Magnetic Behavior and Effect of Transport Current on It in Superconducting Nb-Zr Wire

Flux vortices and transport currents in type II superconductors

“…M. Campbell and J. E. Evetts 1276Stephen (1966) and Yntema (1967 have also obtained expressions for the nonisothermal driving force on a system of straight vortices. Stephen takes as his equilibrium condition constancy of generalized pressure, which is equivalent to …r· † Tˆ0 .…”

“…Since measurements of magnetization are one of the commonest ways of measuring pinning forces the magnetization has been worked out for a number of cases. Analytic expressions have been obtained for a cylinder with J cˆK =B (Campbell et al 1964), and a slab with J cˆK =…B ‡ C † (Fietz et al 1964) and J cˆK =B 1=2 (Yasukochi et al 1964).…”

Flux vortices and transport currents in type II superconductors

“…Since measurements of magnetization are one of T2 Downloaded by [Stanford University Libraries] at 08:59 06 October 2012 the commonest ways of measuring pinning forces the magnetization has been worked out for a number of cases. Analytic expressions have been obtained for a cylinder with Jc = K/B (Campbell et al 1964), and a slab with Jc=K/(B+C) (Fietz et al 1964) and Jc=K/B~/2 (Yasukochi et al 1964). …”

Fluxoid dynamics methods for electromagnetic phenomena of superconductors

“…Figure 5 shows the relation between the applied magnetic flux density, B, and the critical current density, J c , when the external magnetic flux density B ex increases monotonously. The dots are the numerical results and the curved lines are the fitted ones for the numerical results according to the Kim model (Kim et al, 1965) and the Yasukochi model (Yasukochi et al, 1964), and the original function. It can be found that the numerical results and the Kim and Yasukochi models agree very well to each other.…”