- Tytuł:
- The Effect of Gd Impurities on the Physical Properties of Half-Metallic Ferromagnet $Co_2MnSi$
- Autorzy:
-
Grasin, R.
Vinteler, E.
Bezergheanu, A.
Rusu, C.
Pacurariu, R.
Deac, I.
Tetean, R. - Powiązania:
- https://bibliotekanauki.pl/articles/1535753.pdf
- Data publikacji:
- 2010-10
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.70.Ej
71.55.Ak
73.20.Hb - Opis:
- In this paper we report our experimental and theoretical studies on the effect of Gd impurity on the physical properties of the Heusler half-metallic ferromagnet $Co_2MnSi$. The analysis of the band structures of the doped alloy shows that the half-metallic properties are completely conserved if Gd substitutes Mn atoms. This effect is not determined by the spin-orbit interaction, but through the coupling between the R(4f) spin with the Mn(3d) itinerant electron spins. We evaluate the strength of such a coupling by calculating, in an ab initio fashion, the total energy of $Co_{16}GdMn_7Si_8$ compound for a parallel and antiparallel f-d coupling. The obtained magnetic moments of Co or Mn sites are in good agreement with the experimental ones.
- Źródło:
-
Acta Physica Polonica A; 2010, 118, 4; 648-651
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł