Influence of ultrasonic vibrations on the growth of InSb crystals

Influence of acoustic streaming on the stability of melt flows in horizontal Bridgman configurations

“…To enhance the crystal quality in the horizontal Bridgman configurations, we propose to apply progressive acoustic waves of high frequency in the bulk of the melt. The experimental results of Kozhemyakin [1] showed that the use of ultrasonic vibrations can attenuate and even sometimes eliminate the striations. Moreover, it is well known that by applying ultrasonic waves in the bulk of a fluid, a steady flow called Eckart streaming is generated [2][3][4][5][6].…”

Evolution of growth and enhancement in power factor of InSb bulk crystal

“…However, the use of InSb in such devices requires a large diameter crystal having homogeneous impurity distribution and low dislocation density to ensure optimum performance with high yield and good reliability. The technique which is generally employed for the bulk growth of III-V materials, is the Czochralski technique [4][5][6][7]. But convection instationarities often lead to striations along the growth direction and transverse to it.…”

Theoretical and technological solutions of the striation problem

“…Kirgintsev and Avvakumov [58] compared several stirring techniques including vibrators and found the latter not very effective. Recently several authors [59][60][61] revived the interest in vibration stirring although it has not found application in commercial crystal production.…”