Features of Helium-Vacancy Complex Formation at the Zr/Nb Interface; Materials; Vol. 16, iss. 10

Features of Helium-Vacancy Complex Formation at the Zr/Nb Interface; Materials; Vol. 16, iss. 10

Detaylı Bibliyografya
Parent link:	Materials Vol. 16, iss. 10.— 2023.— [3742, 11 p.]
Yazar:	Svyatkin L. A. Leonid Aleksandrovich
Müşterek Yazar:	Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Отделение экспериментальной физики
Diğer Yazarlar:	Terenteva D. V. Daria Vitalevna, Laptev R. S. Roman Sergeevich
Özet:	Title screen A first-principles study of the atomic structure and electron density distribution at the Zr/Nb interface under the influence of helium impurities and helium–vacancy complexes was performed using the optimised Vanderbilt pseudopotential method. For the determination of the preferred positions of the helium atom, the vacancy and the helium–vacancy complex at the interface, the formation energy of the Zr-Nb-He system has been calculated. The preferred positions of the helium atoms are in the first two atomic layers of Zr at the interface, where helium–vacancy complexes form. This leads to a noticeable increase in the size of the reduced electron density areas induced by vacancies in the first Zr layers at the interface. The formation of the helium–vacancy complex reduces the size of the reduced electron density areas in the third Zr and Nb layers as well as in the Zr and Nb bulk. Vacancies in the first niobium layer near the interface attract the nearest zirconium atoms and partially replenish the electron density. This may indicate a possible self-healing of this type of defect.
Dil:	İngilizce
Baskı/Yayın Bilgisi:	2023
Konular:	электронный ресурс труды учёных ТПУ nanoscale multilayer coatings helium vacancy zirconium/niobium interface density functional theory наноразмерные многослойные покрытия гелий цирконий-ниобиевый сплав теория функционала плотности
Online Erişim:	http://earchive.tpu.ru/handle/11683/132553 https://doi.org/10.3390/ma16103742
Materyal Türü:	Elektronik Kitap Bölümü
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669607

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