“…As in the case of the other RE additions [19][20][21][22][23], the Ce added (Bi, Pb)-2212 superconductors were prepared by the conventional solid state synthesis with an initial stoichiometry of Bi 1.7 Pb 0.4 Sr 2.0 Ca 1.1 Cu 2.1 Ce x O y (where x = 0.0 (Ce0), 0.06 (Ce06), 0.08 (Ce08), 0.1 (Ce10), 0.12 (Ce12), 0.14 (Ce14), 0.2 (Ce20), 0.3 (Ce30) and 0.5 (Ce50)) using high purity carbonates and oxides (Aldrich, >99.9%). Stoichiometric quantities of the ingredients were weighed using an electronic balance (Mettler AE 240), thoroughly mixed and ground using an agate mortar and pestle.…”