The study on Zn and Ni substituted GdBaSrCu3O7−δ superconductor

Distinct effects of Al3+ substitution at Cu-site and Al2O3 addition on step-like elastic anomalies and electron–phonon coupling constant in EuBa2Cu3O7−δ superconductors

“…Density (g/cm 3 ) [37] and GdBaSr(Cu, Zn) 3 O 7−ı [38,39], caused lowering of indicating weakening of electron-phonon coupling. Fig.…”