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Synthesis and Structure of Cobalt Nanocoatings on Porous Aluminum Oxideстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
- Авторы: Valeev R.G., Alalykin A.S., Beltiukov A.N., Kriventsov V.V.
- Журнал: Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
- Том: 17
- Номер: 6
- Год издания: 2023
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 1242
- Последняя страница: 1247
- DOI: 10.1134/s1027451023060228
- Аннотация: The results of studying the morphology and local atomic structure of cobalt coatings deposited by magnetron sputtering on nanostructured surfaces of porous aluminum oxide with different morphology specified by the anodizing voltage in solutions of sulfuric (25 V) and oxalic (40 and 120 V) acids are presented. Using scanning electron microscopy and atomic force microscopy, it is shown that the coatings have morphological features, which are hexagonally arranged nanoparticles formed at the boundaries between pores. With an increase in the size of nanopores on the surface of the substrates, the size and shape of the morphological features of the deposited coatings change. According to X-ray absorption fine structure spectroscopy and fine structure spectroscopy of the near region of the X-ray absorption edge, changes occur in the local atomic structure of cobalt; in particular, cobalt in the sample of the coating deposited onto the surface of porous aluminum oxide obtained by anodizing at a voltage (25 V) in sulfuric acid is oxidized more strongly, which is related to greater chemical activity due to the smaller sizes of nanoparticles that make up the coating. The obtained results will allow for further directed modification in the formation of structurally sensitive properties, such as chemical and electrochemical activity, and magnetic sensitivity of the coatings obtained.
- Добавил в систему: Валеев Ришат Галеевич