Jpn. J. Appl. Phys. 23 (1984) pp. L527-L530 |Next Article| |Table of Contents|
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Letter
Study of Thermal Symmetry in Czochralski Silicon Melt under a Vertical Magnetic Field
Hiroshi Hirata and
Naohisa Inoue
Atsugi Electrical Communication Laboratory, Nippon Telegraph & Telephone Public Corporation
(Received March 12, 1984; accepted for publication July 21, 1984)
A study is made of the effects of a vertical magnetic field on thermal symmetry in a Czochralski silicon melt. By application of a magnetic field of 2500 Oe, thermal asymmetry is reduced to about 1/2 that at 0 Oe, and isothermal contours become concentric circles. A model is proposed where a vertical magnetic field suppresses asymmetric thermal convection which degrades thermal symmetry, and heat transfer in the stagnant melt is dominated by symmetric heat conduction.
URL:
http://jjap.jsap.jp/link?JJAP/23/L527/
DOI: 10.1143/JJAP.23.L527
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