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| Authors | S Songlin, W. Dagula, O. Tegus, E.H. Bruck, F.R. de Boer, K.H.J. Buschow | | Title | Magnetic and magnetocaloric properties of Mn5Ge3-xSbx |
| Journal | Journal of Alloys and Compounds |
| Volume | 337 |
| Year | 2002 |
| Issue | 1-2 |
| Pages | 269-271 |
| ISSN | 09258388 |
| Faculty | Faculty of Science |
| Institute/dept. | FNWI: Van der Waals-Zeeman Institute (WZI) |
| Keywords | Transition metal compounds; X-ray diffraction; Magnetocaloric; Magnetic measurements |
| Abstract | We have studied the magnetic properties of Mn Ge Sb compounds with x50, 0.1, 0.2 and 0.3 by means of magnetisation 5 32x x
measurements at different temperatures and fields up to 5 T. The compounds crystallize in the hexagonal Mn Si -type structure with 5 3
space group P 6 /mcm. The compounds show enhanced Curie temperatures but decreasing average magnetic Mn moments with increasing 3
Sb content. The magnetic entropy changes in these compounds are determined from the temperature and field dependence of the
magnetisation using the thermodynamic Maxwell relation. Mn Ge exhibits considerably large magnetic entropy changes that are 5 3
comparable with that of Gd metal. The Sb substitution has two kinds of effects on the magnetocaloric effect (MCE) of Mn Ge Sb . 5 32x x
One is the magnetic entropy change that decreases with increasing Sb content, the other is the MCE peak that becomes broadened. |
| Document type | Article |
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