Influence of metal cation concentration on structure and performance of SmBa2Cu3O7−z superconducting films by non-fluorine CSD method

Abstract SmBa 2 Cu 3 O 7− z (SmBCO) films with different metal cation concentrations (MCCs) were prepared on (00l) LaAlO 3 substrate by self-developed non-fluorine chemical solution deposition (CSD) method. The influence of MCC on structure and performance of SmBCO films was investigated. The film with MCC of 1.0 mol/L shows better c -axis texture and smoother as well as denser surface microstructure than other films. With increasing the MCC, the superconducting transition temperature ( T c ) of the films has a peak value of 91.2 K at MCC of 1.0 mol/L. And the films with MCC of 0.8 mol/L and 1.0 mol/L show higher current carrying capabilities in the magnetic fields according to the J c − H behaviors.