Mechanism of magnetization reversal in Nd{sub 15.1}Fe{sub 76.9}B{sub 8} permanent magnets

Journal Article · Tue Mar 01 00:00:00 EST 1994 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.312431· OSTI ID:40216

Plusa, D ^[1]

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1. Technical Univ., Czestochowa (Poland). Inst. of Physics

Major and minor hysteresis loop measurements have been performed on Nd{sub 15.1}Fe{sub 76.9}B{sub 8} sintered magnet. The coercivity as a function of the maximum magnetizing field has been determined. This dependence appeared to be typical of nucleation hardened materials. The domain structure behavior during the magnetization reversal has been observed on the surface parallel to the alignment direction of the sample. Domain structure photographs have been correlated with suitable points on both virgin and demagnetization curves, respectively. It was stated from this observation that the demagnetization process occurs by the nucleation of reversed domains at the grain boundaries.

• OSTI ID: 40216
• Report Number(s): CONF-930860-; ISSN 0018-9464; TRN: IM9520%%411
• Journal Information: IEEE Transactions on Magnetics, Vol. 30, Issue 2Pt2; Conference: EMMA `93: 5th European magnetic materials and applications conference, Kosice (Slovakia), 24-27 Aug 1993; Other Information: PBD: Mar 1994
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
PERMANENT MAGNETS
DEMAGNETIZATION
DOMAIN STRUCTURE
NEODYMIUM ALLOYS
IRON BASE ALLOYS
BORON ALLOYS
EXPERIMENTAL DATA