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Interface and bulk magnetization dynamics in biaxial Fe/Cr structures induced by ultrashort optical pulses
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10.1063/1.3005884
/content/aip/journal/jap/104/8/10.1063/1.3005884
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/8/10.1063/1.3005884
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Figures

Image of FIG. 1.
FIG. 1.

Geometry of the all-optical TR-MOKE and SHG pump-probe experiment for a fourfold anisotropic system: Here, the hard and easy axes correspond to the [110] and [100]-type crystallographic directions in the Fe film plane, respectively. is a laboratory coordinate system; the external field; : azimuth of the hard axis ; : angle between magnetization and hard axis ; : azimuthal angle of ; : angle of incidence.

Image of FIG. 2.
FIG. 2.

Time profiles of (a) the MSHG and (b) the Kerr rotation in polarization combination for a Fe (26 nm)/Cr (2 nm) bilayer at and : A constant offset of about 2500 counts is subtracted in (a) for clarity. (c) TR-MOKE and TR-MSHG signals on an expanded time scale reveal a phase shift.

Image of FIG. 3.
FIG. 3.

Fourier transforms of the (a) TR-MOKE and (b) TR-MSHG signals for Fe (26 nm)/Cr (2 nm) and Fe (32 nm)/Cr (2 nm) films measured under the same conditions as in Fig. 2.

Image of FIG. 4.
FIG. 4.

Magnetic field dependence of the MSHG intensity in (a) Fe (26 nm) and (b) Fe (34 nm) films: The red line shows calculations using Eq. (1) at the following set of parameters (counts), (counts), (counts) for Fe (26 nm) film and (counts), (counts), (counts) for Fe (34 nm) film.

Image of FIG. 5.
FIG. 5.

(a) Experimental (black) and calculated (red) temporal MSHG intensity variations in Fe (26 nm) film after applying an ultrashort laser pulse: The calculations are performed using Eq. (1) and the parameters obtained by fitting the static MSHG field dependencies shown in Fig. 4. (b) Fourier spectrum of the calculated time profile in (a).

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/content/aip/journal/jap/104/8/10.1063/1.3005884
2008-10-31
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interface and bulk magnetization dynamics in biaxial Fe/Cr structures induced by ultrashort optical pulses
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/8/10.1063/1.3005884
10.1063/1.3005884
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