LAUSR

Abstract The addition of nanosized entities into the superconducting matrix is a practical way for increasing the performance of host YBa2Cu3O7-d (noted Y-123) compound. In this study, series of Y-123 samples with WO3 nanowires (noted NW-WO3) as additives were produced via the solid-state reaction method. The structural, morphological, chemical compositions, electrical and magnetic properties were thoroughly investigated using X-ray diffraction (XRD), scanning electron microscope (SEM) along with EDX system and physical properties measurement system (PPMS), respectively. The critical current density (Jc) and flux pinning force density (Fp) were extracted from the measurements of magnetization. The XRD, SEM and EDX analyses showed the successful formation of the Y-123 orthorhombic phase. The electrical resistivity measurements proved the occurrence of superconductivity in these samples. The magnetic results showed higher critical current densities and flux pinning ability in NW-WO3 added Y-123 products. The dominant pinning mechanisms and the strength of pinning centers in various sintered products were examined and discussed.