Numerical 3D study of FZ growth: dependence on growth parameters and melt instability

Three-dimensional modelling of the floating zone (needle-eye) crystal growth process is carried out to analyse numerically the stability of the melt flow and the influence of the crystal rotation rate and inductor slit width on the 3D flow field and on the grown crystal resistivity. The unsteadiness...

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Bibliographic Details
Published in:Journal of crystal growth 2001-08, Vol.230 (1), p.48-56
Main Authors: Ratnieks, G., Muižnieks, A., Mühlbauer, A., Raming, G.
Format: Article
Language:English
Subjects:
A1. Computer simulation
A1. Fluid flows
A1. Mass transfer
A2. Floating zone technique
B2. Semiconducting silicon
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from melts
zone melting and refining
Materials science
Methods of crystal growth
physics of crystal growth
Physics
Theory and models of crystal growth
physics of crystal growth, crystal morphology and orientation
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Summary:Three-dimensional modelling of the floating zone (needle-eye) crystal growth process is carried out to analyse numerically the stability of the melt flow and the influence of the crystal rotation rate and inductor slit width on the 3D flow field and on the grown crystal resistivity. The unsteadiness of the melt is simulated and it is found that for the considered growth parameters a steady-state flow can be a reasonable approximation to the unsteady melt motion. The parametric studies have shown that increasing the rotation rate essentially changes the flow pattern and weakens the rotational striations, while the inductor slit width has a more local influence on these characteristics.
ISSN:0022-0248
1873-5002
DOI:10.1016/S0022-0248(01)01318-5