Superconductivity in Ba sub 2 YCu sub 3 O sub 7 single crystals.
01 January 1987
We report the growth of single crystals of the new high T sub c cuprate superconductors from partially melting rare earth oxide-barium oxide-copper oxide mixtures. Melt composition influences the size, morphology, and defect chemistry of the product crystals. This study has focussed on conditions for the growth of Ba sub 2 YCu sub 3 O sub 7, however, crystals containing other rare earths in place of yttrium are readily obtained as well. Crystals are superconducting as confirmed by electrical and magnetic measurements.