Chemical, electronic, and magnetic structure of LaFeCoSi alloy: Surface and bulk properties
| Title | Chemical, electronic, and magnetic structure of LaFeCoSi alloy: Surface and bulk properties |
| Publication Type | Journal Article |
| Year of Publication | 2014 |
| Authors | Lollobrigida, V, Basso, V, Borgatti, F, Torelli, P, Kuepferling, M, Coisson, M, Olivetti, ES, Celegato, F, Tortora, L, Stefani, G, Panaccione, G, Offi, F |
| Journal | Journal of applied physics |
| Volume | 115 |
| Pagination | 203901-1–203901-9 |
| ISSN | 0021-8979 |
| Keywords | CO, DISORDER, ENTROPY CHANGE, FE, LA(FE, METAMAGNETIC TRANSITION, photoemission, REFRIGERATION, SPECTRA |
| Abstract | We investigate the chemical, electronic, and magnetic structure of the magnetocaloric LaFeCoSi compound with bulk and surface sensitive techniques. We put in evidence that the surface retains a soft ferromagnetic behavior at temperatures higher than the Curie temperature of the bulk due to the presence of Fe clusters at the surface only. This peculiar magnetic surface effect is attributed to the exchange interaction between the ferromagnetic Fe clusters located at the surface and the bulk magnetocaloric alloy, and it is used here to monitor the magnetic properties of the alloy itself. |
| DOI | 10.1063/1.4879195 |
