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Structural and magnetic properties of Ba0.7Sr0.3Fe12 ? 2x Co x Ti x O19 M-type hexaferrites |
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| Authors: | E D Solov’eva E V Pashkova A E Perekos B S Khomenko A G Belous |
| Affiliation: | 1133. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, Kyiv, 03142, Ukraine 2133. Kurdyumov Institute of Metal Physics, National Academy of Sciences of Ukraine, pr. Vernadskogo 36, Kyiv, 03680, Ukraine |
| Abstract: | We have studied the effect of “double” substitution in Ba0.7Sr0.3Fe12 ? 2x Co x Ti x O19 on the structural and magnetic properties of M-type barium hexaferrite. The basic composition of Ba1 ? x Sr x Fe12O19 obtained by heat-treating carbonate-hydroxide precipitates has been optimized (x = 0.3). 2Fe3+ → Co2+ + Ti4+ substitutions considerably reduce the coercive force (H c) and increase the magnetization (M s) relative to Ba0.7Sr0.3Fe12 O19. |
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