Beschreibung:
<jats:title>Abstract</jats:title>
<jats:p>In order to investigate the effect of the partial substitution of Y by Eu on the superconducting properties of REBa<jats:sub>2</jats:sub>Cu<jats:sub>3</jats:sub>O<jats:sub>
<jats:italic>y</jats:italic>
</jats:sub> (RE: rare earth) films, we fabricated trifluoroacetete-metalorganic deposited Y<jats:sub>1-<jats:italic>x</jats:italic>
</jats:sub>Eu<jats:sub>
<jats:italic>x</jats:italic>
</jats:sub>Ba<jats:sub>2</jats:sub>Cu<jats:sub>3</jats:sub>O<jats:sub>
<jats:italic>y</jats:italic>
</jats:sub>, (<jats:italic>x</jats:italic> = 0.1, 0.23 0.3, 0.4, 0.5) films on metallic substrates with optimal crystallization conditions. The optimized crystallization conditions for fabricating Y<jats:sub>1-<jats:italic>x</jats:italic>
</jats:sub>Eu<jats:sub>
<jats:italic>x</jats:italic>
</jats:sub>Ba<jats:sub>2</jats:sub>Cu<jats:sub>3</jats:sub>O<jats:sub>
<jats:italic>y</jats:italic>
</jats:sub> coated conductors with high <jats:italic>x</jats:italic> composition are relatively high crystallization temperature and low oxygen pressure comparing with YBa<jats:sub>2</jats:sub>Cu<jats:sub>3</jats:sub>O<jats:sub>
<jats:italic>y</jats:italic>
</jats:sub>. 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 <jats:italic>x</jats:italic>.</jats:p>