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Study on self-diffusion transport phenomena during mercurous bromide (Hg₂Br₂) vapor processes

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2024, 34(2), pp.48~54
  • DOI : 10.6111/JKCGCT.2024.34.2.048
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : February 15, 2024
  • Accepted : March 11, 2024
  • Published : April 30, 2024

Kim, Namil 1,  Geug Tae Kim 1

1한남대학교

Accredited

ABSTRACT

During the Hg₂Br₂ physical vapor transport process with self-diffusion, it is concluded that for 10-3≤g0≤g≤1g0 the thermal buoyancy driven convection is dominant in the vapor phase; at the gravitational level of g=10-4g0, the transition region from the convection to diffusion occurs; for 10-6g0≤g≤10-5g0, the diffusion mode is predominant. The total molar flux of Hg₂Br₂ decays exponentially with the decreasing of one tenth of gravitational magnitude. For 10°C≤ΔT≤50°C, the total molar flux increases linearly and directly with the temperature difference between the source and crystal regions.

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