On the Coercivity Mechanism in Fe-(REM)-B Magnets

A model describing the remagnetization process in Fe‐Nd‐B‐type magnets is formulated. A poly‐crystalline magnet is regarded as an ensemble of clusters, consisting of grains mutually contacting with each other in places of magnetic isolation gaps. The remagnetization of a crystallite takes place by m...

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Veröffentlicht in:	Physica status solidi. A, Applied research Applied research, 1992-01, Vol.129 (1), p.263-269
Hauptverfasser:	Sazonov, S. N., Valiev, R. Z.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Condensed matter: electronic structure, electrical, magnetic, and optical properties Domain effects, magnetization curves, and hysteresis Exact sciences and technology Magnetic properties and materials Metals. Metallurgy Physics
Online-Zugang:	Volltext
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Zusammenfassung:	A model describing the remagnetization process in Fe‐Nd‐B‐type magnets is formulated. A poly‐crystalline magnet is regarded as an ensemble of clusters, consisting of grains mutually contacting with each other in places of magnetic isolation gaps. The remagnetization of a crystallite takes place by means of reversed domain nucleation in a region, joint with just the remagnetized one. The grain size dependence of the coercive force is determined and its correspondence with experimental data is discussed.
ISSN:	0031-8965 1521-396X
DOI:	10.1002/pssa.2211290126