Abstract
The polycrystalline FeSe bulks were sintered by solid-state reaction using a two-step sintering process to investigate the effect of graphene addition on the superconductivity and microstructure of the FeSe bulks. With the increase of graphene doping, the thickness of tetragonal β-FeSe sheet decreased obviously due to the existence of graphene between the layers. The grain connectivity of FeSe superconductor is significantly improved, and the critical transition temperature (Tc) is apparently enhanced up to 10.57 K in Fe1.01SeG0.05, which increased by 15.3% compared to the Fe1.01Se bulk without doping graphene. The critical current density (Jc) of Fe1.01SeG0.05 reaches 5 × 103 A/cm2 under zero magnetic field. Moreover, the critical current density (Jc) of Fe1.01SeG0.05 is simultaneously increased under high magnetic field due to the refined grains by graphene doping.
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 callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: 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.
