2019/07/08 by Lee, H. B., C, G., Kim +1
#Applied Physics (physics.app-ph) #FOS: Physical sciences
paper · doi:10.48550/arxiv.1907.03905
A temperature dependence of a width of ΔH = ΔB region has been studied for 5 wt.% (Fe, Ti) particle-doped MgB2 superconductor. The result revealed that widths of the region are linear along temperature. Here we show the meaning of the result and details of the calculation. In previous report, we represented a theory that a width of ΔH = ΔB region is related with upper critical field of the superconductor, which is that pinned fluxes at volume defect are picked out and move in ΔH = ΔB region when a distance between them is the same as that of upper critical field. Thus, we inspected the relationship between a width of the region and upper critical field along temperature. The theory would gain another justification if temperature dependence of a width of the region is proportional to that of upper critical field. We discussed several topics for ΔH = ΔB region of 5 wt.% (Fe, Ti) particle-doped MgB2 superconductor, which are Fe of (Fe, Ti) particle, Bean model, volume dependence of the region, etc..