ENHANCED GROWTH OF THE (PB,BI)(2)SR2CA2CU3O10+Z PHASE GRAINS

Enhanced growth of the (Pb,Bi)(2)Sr2Ca2Cu3O10+z phase grains has been obtained by adding flux components as Sb2O3 and NaCl respectively. Til e effects of such additives have been compared using XRD, SEM, EMA and transport measurements. In the case of Sb2O3, 2223 phase grains up to 50 mu m dimension were grown, but with increasing amount of Sb2O3 par tial decomposition of 2223 phase and deterioration of tile transport p roperties were found. With NaCl, 100 mu m grains were formed and sharp transition at 110 K was preserved, nevertheless for high amounts of N aCl (up to 40% weight) the intergrowth of 2212 into 2223 phase appeare d.