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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2007, Volume 86, Issue 11, Pages 838–840
(Mi jetpl1348)
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CONDENSED MATTER
Order-disorder phase transition in CoPd thin films
E. M. Artem'ev, M. E. Artem'ev Siberian Federal University
Abstract:
The thin films of a CoPd alloy in the equiatomic composition region are prepared by condensation at different substrate temperatures. The substrate temperature is varied from the liquid nitrogen temperature to +280°C. At low substrate temperatures, the crystal structure of the condensed films is the single-crystal blocks of the hexagonal close-packed (hcp) phase. As the substrate temperature is further increased, the domains characterized in the initial state by the microdiffraction patterns in the form of a diffuse halo appear in the films, and these domains have a clear-cut boundary with the regions indicated by point reflections in the electron diffraction patterns. At substrate temperatures from +150 to 160°C, the CoPd alloy films in the equiatomic composition region are fully amorphous. The given state is a polymorphic transformation of the martensitic type. It arises in the martensitic transformation of the low-temperature hcp phase to the high-temperature fcc phase.
Received: 26.10.2007
Citation:
E. M. Artem'ev, M. E. Artem'ev, “Order-disorder phase transition in CoPd thin films”, Pis'ma v Zh. Èksper. Teoret. Fiz., 86:11 (2007), 838–840; JETP Letters, 86:11 (2007), 727–729
Linking options:
https://www.mathnet.ru/eng/jetpl1348 https://www.mathnet.ru/eng/jetpl/v86/i11/p838
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Statistics & downloads: |
Abstract page: | 245 | Full-text PDF : | 82 | References: | 38 |
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