By Topic

Potential methods for the fabrication of high-Tc superconductors for wires and cables

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Tachikawa, K. ; Tokai Univ., Kanagawa, Japan ; Togano, K.

Studies of practical properties, such as upper critical field (HC2) and critical-current density, of high-T c oxide superconductors of Y-Ba-Cu-O Bi-Sr-Ca-Cu-O, and Tl-Ba-Ca-Cu-O systems are reviewed. The Hc2 of these materials is much higher than that of conventional metallic superconductors, indicating a high potential for practical applications, even when they are used in liquid nitrogen. However, the HC2 of these materials is also highly anisotropic, as can be expected from an examination of their crystal structure. In addition to this anisotropy, the presence of weak links and a weak pinning force in this material limit the transport current density J3 to much lower levels than that required for practical applications. Recent fabrication processes that have good potential for producing wire or tape conductors or high-Tc oxide are reviewed. Some details are presented of the powder method and other fabrication processes using diffusion, solidification, and deposition techniques. For the Ag-sheathed oxide tapes, Jc values exceeding 10000 A/cm2 at 77 K and 0 T have been reported for both Bi and Tl oxide materials

Published in:

Proceedings of the IEEE  (Volume:77 ,  Issue: 8 )