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Title:Element-resolved study on the influence of a magnetic dopant on the exchange interaction in FePt on ultrashort timescales
Authors:Urbančič, Jurij (Author)
et al.
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Language:English
Work type:Not categorized (r6)
Tipology:1.12 - Published Scientific Conference Contribution Abstract
Organization:UNG - University of Nova Gorica
Abstract:In this study, we investigate the optically induced ultrafast demagnetization dynamics of a FePt alloy doped with Mn atoms on the characteristic timescale of the exchange interaction of a few femtoseconds. We use high harmonic generation with photon energies in the XUV to gain elemental resolution in a femtosecond magneto-optical Kerr-effect experiment [1] in transversal geometry. Following up on earlier experiments, which showed the importance of the exchange interaction in the demagnetization process in alloys [2,3], we see clear differences in the dynamical responses of the three elements Fe, Pt, and Mn. Our results suggest, that the exchange coupling between the magnetic moments of the FePt alloy and the Mn dopant changes on ultrashort timescales.
Keywords:FePt, High Harmonic Generation, Laser, Magnetic Materials
Year of publishing:2017
COBISS_ID:16576515  Link is opened in a new window
URN:URN:SI:UNG:REP:PTVHNT0R
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Record is a part of a monograph

Title:DPG-Frühjahrstagungen 2017
Place of publishing:Dresden
Year of publishing:2017

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