Vortex dynamics and second magnetization peak in the iron-pnictide superconductor Ca${}_{0.82}$La${}_{0.18}$Fe${}_{0.96}$Ni${}_{0.04}$As${}_2$

I F Llovo, D Sóñora, J Mosqueira +7

We report the studies of detailed magnetic relaxation and isothermal magnetization measurements in the vortex state of the 112-type iron-pnictide Ca${}_{0.82}$La${}_{0.18}$Fe${}_{0.96}$N…