Abstract
Magnetism and superconductivity are mutually exclusive phenomena and their interactions are interesting to study. In this work we studied the effects of antiferromagnetic FeS additions on the superconducting properties of Bi1.6Pb0.4Sr2CaCu2O8 (Bi-2212). Samples with starting composition Bi1.6Pb0.4Sr2CaCu2O8(FeS)x for x = 0–5.0 wt% were prepared using the solid state reaction method. The powder X-ray diffraction (XRD) patterns showed that the Bi-2212 phase was dominant in samples with x ≤ 0.2 wt% (≥92% volume fraction). Field emission scanning electron micrographs showed plate-like structure which increased in flakiness with FeS addition. The non-added samples showed the highest zero resistance temperature, Tc-zero and onset temperature, Tc-onset at 72 K and 83 K, respectively. The peak temperature, Tp of the imaginary part of the AC susceptibility increased for x ≤ 0.2 wt% samples indicating an increase in the flux pinning force. The x = 5.0 wt% samples showed the Bi-2212 (63%) and Bi-2201 (37%) phase and semiconducting-like behavior without any superconducting transition. This work showed that nano-sized FeS can be used to increase the flakiness and flux pinning force of Bi1.6Pb0.4Sr2CaCu2O8 for x ≤ 0.2 wt%.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
