Abstract
Single domain YBa 2Cu 3O y (Y123) thick films (∼100 μm) were fabricated on untextured Ag12 wt.%Pd alloy substrates from Y 2O 3 cloths by an infiltration and growth process. The process involves the infiltration of Y 2O 3 cloths placed on metallic substrates by barium cuprates and copper oxide liquids at 970 °C. The infiltrated Y 2O 3 cloth is subsequently transformed into single domain Y123 during a slow cooling schedule in the presence of a c-axis oriented Nd123 seed crystal placed at the top center of the fabric. The solidification window for single domain growth is lowered to 970–950 °C using liquid phases containing up 10 wt.% Ag and small amounts of BaF 2.
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