Discussion of the coercivity mechanism of RE-TM-B permanent magnets
- 14 August 1992
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 25 (8), 1238-1242
- https://doi.org/10.1088/0022-3727/25/8/014
Abstract
It can be shown that the initial magnetization curves of DC demagnetized samples are well below those of thermally demagnetized samples, which has been explained by a localised weak-domain wall pinning model. The calculated results showed that there is no 0.3 limit for alpha kpin values. Therefore the value of 0.3 for the alpha kpin parameter is not a valid criterion by which to determine the coercivity mechanism.Keywords
This publication has 11 references indexed in Scilit:
- Magnetization curves of thermal, ac-field and dc-field demagnetized NdFeB magnetsJournal of Magnetism and Magnetic Materials, 1990
- Magnetization reversal in nucleation controlled magnets. I. TheoryJournal of Applied Physics, 1988
- Analysis of the magnetic hardening mechanism in RE-FeB permanent magnetsJournal of Magnetism and Magnetic Materials, 1988
- Domain wall pinning versus nucleation of reversed domains in R-Fe-B magnets (invited)Journal of Applied Physics, 1988
- Dependence of coercivity on the anisotropy field in the Nd2Fe14B-type sintered magnetsJournal of Applied Physics, 1987
- Magnetic hardening in iron-neodymium-boron permanent magnetsJournal of Applied Physics, 1985
- Micromagnetism in hard magnetic materialsJournal of Magnetism and Magnetic Materials, 1978
- The influence of planar defects on the coercive field of hard magnetic materialsApplied Physics A, 1977
- The temperature dependence of the coercive field of Co5Sm magnetsJournal of Magnetism and Magnetic Materials, 1977
- Virtues and Weaknesses of the Domain ConceptReviews of Modern Physics, 1945