Vibroconvective mixing applied to vertical Bridgman growth

Flow and segregation control by accelerated rotation for vertical Bridgman growth of cadmium zinc telluride: ACRT versus vibration

“…There are also other control techniques based on ampoule vibration [12,13]. For example, the coupled vibrational stirring (CVS) method [12] uses asymmetric rotational motion, which generates flushing flow at the top melt surface and thus enhances solute mixing.…”

“…For example, the coupled vibrational stirring (CVS) method [12] uses asymmetric rotational motion, which generates flushing flow at the top melt surface and thus enhances solute mixing. Unfortunately, the vigorous global mixing generated by CVS is not favored for axial segregation control.…”

“…To reduce axial segregation, global solute mixing needs to be minimized [6]. Moreover, an unstable growth rate was also observed in the CVS-controlled oxide growth [12].…”

Effect of axial vibration on Bi12SiO20 crystal growth by vertical Bridgman technique

“…Because of high energy, ultrasonic vibration causes cavitation and turbulent flow, which degrades crystalline quality. The coupled vibrational stirring [9][10][11][12] is a powerful tool for mixing fluids and is helpful to improve chemical homogeneity. Unfortunately, large lattice distortion [10] and unstable growth rate [12] were observed in the coupled vibrational stirring system.…”

“…The coupled vibrational stirring [9][10][11][12] is a powerful tool for mixing fluids and is helpful to improve chemical homogeneity. Unfortunately, large lattice distortion [10] and unstable growth rate [12] were observed in the coupled vibrational stirring system. Recently, axial vibration has also been found useful in floating-zone [13][14][15][16] and Bridgman technique [17][18][19][20].…”