Melt flow in a Czochralski crystal puller with a transverse magnetic field
Williams, Mary Grace
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https://hdl.handle.net/2142/21917
Description
Title
Melt flow in a Czochralski crystal puller with a transverse magnetic field
Author(s)
Williams, Mary Grace
Issue Date
1989
Doctoral Committee Chair(s)
Walker, John S.
Department of Study
Mechanical Science and Engineering
Discipline
Theoretical and Applied Mechanics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Applied Mechanics
Physics, Fluid and Plasma
Engineering, Materials Science
Language
eng
Abstract
One may infer from experimental results that application of a transverse magnetic field to a Czochralski crystal puller improves the quality of the resulting crystals. The melt flow is difficult to model; it is nonlinear and three-dimensional with additional complexity generated by the magnetic field. Two methods are shown by which the problem is reduced: a small field limit and a large field limit. Results are obtained for these cases by a mixture of analytic and numerical methods.
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