Growth of Bi2Sr2CaCu2Oy single crystals by a vertical Bridgman method and their characterization

Abstract We prepared Bi 2 Sr 2 CaCu 2 O y single crystals by a vertical Bridgman method and investigated their characterization. From the results, we found that the plate-like Bi 2 Sr 2 CaCu 2 O y single crystal with the size of 4 × 10mm 2 was a single phase. The as-grown Bi 2 Sr 2 CaCu 2 O y single crystals had a superconductivity without any annealing after crystal growth. In addition, the single Bi 2 Sr 2 CaCu 2 O y crystal did not contain any impurities and its surface morphology was flat.