| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-429 - C8-430 | |
| DOI | https://doi.org/10.1051/jphyscol:19888196 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-429-C8-430
DOI: 10.1051/jphyscol:19888196
1 CEN-Grenoble, DRF/Service de Physique/MDIH, 85X-38041 Grenoble Cedex, France
2 Instituto de Fisica, Universidade de Sao Paulo, Brazil
J. Phys. Colloques 49 (1988) C8-429-C8-430
DOI: 10.1051/jphyscol:19888196
155Gd MOSSBAUER EXPERIMENTS ON (Gd0.8RE0.2)l+ε Fe4B4
J. L. Oddou1, M. Boge1, C. Jeandey1 et H. R. Rechenberg21 CEN-Grenoble, DRF/Service de Physique/MDIH, 85X-38041 Grenoble Cedex, France
2 Instituto de Fisica, Universidade de Sao Paulo, Brazil
Abstract
Mössbauer experiments using the 86.5 keV resonance of 155Gd have been performed on Gd1+εFe4B4 with and without substitution of 20 % of Gd by Nd or Sm. All these alloys are characterized by a very large quadrupolar interaction. At T = 4.2 K, i.e. below the magnetic temperature order, the Mössbauer spectra are quite different for the three alloys, owing to the different direction of the Gd moments with respect to the c-axis. The preferred moment direction for the Gd atoms is imposed by the R.E. atoms in substitution for Gd, and determined by a magnetic anisotropy resulting chiefly from the second order crystal electric field interactions.