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A modified synthesis route to prepare Cu0.5Tl0.5Ba2Ca3Cu4O12-y superconductor is proposed. In this modified approach a pure Cu0.5Tl0.5Ba2Ca3Cu4O12-y superconducting phase is achieved at normal pressure. The charge reservoir layer of Cu0.5Tl0.5-1234 superconductor is also modified by substituting Sr at Ba site in 0, 0.15, 0.25 and 0.35 percentages. The substitution of smaller sized Sr is resulted in...
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