Domain wall induced modulation of low field H-T phase diagram in patterned superconductor-ferromagnet stripes

  title={Domain wall induced modulation of low field H-T phase diagram in patterned superconductor-ferromagnet stripes},
  author={Ekta Bhatia and Zoe H. Barber and Ilari J. Maasilta and Kartik Senapati},
  journal={AIP Advances},
We present a systematic study of the magnetic domain wall induced modulation of superconducting transition temperature (Tc) in Nb/Ni bilayer stripes. By varying the thickness of the Ni layer from 20 nm to 100 nm we have been able to measure the low field Tc-H phase diagram spanning the Neel domain wall and Bloch domain wall range of thicknesses. Micromagnetic simulations and magnetic force microscopy measurements confirmed a stronger out-of-plane stray field in the Bloch domain walls compared… 
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