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Samples of Bi1.84Pb0.34Sb0.1Sr2Ca2Cu3Oy ceramic were prepared by a direct sintering and air quenching method. A new phase with Tc(zero) of 95 K is detected inside multiphased samples by resistivity and susceptibility measurements. Powder x-ray diffraction analysis indicates that the structure is orthorhombic with cell parameters a=5.41 Å, b=5.44 Å, c=43.35 Å. The (Bi, Pb)2Sr2Ca3Cu4Oy composition is determined by x-ray energy dispersion analysis.
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Wang et al. (1990) studied this question.
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