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Synthesis, structure and superconducting properties of laminated thin film composites of YBа2 Cu3 O7–d /Y2 O3 as components of 2G HTS wiresстатья
Статья опубликована в журнале из списка RSCI Web of Science
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из перечня ВАК
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 3 ноября 2021 г.
- Авторы: Shchukin Alexander E., Kaul Andrey R., Vasiliev Alexander L., Rudnev Igor A.
- Журнал: Конденсированные среды и межфазные границы
- Том: 23
- Номер: 1
- Год издания: 2021
- Первая страница: 122
- Последняя страница: 139
- Номер статьи: 7
- DOI: 10.17308/kcmf.2021.23/3313
- Аннотация: 2G HTS wires are capable of transferring huge amounts of electrical energy without loss. An increase in the current-carrying capacity in these materials is possible due to an increase in the thickness of the superconducting layer; however, there is a problem with the appearance of impurity orientations and other defects with increasing thickness. We have proposed a solution of this problem by increasing the thickness of the superconducting layer by the MOCVD method using interlayers of yttrium oxide.The aim of this study was the production of thick composite films with yttrium oxide interlayers and high critical current density. In addition, we want to show the effectiveness of the approach of introducing yttrium oxide interlayers for the reduction of the number of parasitic orientations and defects with an increase in HTS film thickness.The deposition of YB\u04302Cu3O7\u2013dand Y2O3 films was carried out layer by layer using reel-to-reel MOCVD equipment. A 12 mm wire of the following architecture was used as a substrate: 200 nm CeO2(Gd2O3)/30\u201350 nm LaMnO3/5\u20137 nm IBAD-MgO/50 nm LaMnO3/50 nm Al2O3/60 \u03bc Hastelloy 276. The resulting films were annealed in oxygen for obtaining the orthorhombic YBCO phase. YB\u04302Cu3O7\u2013d/Y2O3composites were obtained. In these composites, obtained using the MOCVD method, the amount of side (\u0441\u2551) orientation of the HTS layer was reduced and high values of the critical current density, exceeding 1 MA/cm at a thickness of > 2 \u03bcm remained. The efficiency of the approach of introducing yttrium oxide interlayers for the increase in the current characteristics with increasing film thickness was shown. It was found that further thickening of films with interlayers is prevented by the formation of nanopores, reducing the critical current density.
- Добавил в систему: Кауль Андрей Рафаилович