Noncontact measurement of thermal conductivity of liquid silicon in a static magnetic field

Hidekazu Kobatake, Hiroyuki Fukuyama, Izuru Minato, Takao Tsukada, Satoshi Awaji

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Thermal conductivity of liquid silicon is indispensable for numerical modeling of silicon crystal growth processes and for elucidating electron transport phenomena in high-temperature liquids. However, crucial obstacles render measurement of thermal conductivity difficult: convection and contamination from contact materials. In this study, the authors developed a noncontact measurement of thermal conductivity of liquid silicon using electromagnetic levitation in a static magnetic field. Convection in the levitated silicon becomes negligible above 2 T. The determined thermal conductivity shows that the electron contribution is dominant for thermal transport in liquid silicon at temperatures of 1750-2050 K.

Original languageEnglish
Article number094102
JournalApplied Physics Letters
Volume90
Issue number9
DOIs
Publication statusPublished - 2007 Mar 9

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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