Abstract
In order to improve the margin for operating temperature changes and to achieve high recording performance, Co-Sn substituted Ba-ferrite particles were investigated. It was found that BaFe12-xCoxSnxO19 particles with x = 1.10 to 1.40 not only have a coercivity suitable for magnetic recording, but also have a very low temperature coefficient of coercivity Delta H-c/Delta T in the temperature range from 0 to 60 degrees C.
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