STRUCTURE AND COMPOSITION EVOLUTION a-Si/ZrO2 AND a-SiOx/ZrO2 MULTILAYERED NANOPERIODICAL STRUCTURES UNDER HIGH TEMPERATURE ANNEAL

Autor: Sergey Yu. Turishchev, Dmitry A. Koyuda, Alexey V. Ershov, Ulii A. Vainer, Tatiana V. Kulikova, Boris L. Agapov, Elena N. Zinchenko, Margarita V. Grechkina, Daria S. Usoltseva, Vladimir A. Terekhov
Jazyk: English<br />Russian
Rok vydání: 2018
Předmět:
Zdroj: Конденсированные среды и межфазные границы, Vol 20, Iss 3, Pp 477-485 (2018)
Druh dokumentu: article
ISSN: 1606-867X
DOI: 10.17308/kcmf.2018.20/586
Popis: With the use of scanning electron microscopy, atomic force microscopy and X-ray diffraction the morphology, composition and structure evolution of a-Si/ZrO2 and a-SiOx/ZrO2 multilayered nanoperiodical structures subjected to high temperature annealing were investigated. Each ZrO2 layers thickness was 2 nm while for a-Si or a-SiOx layers thickness was 8 nm with total number of layers 34 (a-SiO/ZrO2) and 43 (a-SiOx/ZrO2). Annealing was performed for 30 minutes at temperature of 1100 °С. Multilayered nanoperiodical structures have grainy relief with comparable morphology and size characteristics without noticeable dependence on layers interleaving sequence and their composition. 30 minutes anneal at 1100 °С for a-SiOx/ZrO2 multilayered nanoperiodical structures did not transform their surface. Under the same temperature for a-Si/ZrO2 multilayered nanoperiodical structures we observed noticeable changes in samples surface morphology as irregularities formation with 100 nm width and height that exceeds bilayer thickness. By X-ray diffraction technique the presence of thin ZrSi2 silicide layer is demonstrated in a-Si/ZrO2 structures as the result of silicon chemical interaction with zirconium dioxide under high temperature treatment of nanoperiodical multilayers.
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