| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-641 - C8-642 | |
| DOI | https://doi.org/10.1051/jphyscol:19888290 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-641-C8-642
DOI: 10.1051/jphyscol:19888290
1 Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Yokohama 223, Japan
2 Sumitomo Special Metals Co. Ltd., Egawa 2-15-17, Mishima-gun, Osaka 618, Japan
J. Phys. Colloques 49 (1988) C8-641-C8-642
DOI: 10.1051/jphyscol:19888290
EFFECT OF SURFACE CONDITIONS ON COERCIVITIES FOR Nd-Fe-B MAGNETS
Y. Otani1, H. Miyajima1, S. Chikazumi1, S. Hirosawa2 et M. Sagawa21 Department of Physics, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Yokohama 223, Japan
2 Sumitomo Special Metals Co. Ltd., Egawa 2-15-17, Mishima-gun, Osaka 618, Japan
Abstract
Hysteresis loops of Nd-Fe-B magnets with different surface roughness are measured in order to investigate the surface effect on nucleation for magnetization reversal. The roughness affects both coercivity and the demagnetization process. This behavior is considered to be caused by the 90° domain wall pinning of the line scratches.