Noncontact modulated laser calorimetry of liquid silicon in a static magnetic field

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

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39 Citations (Scopus)


Accurate thermal transport properties of high-temperature liquid silicon, such as those of heat capacity, emissivity, and thermal conductivity, are required for improving numerical modeling to produce high-quality silicon crystals using the Czochralski method. However, contamination from contact material and convection complicates measurements of these properties. The authors developed a noncontact modulated laser calorimetry using electromagnetic levitation in a static magnetic field. The isobaric molar heat capacity, thermal conductivity, and hemispherical total emissivity of liquid silicon were measured simultaneously at temperatures of 1750-2050 K. Convection in the levitated liquid silicon was suppressed above a static magnetic field of 2 T.

Original languageEnglish
Article number054901
JournalJournal of Applied Physics
Issue number5
Publication statusPublished - 2008


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