Skip to Main content Skip to Navigation
Journal articles

Element Selective Probe of the Ultra-Fast Magnetic Response to an Element Selective Excitation in Fe-Ni Compounds Using a Two-Color FEL Source

Abstract : The potential of the two-color mode implemented at the FERMI free-electron laser (FEL) source for pumping and probing selectively different atomic species has been demonstrated by time-resolved scattering experiments with permalloy (FeNi alloy) and NiFe$_2$O$_4$ samples. We monitored the ultra-fast demagnetization of Ni induced by the pump FEL pulse, by tuning the linearly-polarized FEL probe pulse to the Ni-3p resonance and measuring the scattered intensity in the transverse magneto-optical Kerr effect geometry. The measurements were performed by varying the intensity of the FEL pump pulse, tuning its wavelength to and off of the Fe-3p resonance, and by spanning the FEL probe pulse delays across the 300–900 fs range. The obtained results have evidenced that for the case of NiFe$_2$O$_4$, there is a sensible difference in the magnetic response at the Ni site when the pump pulse causes electronic excitations at the Fe site.
Document type :
Journal articles
Complete list of metadata

Cited literature [27 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01448509
Contributor : Maurizio Sacchi <>
Submitted on : Saturday, January 28, 2017 - 10:43:00 AM
Last modification on : Thursday, July 1, 2021 - 5:32:45 PM
Long-term archiving on: : Saturday, April 29, 2017 - 12:39:45 PM

File

photonics-04-00006.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Eugenio Ferrari, Carlo Spezzani, Franck Fortuna, Renaud Delaunay, Franck Vidal, et al.. Element Selective Probe of the Ultra-Fast Magnetic Response to an Element Selective Excitation in Fe-Ni Compounds Using a Two-Color FEL Source. Photonics, MDPI, 2017, 4, pp.6. ⟨10.3390/photonics4010006⟩. ⟨hal-01448509⟩

Share

Metrics

Record views

1693

Files downloads

623