A vitrifying structure transition in the Dy/Mo(112) adsorption system
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 anneali...
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| Datum: | 2001 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2001
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| Schriftenreihe: | Физика низких температур |
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/129017 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | A vitrifying structure transition in the Dy/Mo(112) adsorption system / A.Fedorus, V.Koval, A.Naumovets, H.Pfnür // Физика низких температур. — 2001. — Т. 27, № 9-10. — С. 1148-1152. — Бібліогр.: 12 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | 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. |
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