Annealing of aluminum thin films deposited on silica

被引:0
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作者
Fleury, Vincent [1 ]
Balazs, Lazlo [1 ]
机构
[1] Ecole Polytechnique, Palaiseau, France
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关键词
Annealing - Fractals - Morphology - Reaction kinetics - Redox reactions - Silica - Thermal effects - Thermodynamics - Thin films;
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摘要
The reaction of aluminum on silica has long been known. We present a morphological study of the small irregular transparent domains which form during the annealing of Al thin films on SiO2 at temperatures in the range 400-600 °C. We show that the oxidation of Al and the reduction of SiO2 proceed via irreversible growth of 2-D aggregates, which, in some regimes, are DLA-fractals. The morphological approach, which is complementary to the purely thermodynamic studies done so far, gives information on the chemical process.
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页码:640 / 654
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