Development of Next Generation RE-123 Coated Conductors

Abstract

A lot of effort has been made to develop superconductive wires/tapes which are beneficial for many industrial applications. Especially, the next generation coated conductors using RE123 (RE=Rare earth element, Y, Nd, Sm etc) materials have high expectations, because of its high critical current density at the liquid nitrogen temperature and under high magnetic fields. Recently, several processes have been tried for obtaining the bi-axially textured buffer layers/metal substrates and depositing superconductors on these substrates, consequently a 10 m long YBCO tape with high J_c was successfully fabricated by several processings. This paper reviews the prospects of the research and development for the coated conductor with comparing the recent progress in Japan and the United States.