Characterization of 2G HTS superconducting tapes: a study on properties and morphological changes

Abstract

Second-generation high-temperature superconducting (2G HTS) tapes are of paramount importance for various industrial applications, particularly in the development of advanced electronic devices, due to their exceptional ability to support high electrical currents and strong magnetic fields. However, a significant challenge arises from the degradation of critical current (Ic) when these materials are subjected to torsional stresses during production, which can compromise their performance. This study investigates the impact of cryogenic temperatures and torsional stress on the electrical, magnetic, and morphological properties of superconducting tapes designated as Tape A and Tape B. Our results show that both tapes exhibit characteristic superconducting behavior, with critical temperatures of 92 K and 93 K, respectively. Notably, despite significant morphological changes, including embrittlement and compaction of the superconducting layer, as revealed by Scanning Electron Microscopy (SEM) analysis, the superconducting properties of the tapes remained intact. These findings suggest that Tape A and Tape B are suitable for applications requiring exposure to cryogenic temperatures and mechanical stress, and provide valuable insights for the research and development of 2G HTS tapes.