Events

Seminar of International Laboratory of High Magnetic Fields and Low Temperatures PAS

Structural and Transport Properties of Fe/MgB₂ wires

H. Yetiż, M. Akdoğan

Abant Izzet Baysal University, Physics Department, Bolu, Turkey and Ankara University, Center of Excellence for Superconductivity Research, Ankara, Turkey

This work presents the transport critical current values obtained from in-situ Fe/MgB₂ mono and multifilamentary wires. The structural and transport properties of  wires are studied by means of SEM analysis and V(I) measurements as a function of the magnetic field at various temperatures. To design a racetrack coil, the critical current degradation should be linked to the minimum wire diameter, geometrical order of the filaments, annealing temperature and time, and external magnetic field strength. Our 19-filament Fe/MgB₂ wires (OD = 1mm) tested at cryocooler system(4.2K) in magnetic fields up to 7T showed better critical current value in comparison to those of the wires with smaller diameter.