期刊
IEEE MAGNETICS LETTERS
卷 7, 期 -, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMAG.2015.2514081
关键词
Nanotechnology; magnetization dynamics; cobalt; garnets; magnetic anisotropy; magnetic films; magneto-optic effects
资金
- National Science Centre Poland [DEC-2013/09/B/ST3/02669]
- SYMPHONY grant within the Foundation for Polish Science Team Program - EU European Regional Development Fund, OPIE
- Polish National Science Centre for HARMONIA [2012/06/M/ST3/00475]
We report experimental studies on ultrafast laser-induced magnetization dynamics on a picosecond time scale in ultrathin Co/garnet heterostructures. We compare polarization-sensitive nonthermal dynamics in garnet triggered via photoinduced anisotropy with the thermal dynamics in 2 nm Co films. The influence of Gilbert damping on frequency of magnetization precession under an external magnetic field in a garnet film is described. Thermal demagnetization with a 0.81 ps characteristic time is in good agreement with a two-temperature model of electron-lattice coupling.
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