Production of BaMeO3 doped YBCO superconducting thin films by TFA-MOD technique

High temperature superconducting materials (HTS) possess very high critical density (Jc) values at low temperature and magnetic fields. In these kinds of studies, crystalline defects, such as fine precipitates of non-superconducting phases, dislocations, vacancies, grain boundaries, twin boundaries, antiphase boundaries and insulating regions in grain boundaries are considered to act as pinning centers. However, the Jc values rapidly decrease with increasing temperature in magnetic field. The main reasons of the Jc depression are recognized to be the intrinsic crystalline anisotropy of HTS and the thermal fluctuations. Nevertheless, the lack of effective pinning centers should be noted as one of the main reasons. Depending on these reasons, a novel technology has been developed by means of a nanostructure engineering to create artificial pinning centers in HTS materials. In this respect, increasing critical current density and improvement of flux pinning properties of YBa2Cu3O6.57 (YBCO) superconducting films with BaMeO3 (Me: Zr, Hf, Ir, Sn, Mn, Mo, Nb etc.) perovskite nanodots, nanorods or nanoparticles, as pinning centers, on SrTiO3 substrate are aimed using TFA-MOD method in this study.