Growth of GaInSb concentrated alloys under alternating magnetic field

GaInSb samples with a nominal concentration of 12 and 20% mol InSb have been grown by the vertical Bridgman technique under alternating magnetic field. The solid–liquid interface shape and position have been studied for several values of the magnetic field (0–6 mT). The solutal distribution in the grown samples has been checked using particle-induced X-ray emission technique (PIXE). Others investigated parameters have been the initial position of the solid/liquid interface in the coil and the crucible materials.An improvement of the quality and a delay in the morphological destabilisation is observed for the samples grown under 3 mT compared to those without electromagnetic stirring. Some discrepancies, compared with numerical simulations, are concerning the exact shape of the solid–liquid interface during the growth that appears to be more sensitive than expected to the initial position of the sample in the coil.