intrinsically high uniaxial magnetic anisotropy in order to make fine particles for magnetic recording. The magnetic parameters were investigated by magnetic measurements and the Mössbauer spectroscopy. Compounds (BaF) obtained from BaCo
x
(Ti,Zr)
x
Fe12-2x
O19 with 0 x1.0 have been prepared by the modified citrate method with the initial ratio of Ba:Fe equal to 1:10.8. The substitution of Co - Ti or Co - Zr for Fe3+ ions affects mainly the positions 2a and 4f
2. Ba ferrite with the substitution x  0.8 is promising for perpendicular recording media applications. |
| Keywords: | hexagonal ferrites substitution effects recording media Mö ssbauer spectroscopy |
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