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Laser-Induced Magnetization Dynamics of Lanthanide-Doped Permalloy Thin Films

URN to cite this document:
urn:nbn:de:bvb:355-epub-149122
DOI to cite this document:
10.5283/epub.14912
Radu, I. ; Woltersdorf, Georg ; Kiessling, M. ; Melnikov, A. ; Bovensiepen, U. ; Thiele, J. -U. ; Back, Christian H.
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Date of publication of this fulltext: 27 May 2010 10:34


Abstract

We investigate the effect of Ho, Dy, Tb, and Gd impurities on the femtosecond laser-induced magnetization dynamics of thin Permalloy films using the time-resolved magneto-optical Kerr effect. Varying the amount of Ho, Dy, Tb content from 0% to 8%, we observe a gradual change of the characteristic demagnetization time constant from approximate to 60 to approximate to 150 fs. In ...

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