| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-639 - C8-640 | |
| DOI | https://doi.org/10.1051/jphyscol:19888289 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-639-C8-640
DOI: 10.1051/jphyscol:19888289
1 Department of Physics, Carwell Hall, Kansas State University, Manhattan, KS 66506, U.S.A.
2 On leave from the Institute of Physics, Warsaw Technical University, Warsaw, Poland.
J. Phys. Colloques 49 (1988) C8-639-C8-640
DOI: 10.1051/jphyscol:19888289
ORIGIN OF HIGH COERCIVITIES IN AS-CAST Dy-Fe-C MAGNETS
G. C. Hadjipanayis1, N. Venkateswaran1 et J. Strzeszewski21 Department of Physics, Carwell Hall, Kansas State University, Manhattan, KS 66506, U.S.A.
2 On leave from the Institute of Physics, Warsaw Technical University, Warsaw, Poland.
Abstract
As-cast Dy15Fe77C8 alloys develop high coercivities after a heat treatment at 900 °C. Magnetic and microstructure measurements show the presence of two phases : the anisotropic Dy2Fe14C phase and a DyFeC phase with Tc around 40 K. The high coercivities are attributed to localized domain wall pinning at the boundaries between the Dy2Fe14C and DyFeC phases.