Generation of strong inhomogeneous stray fields by high-anisotropy permanent magnets

Magnetic stray fields for systems of permanent magnets with high magnetic anisotropy are calculated and measured. It is shown that intensity of these fields exceeds value of an induction of a material of magnets in some time. Besides, these fields are characterized by high gradients, and size H∇H ca...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2004-10, Vol.281 (2-3), p.326-335
Hauptverfasser:	Samofalov, V.N., Ravlik, A.G., Belozorov, D.P., Avramenko, B.A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Coercive force Condensed matter: electronic structure, electrical, magnetic, and optical properties Demagnetizing field Exact sciences and technology Giant anisotropy GMR sensor High-gradient field Kittel domain structure Magnetic properties and materials Permanent magnet Permanent magnets Physics Saturation magnetization Stray field Studies of specific magnetic materials
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Beschreibung
Zusammenfassung:	Magnetic stray fields for systems of permanent magnets with high magnetic anisotropy are calculated and measured. It is shown that intensity of these fields exceeds value of an induction of a material of magnets in some time. Besides, these fields are characterized by high gradients, and size H∇H can reach values up to1010–1011Oe2/cm. Estimations of extremely achievable fields and their gradients are made.
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2004.04.122