Structure of temperature and velocity fields in the Si melt of a Czochralksi crystal growth system

Kyung Woo Yi, Vicki B. Booker, Minoru Eguchi, Toshiyuki Shyo, Koichi Kakimoto

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Non-axisymmetric temperature and velocity profiles attributed to crucible rotation in the Si melt of a Czochralski (Cz) system were studied numerically by using three-dimensional (3D) numerical simulation and experimentally by measuring temperature. Two types of non-axisymmetric temperature and velocity profiles were found to exist in the melt. The type observed at low rotation rates occurs under conditions in which Rayleigh-Bénard instability occurs, and the other type of non-axisymmetric flow observed at high rotation rates occurs under conditions corresponding to the occurrence of the baroclinic instability in the rotating annulus. The 3D structure of the temperature field was studied experimentally to confirm the possibility of baroclinic instability in the melt. The predominant trend was a tilt of the temperature field in the same direction as crucible rotation. It was found that the temperature field tilted along the azimuthal direction under conditions in which baroclinic instability occurs.

Original languageEnglish
Pages (from-to)383-392
Number of pages10
JournalJournal of Crystal Growth
Volume156
Issue number4
DOIs
Publication statusPublished - Dec 1 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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