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The role of defects in solid state dewetting of ultrathin Ag film on Si(557)
Scripta Materialia. 2021. Vol. 194.
Chaika A. N., Bozhko S. I., Sveklo I., Postnova E. Y., Semenov V. N., Bisht A., Rabkin E.
In press
We have studied the solid state dewetting of ten monolayer sthick Ag film deposited on periodicall ypatterned Si(557) surface. The annealing of the system in the ultra-high vacuum at the temperatures between 300 and 400°C resulted in full agglomeration of the film and formation of faceted single crystalline Ag nanoparticles exhibiting bimodal size distribution.We demonstrated that some particles contain screw dislocations producing a step on the upper particle facet.We related the bimodality in particles distribution with the ability of dislocation containing Ag particles to evolve by Ostwald ripening mechanism.
Priority areas:
engineering science
Language:
English
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СПб. : ФГБУ "ПИЯФ" НИЦ "Курчатовский институт", 2014
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Методами растровой электронной микроскопии, рентгеновского элементного микроанализа и рентгеноструктурного анализа, массспектрометрии кинетики термодесорбции и летучих соединений исследованы образцы углеситалла УСБ15 после облучения ионами с энергией 90 эВ из ускоренного потока кислородной плазмы. Обнаружено обогащение поверхности кислородом; структурные изменения после облучения не наблюдаются. Материал имеет мелкозернистую несовершенную кристаллическую структуру с очень низкой степенью графитизации. Термодесорбционная
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Smirnov I. S., Kondrashov P. E., Baranov A. M., Solid state Technology 1999 Vol. 42 No. 5 P. 53-58
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Муслимов А. Э., Буташин А. В., Михайлов В. И. et al., Кристаллография 2015 Т. 60 № 64 С. 630-633
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