Open AccessСверхпроводящий контакт для ВТСП-лент второго поколения
Author(s) -
И.В. Куликов,
М.Я. Черных,
Т.С. Крылова,
А.В. Овчаров,
И.А. Черных,
М.Л. Занавескин
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.07.47530.17639
Subject(s) - materials science , superconductivity , transmission electron microscopy , joint (building) , scanning electron microscope , phase (matter) , layer (electronics) , diffusion , epitaxy , crystallography , composite material , condensed matter physics , chemistry , nanotechnology , physics , thermodynamics , architectural engineering , organic chemistry , engineering
An approach of the epitaxial jointing of the GdBa_2Cu_3O_7 – δ-based tapes using the YBa_2Cu_3O_7 – δ layer is proposed. The structural and electrical characteristics of the formed joint have been investigated. Using the scanning transmission electron microscopy, the cross section of the joined region has been studied, partial melting of the YBa_2Cu_3O_7 – δ layer has been observed, and the solid-phase diffusion with the formation of the (Gd, Y)Ba_2Cu_3O_7 – δ, Y_2BaCuO_5, BaCuO_2, and CuO phases has been established. It is shown that the current-carrying capability of the superconducting joint is over 30% of the initial tape current.