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.
Subject
General Physics and Astronomy