Investigations on phase transitions within thin Al2O3 layers on NiAl(001) — HREELS on aluminum oxide films
作者： P. Gassmann , R. Franchy , H. Ibach
DOI: 10.1016/0039-6028(94)90572-X
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摘要: Abstract We have investigated the phase transitions and structure of thin aluminum oxide layers on NiAl(001) using high-resolution electron energy loss spectroscopy (HREELS), low-energy diffraction (LEED) Auger (AES). The films were prepared either by oxygen adsorption at 300 K annealing to different temperatures or oxidation up 1500 K. demonstrated that in connection with LEED AES data HREEL spectra allow determination alumina layers. Different phases Al2O3 been observed depending temperature. losses are high-frequency branches ω+ Fuchs-Kliewer (FK) surface phonons. Calculated based dielectric theory reproduce measured very well. thickness well-ordered θ-Al2O3 layer is estimated be about 10 A.
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sci-hub.se 参考文章(38)
Hans Lüth, Surfaces and interfaces of solids ,(1993)
P.H. Holloway, J.B. Hudson, Kinetics of the reaction of oxygen with clean nickel single crystal surfaces: I. Ni(100) surface Surface Science. ,vol. 43, pp. 123- 140 ,(1974) , 10.1016/0039-6028(74)90223-4
Ugo Bardi, Andrea Atrei, Gianfranco Rovida, Initial stages of oxidation of the Ni3Al alloy: structure and composition of the aluminum oxide overlayer studied by XPS, LEIS and LEED Surface Science. ,vol. 268, pp. 87- 97 ,(1992) , 10.1016/0039-6028(92)90952-3
J. L. Erskine, R. L. Strong, High-resolution electron-energy-loss-spectroscopy study of the oxidation of Al(111) Physical Review B. ,vol. 25, pp. 5547- 5550 ,(1982) , 10.1103/PHYSREVB.25.5547
P. Senet, Ph. Lambin, J.-P. Vigneron, I. Derycke, A.A. Lucas, Phonon surface loss function of ionic-crystal films: A comparison between microscopic and macroscopic approaches Surface Science. ,vol. 226, pp. 307- 321 ,(1990) , 10.1016/0039-6028(90)90495-T
Jay Burton Benziger, EI Ko, Robert J Madix, The characterization of surface carbides of tungsten Journal of Catalysis. ,vol. 54, pp. 414- 425 ,(1978) , 10.1016/0021-9517(78)90089-1
G. Ertl, J. Küppers, Robert L. Park, Low Energy Electrons and Surface Chemistry ,(1986)
B. G. Frederick, G. Apai, T. N. Rhodin, Surface phonons in thin aluminum oxide films: Thickness, beam-energy, and symmetry-mixing effects Physical Review B. ,vol. 44, pp. 1880- 1890 ,(1991) , 10.1103/PHYSREVB.44.1880
Y. T. Chu, J. B. Bates, C. W. White, G. C. Farlow, Optical dielectric functions for amorphous Al2O3and γ‐Al2O3 Journal of Applied Physics. ,vol. 64, pp. 3727- 3730 ,(1988) , 10.1063/1.341367
Ph. Lambin, J.-P. Vigneron, A.A. Lucas, Computation of the surface electron-energy-loss spectrum in specular geometry for an arbitrary plane-stratified medium Computer Physics Communications. ,vol. 60, pp. 351- 364 ,(1990) , 10.1016/0010-4655(90)90034-X