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A vitrifying structure transition in the Dy/Mo(112) adsorption system
Authors
A. Fedorus
A. Naumovets
+9 more
Braun O. M.
Fedorus A.
Fedorus A.
Gonchar F. M.
H. Pfnür
Jürgens D.
Loburets A. T.
Naumovets A. G.
V. Koval
Publication date
1 January 2001
Publisher
College Park, MD : American Institute of Physics
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Abstract
Annealing-driven irreversible structural transitions are studied by low-energy electron diffraction in submonolayer Dy films adsorbed on the Mo(112) surface. In a wide coverage range θ>0.07, Dy overlayers deposited at low temperatures (T≈100 K) are ordered and keep their structure upon annealing up to 350–600 K. Near θ=0.68, the overlayers are stable to high-temperature annealing (Ta=1000 K) as well, whereas the denser films are metastable and transform to more stable ordered structures. An unusual annealing effect is found for θ<0.58: the initially ordered metastable phases are replaced by phases having no extended order, which are assumed to be two-dimensional glasses. © 2001 American Institute of Physics
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Last time updated on 05/06/2019
Наукова електронна бібліотека періодичних видань НАН України (Vernadsky National Library of Ukraine)
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Institutionelles Repositorium der Leibniz Universität Hannover
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Last time updated on 18/04/2018