The effect of a magnetic field on the flux of a contaminant dissolving into the crucible wall boundary layer in Czochralski crystal growth
The effect of a magnetic field on the flux of a contaminant dissolving into the crucible wall boundary layer in Czochralski crystal growth
In this paper we consider the effect of various configurations of magnetic field on an idealised model of the crucible sidewall boundary layer in a Czochralski crystal growth melt. We determine the effect of these different configurations on the fluid flow in a boundary layer adjacent to the wall. From this analysis we are able to determine the flux of a contaminant, such as oxygen, produced by a chemical reaction at the wall into the bulk of the melt. We show that a magnetic field may increase or decrease the contaminant flux across the momentum boundary layer. Although, in general the magnetic field acts to inhibit the flow in the boundary layer, and thus reduce the contaminant transport into the bulk of the melt, the nature of the dependence of the rate of contaminant production on temperature at the wall can act to increase the overall contaminant transport into the melt.
915-932
Kerr, Oliver S.
a08d7aac-d789-4ee2-88ce-99976c67b200
Wheeler, A.A.
eb831100-6e51-4674-878a-a2936ad04d73
1989
Kerr, Oliver S.
a08d7aac-d789-4ee2-88ce-99976c67b200
Wheeler, A.A.
eb831100-6e51-4674-878a-a2936ad04d73
Kerr, Oliver S. and Wheeler, A.A.
(1989)
The effect of a magnetic field on the flux of a contaminant dissolving into the crucible wall boundary layer in Czochralski crystal growth.
Journal of Crystal Growth, 96 (4), .
(doi:10.1016/0022-0248(89)90652-0).
Abstract
In this paper we consider the effect of various configurations of magnetic field on an idealised model of the crucible sidewall boundary layer in a Czochralski crystal growth melt. We determine the effect of these different configurations on the fluid flow in a boundary layer adjacent to the wall. From this analysis we are able to determine the flux of a contaminant, such as oxygen, produced by a chemical reaction at the wall into the bulk of the melt. We show that a magnetic field may increase or decrease the contaminant flux across the momentum boundary layer. Although, in general the magnetic field acts to inhibit the flow in the boundary layer, and thus reduce the contaminant transport into the bulk of the melt, the nature of the dependence of the rate of contaminant production on temperature at the wall can act to increase the overall contaminant transport into the melt.
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Published date: 1989
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Local EPrints ID: 826
URI: http://eprints.soton.ac.uk/id/eprint/826
ISSN: 0022-0248
PURE UUID: 8ec47181-45e5-4c74-9665-419dccec63f6
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Date deposited: 05 Apr 2004
Last modified: 15 Mar 2024 04:42
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Author:
Oliver S. Kerr
Author:
A.A. Wheeler
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