| Autor: |
C.J.M. Denissen, F.R. de Boer, T.H. Jacobs, R. Verhoef, J.J.M. Franse, K.H.J. Buschow |
| Rok vydání: |
1989 |
| Předmět: |
|
| Zdroj: |
Journal of Magnetism and Magnetic Materials. 80:41-44 |
| ISSN: |
0304-8853 |
| DOI: |
10.1016/0304-8853(89)90321-1 |
| Popis: |
The magnetic properties of the compounds Er 2 Fe 14− x Mn x have been determined by means of X-ray diffraction, magnetic measurement and 57 Fe Mossbauer spectroscopy. Magnetization measurements made in fields up to 38 T showed that the saturation moment exhibits a minimum at a Mn concentration corresponding to about x =2, due to the antiparallel coupling between the R and 3d sublattice magnetizations the latter becoming strongly reduced with increasing Mn concentration. The reduction of the 3d-sublattice magnetization is accompnied by a corresponding reduction in the 57 FE hyperfine fields and by a lowering of the Curie temperature and the spin orientation temperature. Most of the compounds investigated have a break in the magnetization curves measured at 4.2 K which is interpreted as the onset of decoupling between the antiparallel rare earth and 3d sublattices. A mean field analysis was used to derive the intersublattice molecular field coefficient n RT . |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
