- Tytuł:
- Ultrafast Magnetization Dynamics in Epitaxial Ni-Mn-Sn Heusler Alloy Film
- Autorzy:
-
Bonda, A.
Uba, S.
Załęski, K.
Dubowik, J.
Uba, L. - Powiązania:
- https://bibliotekanauki.pl/articles/1030478.pdf
- Data publikacji:
- 2018-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.78.Jp
75.50.-y
78.47.J-
75.30.-m
06.60.Jn
75.40.Gb - Opis:
- The work is devoted to studies of ultrafast magnetization dynamics induced by femtosecond laser pulses in ferromagnetic Ni-Mn-Sn shape memory Heusler alloy. We studied epitaxial thin Ni_{54.3}Mn_{31.9}Sn_{13.8} film deposited on (001) MgO substrate. Spin precession in an external magnetic field was triggered and detected by the time-resolved magneto-optical Kerr effect (TRMOKE) using pump-probe technique in dual color scheme experiment. Measurements were performed as a function of magnetic field H and pulse power P. The measured TRMOKE signal is composed of oscillatory and background components, both decaying exponentially in a nanosecond time scale. The precession frequency was determined and found to be varying in the range of 1-10 GHz with H up to 3 kOe and decreasing linearly with P. The dependence of Gilbert damping parameter α on H was determined and discussed.
- Źródło:
-
Acta Physica Polonica A; 2018, 133, 3; 501-504
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł