2012/04/30 by Shilpam Sharma, K Vinod, K. Vinod +4
Materials Science · Physics and Astronomy · #Critical current #Iron-based superconductors research #Magnetic field #Magnetization #Perpendicular #Phase diagram #Physics of Superconductivity and Magnetism #Power law #Scaling #Superconductivity #Superconductivity in MgB2 and Alloys #Vortex #cond-mat.supr-con
paper · pdf · doi:10.1088/0953-2048/26/1/015009
published as Supercond. Sci. Technol. 26 (2013) 015009
arxiv created 2012/05/03 · openalex publication_date 2012/11/22 · arxiv updated 2012/12/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The critical current density has been measured on single crystals of Ru-substituted BaFe 2 As 2 superconductor at several temperatures and in fields up to 16 T. The magnetization versus field isotherms reveal the occurrence of a clear second magnetization peak (SMP), also known as the fish-tail effect, for both H parallel and perpendicular to the c -axis of the crystal. The in-field resistance and magnetization data are used to draw a vortex phase diagram. The nature of the vortices has been determined from the scaling behaviour of the pinning force density extracted from the J C – H isotherms.