Abstract
A study was made of the effect of the addition of the low-melting-point bismuth oxide on the phase composition and magnetic properties of the 12Fe2O3·3BaO·CoO system. The optimum Bi2O3 concentration, at which the key magnetic properties attain their maxima, is 1 wt.%. The influence exerted by bismuth oxide on the magnetic properties of the ferrite is associated with qualitative and quantitative changes in the phase composition and microstructure of specimens and possibly also with partial dissolution of the barium hexaferrite structure.
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