Analysis of hysteresis loops in Nd-Fe-B sintered magnets
- 1 November 1986
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 60 (9) , 3263-3265
- https://doi.org/10.1063/1.337715
Abstract
At room temperature, a kink in negative fields appears in the hysteresis loops of Nd-Fe-B permanent magnets. This phenomenon can be related to the fact that the grains at the surface of the magnet exhibit a strongly reduced coercivity compared to those of the bulk. Below 130 K a kink of another nature develops. It is strictly reversible and amounts to about 30% of the spontaneous magnetization. It is caused by a combined effect of the spin reorientation occurring in the Nd2Fe14B phase and the incomplete alignment of the particles in the magnets.This publication has 2 references indexed in Scilit:
- Magnetic properties of Y2Fe14B and Nd2Fe14B single crystalsPublished by Elsevier ,2002
- Domain behavior in sintered Nd-Fe-B magnets during field-induced and thermal magnetization changeJournal of Applied Physics, 1985