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- W3204388194 abstract "We have investigated the ultrafast laser-induced magnetization and reflectivity dynamics in the Fe3O4 thin film using all-optical pump–probe measurements. The high-quality of our sample is verified by the temperature-dependent static magnetic properties, showing a clear Verwey transition. Although the Fe3O4 is predicted to be a half-metal, the demagnetization process upon laser incident shows a transition-metal-like behavior. The demagnetization characteristic time has been found to be in sub-100 fs (fs) time scale, suggesting the dominant interaction of hole spin-flip processes. The spin relaxation process has been found to be around 600 fs, which is attributed to the electron–phonon coupling in accordance to the observed two electron–phonon coupling modes in reflectivity dynamics. Our results provide new insight into the ultrafast laser-induced spin dynamics in half-metallic ferrimagnet." @default.
- W3204388194 created "2021-10-11" @default.
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- W3204388194 date "2022-01-01" @default.
- W3204388194 modified "2023-10-14" @default.
- W3204388194 title "Sub-100 femtosecond time scale spin dynamics in epitaxial Fe3O4 thin film" @default.
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- W3204388194 doi "https://doi.org/10.1016/j.apsusc.2021.151456" @default.
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