Modeling of thermosolutal convection during Bridgman solidification of semiconductor alloys in relation with experiments

Numerical analysis of solute distribution and interface stabilization during experimental Bridgman growth of concentrated GaInSb alloys

“…As it is shown in Ref. [14] the damping of the melt convection is effective when the concentration in the melt at the interface becomes…”

Modeling of a space experiment on Bridgman solidification of concentrated semiconductor alloy

“…[5] and focused on the solutal effect on the melt convection and interface curvature for a 2D horizontal Bridgman configuration at steady gravity levels between 10 À6 and 10 À5 g 0 . The cylindrical sample is modeled by a 2D parallel plate model.…”

“…From the numerical modeling, a small increase of the convective intensity, because of the solutal effect, is found, which can be generally neglected. On the ground, experiments and numerical simulation [3,5] show a strong damping solutal effect on the convection, which leads to a significant increase of radial segregation and interface curvature during the solidification of concentrated Ga 1Àx In x Sb (x ¼ 0:1 and x ¼ 0:2) alloys. On the contrary, in space, because the configuration is rather horizontal Bridgman, the level of the convection is almost constant during the solidification, so the increase of the radial segregation and interface curvature are limited [5].…”

Bridgman growth of concentrated GaInSb alloys with improved compositional uniformity under alternating magnetic fields

“…[3,4], where the solutal effect on the melt convection and interface curvature has been analyzed for the solidification of GaInSb 10% and 20% concentrated alloys. From the numerical modeling it is found that the solute (InSb) rejected at the solid-liquid interface, damps the thermally driven convection in this region.…”