Abstract
The coupling between heat and mass transfer in the Bridgman-Stockbarger growth of non-dilute crystals induces growth rate transients that are longer than those caused by heat transfer alone. The dynamics of the diffusion-controlled growth for thermophysical properties representative of Pb1-xSnxTe and Hg1-xCdxTe are computed from a one-dimensional solidification model which includes melt-crystal phase behavior. Results show that the growth rate response to a step change in pull rate for both systems differs from the exponential decay observed for dilute alloys and that growth rates cannot be inferred from axial segregation data in non-dilute systems due to the dependence of the segregation coefficient on composition.
Original language | English (US) |
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Pages (from-to) | 587-596 |
Number of pages | 10 |
Journal | Journal of Crystal Growth |
Volume | 71 |
Issue number | 3 |
DOIs | |
State | Published - 1985 |
Bibliographical note
Funding Information:This research was supported by a grant from the Microgravity Sciences Program of the US National Aeronautic and Space Administration (Ref. No. NSG-7645).