Evidences of Superconductivity without Direct Relation to Valence Electron Density in Metal Doped Y123 Cuprates

Xiao-Xia Wang, Guo-Ru Yu, Jiang-Hui Li +1

We investigated systemically YBa2Cu3-x(Fe, Co, Al, Zn)xO7-δ (x=0.0\sim0.5) cuprates through the XRD, the test of superconductivity, oxygen contents,positron annihilation technology…