Abstract

The effect of the Ag doping on the structural and superconducting parameters was investigated in two series of melted and highly textured samples of the system (YBa 2Cu 3O 7−δ) 1− x (Ag 2O) x . The x concentration level of the first series range from 0 to 10 wt % and the second ones from 0 to 3.6 wt %. The optimal AgO 0.5 level doping found by means of the SQUID magnetization measurements ranged about 1.6–2.8 wt %. From the secondary precipitated CuO phase and from the appearance of Ag component the solubility limit of Ag in solid solution (SS) YBa 2Cu 3− y Ag y O 7− y/2−δ was found.

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