Abstract
Nominally pure and B2O3-added (Bi,Pb)-2223 HTS samples were synthesized in air on alumina plates. The influence of boron-doping as well as annealing conditions on the high-Tc 2223 phase evolution was studied using X-ray diffraction (XRD), resistivity and AC susceptibility measurements. The B2O3-added samples with starting composition Bi1.7Pb0.3Ca2Sr2Cu3BxOy (x=0.05 and 0.5) reveal significant enhancement of 2223 phase formation compared to the undoped sample. Higher-level boron doping x=1.5 leads to the degradation of high-Tc 2223 phase.
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