Abstract
The cationic distribution of Co 2+ in Sr 1− x La x Fe 12− x Co x O 19 hexagonal ferrite is investigated by Mössbauer spectrometry and Raman spectroscopy. The two complementary techniques lead to the same conclusion: the majority of the Co 2+ is substituted for Fe 3+ in the octahedral 4f 2 and 2a sites, in agreement with the magnetization measurements. A valence change of some Fe 3+ to Fe 2+ in the 2a site is also evidenced.
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