Strontium substitution for barium in mercury superconductors

HgBa sub(2-x)Sr sub(x)CuO sub(4+ delta ) (x identical with 0.06 - 0.45) and Hg sub(1-y)V sub(y)Ba sub(2-x)Sr sub(x)CuO sub(4+ delta ) (x identical with 0.16 - 1.1, y identical with 0.2 - 0.35) series were prepared by the encapsulation method. In the former series the optimum doping level is achieved...

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