Epitaxy of Pt thin films on (001) MgO—I. Interface energetics and misfit accommodation

Theoretical and experimental results on film/substrate interface energetics and misfit accommodation in Pt thin films on (001) MgO are reported. Two epitaxial orientations were observed in Pt films deposited on to (001) MgO substrates by electron beam evaporation: [110](001)Pt//[110](001) MgO and [1...

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Veröffentlicht in:	Acta materialia 1997-02, Vol.45 (2), p.869-878
Hauptverfasser:	McIntyre, P.C., Maggiore, C.J., Nastasi, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Metals. Metallurgy Physics Structure and morphology thickness Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Thin film structure and morphology
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Beschreibung
Zusammenfassung:	Theoretical and experimental results on film/substrate interface energetics and misfit accommodation in Pt thin films on (001) MgO are reported. Two epitaxial orientations were observed in Pt films deposited on to (001) MgO substrates by electron beam evaporation: [110](001)Pt//[110](001) MgO and [110](111)Pt//[110](001) MgO. O-lattice calculations were used to predict film/substrate interface structures and relative interfacial energies for these two epitaxial Pt film orientations. The interfacial misfit dislocation structure was characterized by weak beam transmission electron microscopy. Good agreement was found among the calculated relative interface energies, reports in the literature, and the present experimental data.
ISSN:	1359-6454 1873-2453
DOI:	10.1016/S1359-6454(96)00182-6