Ferrite magnetic material and ferrite sintered magnet
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United States of America Patent
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Jul 21, 2020
Grant Date -
Sep 27, 2018
app pub date -
Sep 1, 2016
filing date -
Oct 16, 2015
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Abstract
The present invention produces a ferrite magnetic material having a remarkably higher maximum energy product ((BH)max) than a conventional ferrite magnetic material through the induction of a high saturation magnetization and a high anisotropic magnetic field by simultaneously adding Co and Zn to substitute some of Fe and adjusting the content ratio of Zn/Co. In addition, the present invention can produce a desired magnetic material at a lower cost than a conventional CaLaCo-based ferrite magnetic material substituted with only Co by using Zn, which is relatively at least seven times cheaper than Co, together with Co.
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