Variation of sintering temperature have been done in the synthesis superconductors using wet-mixing method by adding to obtain homogenous superconductors. Generally, XRD characterization and search match indicates the presence impurities of BaCO3, BaCuO2, dan CuO compounds. Variation of sintering temperature of 750oC, 850oC, dan 950oC showed an increase in the volume fraction of superconductors of 57.15%, 88.78%, and 95.04%, lattice parameter a showed a decreased of 3.891178 ?, 3.886266 ?, and 3.879036 ?, b of 3.912534 ?, 3.910184 ?and 3.897226 ?. Meanwhile, lattice parameter c showed an increased of 11.600093 ?, 11.769890 ?, and 11.826884 ?, crystal size of 73 nm, 149 nm, and 160 nm.
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