Superconducting properties of (Y1−xEux)Ba2Cu3Oy-coated conductors prepared via trifluoroacetate–metalorganic deposition

Author:

Sato M,Nakaoka K,Ibi A,Machi T,Izumi T

Abstract

Abstract In order to investigate the effect of the partial substitution of Y by Eu on the superconducting properties of REBa2Cu3O y (RE: rare earth) films, we fabricated trifluoroacetete-metalorganic deposited Y1-x Eu x Ba2Cu3O y , (x = 0.1, 0.23 0.3, 0.4, 0.5) films on metallic substrates with optimal crystallization conditions. The optimized crystallization conditions for fabricating Y1-x Eu x Ba2Cu3O y coated conductors with high x composition are relatively high crystallization temperature and low oxygen pressure comparing with YBa2Cu3O y . The films with high χ exhibit a high critical temperature, irreversible fields, and high critical current density in the high-magnetic region at 77 K. However, the superiority on the critical current density of the films with high χ in self and low fields at 77 K is not necessary conformed. This behavior might be explained by the influence of the melt-growth mode in the film with high x.

Publisher

IOP Publishing

Subject

General Physics and Astronomy

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