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Microstructure and Superconducting Characteristics of HgmPbnBa2Ca2Cu3O8+δ
Hg-based pure and Pb doped superconducting ceramics of nominal composition HgmPbnBa2Ca2Cu3O8+δ (m = 1.0, 1.2, 1.4; n = 0, 0.1, 0.2, 0.3) were prepared by the sealed quartz ampule method. The Tc of undoped 1223 wa...