Abstract
This paper reports on the results of investigations into the temperature and spectral dependences of the magnetic circular dichroism in Dy1−x Nix-Ni bilayer films prepared through thermal sputter deposition of components under ultrahigh vacuum. The distribution of the components over the layer thickness is examined by Auger spectroscopy. The nickel content x in Dy1−x Nix layers varies from 0.005 to 0.06. It is shown that, in the temperature range 80–300 K, the contribution made to the magnetic circular dichroism by a Dy1−x Nix layer in a bilayer film with a nickel content higher than the threshold value is approximately equal to the magnetic circular dichroism observed in an isolated Dy1−x Nix film at temperatures below the temperature of the phase transition to a ferromagnetic state (∼100 K). This phenomenon is explained by magnetic ordering in the Dy1−x Nix layer of the bilayer film due to the combined effect of two factors, namely, the incorporation of nickel into a dysprosium layer and the presence of a continuous nickel sublayer in the film.
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Translated from Fizika Tverdogo Tela, Vol. 45, No. 8, 2003, pp. 1423–1428.
Original Russian Text Copyright © 2003 by Édelman, Markov, Ovchinnikov, Khudyakov, Zabluda, Kesler, Bondarenko.
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Édelman, I.S., Markov, V.V., Ovchinnikov, S.G. et al. Effect of nickel on the magnetic state of dysprosium in Dy1−x Nix-Ni bilayer films. Phys. Solid State 45, 1493–1499 (2003). https://doi.org/10.1134/1.1602886
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DOI: https://doi.org/10.1134/1.1602886