On the effect of gravity perturbations on composition profiles during Bridgman crystal growth in space

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

“…This result is in agreement with the cutting frequency f C E6 Â 10 À3 Hz, calculated from the formulas proposed in Ref. [11]. From these results, it appears that the effect of g-jitters on the solutally and thermally driven convection and related chemical segregations in our experiment can be, in a first approximation, simulated by a single transient acceleration, g(10 À5 g 0 , 10 À2 Hz), which has practically the same effect on the flow and solute distribution as all the g-jitter spectrum analyzed in Fig.…”

Decreasing lateral segregation in cadmium zinc telluride via ampoule tilting during vertical Bridgman growth

“…With this simplifying assumption, we are able to conduct transient simulations and model crystal composition with growth. This idea is not new; for example, such an approach was employed by Garandet et al [19] to qualitatively study the effect of a transient, transverse acceleration on segregation during a space-flight Bridgman experiment.…”

Dynamics of three-dimensional convection in microgravity crystal growth: g-jitter with steady magnetic fields

“…Many past efforts have studied the general features of flow in microgravity crystal growth systems using one-and two-dimensional analyses [2][3][4][5][6][7][8][9][10][11]. Considerable research has also been done on the effect of magnetic fields in terrestrial melt growth systems, including a number of threedimensional analyses [12][13][14][15][16][17].…”