Direct observation of vortices by scanning SQUID microscope on small superconducting Mo80Ge20 circular disks

► Vortex distribution in small Mo80Ge20 circular disk was investigated by SQUID microscope. ► Different vortex configuration evolves with the increase in applied magnetic field. ► Inverse-Biot-Savart law was used for restoring images of vortices taken by SQUID microscopy.