Properties of sintered magnets (Pr, Nd, Ce, Dy)(Fe, Co)B obtained from unrefined rare earth metals

Potapov M.V., Valeev R.A., Morgunov R.B., Piskorsky V.P.
UDC
621.318.1
DOI
10.18577/2307-6046-2025-0-2-65-74
Article PDF (Russian) (638.07 KB)
How to cite
Potapov M.V., Valeev R.A., Morgunov R.B., Piskorsky V.P. Properties of sintered magnets (Pr, Nd, Ce, Dy)(Fe, Co)B obtained from unrefined rare earth metals // Proceedings of VIAM. 2025. No. 2. DOI: 10.18577/2307-6046-2025-0-2-65-74. URL: https://test.viam.ru/en/journal/2025/2/5
Keywords
permanent magnets, rare-earth magnets, saturation magnetization, residual induction, coercive force, temperature coefficient of induction
Abstract

Sintered materials of the following composition (NdWPrpDyzCex)–(Fe1-yCoy)–B (w ≤ 0,44; p ≤ 0,45; x ≤ 0,13; z ≤ 0,41; y ≤ 0,26) were studied. Hysteresis curves of demagnetization by induction and magnetization are given. It was found that the admixture of neodymium and cerium in the studied quantities does not adversely affect the magnetic characteristics of sintered materials. Thus, suitable sintered materials can be made from insufficiently purified rare earth metals, although the value of the temperature coefficient of induction of materials of such composition is insufficient for use in navigation devices.

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