Magnetization Statics and Ultrafast Photoinduced Dynamics in Co/garnet Heterostructures
( Magnetic Materials )
Publication series ： Magnetic Materials
Author： Andrzej Stupakiewicz
Publisher： IntechOpen
Publication year： 2016
E-ISBN: INT6149762542
P-ISBN(Paperback): 9789535124276
P-ISBN(Hardback): 9789535124283
Subject： TB General Industrial Technology
Keyword： 一般工业技术
Language： ENG
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Magnetization Statics and Ultrafast Photoinduced Dynamics in Co/garnet Heterostructures
Description
We demonstrate experimental studies of the magnetization behavior from statics to ultrafast photoinduced dynamics with high temporal resolution in ultrathin Co/garnet heterostructures with a sub-nanometer roughness at the interface. We report on modulation of spin precession in Co/garnet heterostructures with distinct frequencies and show that the excitation efficiency of these precessions strongly depends on the amplitude and the direction of external magnetic field. Furthermore, it is shown that the magnetization precession in the garnet film can be manipulated by the strong magnetostatic coupling between Co and garnet layers. These findings could provide new possibilities in all-optical excitation and local spin manipulation by polarized femtosecond pulses for the application in nanodevices with high-speed switching.
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