Effects of a cusp magnetic field on the oscillatory convection coupled with crucible rotation in Czochralski crystal growth

Experimental results are presented of the oscillatory convection of mercury melts coupled with crucible rotation under an imposed cusp shaped magnetic field in a Czochralski crystal growing configuration. It is shown that irregular thermal waves induced by the crucible rotation can be transformed in...

Full description

Saved in:
Bibliographic Details
Published in:Journal of crystal growth 1999-02, Vol.197 (1), p.307-316
Main Authors: Lee, Y.-S., Chun, Ch.-H.
Format: Article
Language:English
Subjects:
Applied sciences
Baroclinic thermal wave
Cross-disciplinary physics: materials science
rheology
Cusp magnetic field
Czochralski crystal growth
Exact sciences and technology
Growth from melts
zone melting and refining
Magnetohydrodynamics
Materials science
Metals. Metallurgy
Methods of crystal growth
physics of crystal growth
Oscillatory convection
Physics
Rotating flow
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Experimental results are presented of the oscillatory convection of mercury melts coupled with crucible rotation under an imposed cusp shaped magnetic field in a Czochralski crystal growing configuration. It is shown that irregular thermal waves induced by the crucible rotation can be transformed into regular waves by the action of cusp magnetic field. Consequently, temperature fluctuations underneath a fixed nonrotating disk as a crystal model are significantly suppressed. The suppression effect due to the cusp magnetic field is more efficient for lower depth-to-radius aspect ratios of melts in which the more regular wave occurs.
ISSN:0022-0248
1873-5002
DOI:10.1016/S0022-0248(98)00870-7