Limitation of the Allowed Coercive Force Caused by the Scattering Field of Magnet

Limitation of the Allowed Coercive Force Caused by the Scattering Field of Magnet

It is shown that the shape of a sample determines the allowed lower-bound limit of the coercive force of material that can be used for fabrication of magnets with the given shape. Rings with radial magnetization are used as examples to show that such samples can be made of only rare-earth alloys wit...

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Veröffentlicht in:Technical physics 2019-07, Vol.64 (7), p.994-997
Hauptverfasser: Moiseeva, N. S., Rezchikova, I. I., Korolev, D. V., Morgunov, R. B., Piskorskii, V. P.
Format: Artikel
Sprache:eng
Schlagworte:
Classical and Continuum Physics
Coercivity
Lower bounds
Magnetization
Magnets
Magnets, Permanent
Physics
Physics and Astronomy
Rare earth alloys
Solid State
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Zusammenfassung:It is shown that the shape of a sample determines the allowed lower-bound limit of the coercive force of material that can be used for fabrication of magnets with the given shape. Rings with radial magnetization are used as examples to show that such samples can be made of only rare-earth alloys with the coercive force that is sufficiently high to satisfy technical requirements at the maximum allowed working temperature of the magnet.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784219070168