Growth of a Si0.50Ge0.50 crystal by the traveling liquidus-zone (TLZ) method in microgravity

K. Kinoshita, Y. Arai, Y. Inatomi, Takao Tsukada, S. Adachi, H. Miyata, R. Tanaka, J. Yoshikawa, T. Kihara, H. Tomioka, H. Shibayama, Y. Kubota, Y. Warashina, Y. Sasaki, Y. Ishizuka, Y. Harada, S. Wada, C. Harada, T. Ito, M. TakayanagiS. Yoda

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17 Citations (Scopus)

Abstract

An alloy semiconductor Si1-xGex (x~0.5) crystal was grown by the TLZ method in microgravity. Ge concentration was 48.5±1.5 at% for the whole region of 10 mm diameter and 17.2 mm long crystal. Compositional uniformity was established but the average concentration was a little deviated from the expected 50 at%. For further improving compositional uniformity and for obtaining Si0.5Ge0.5 crystals in microgravity, growth conditions were refined based on the measured axial compositional profile. In determining new growth conditions, difference in temperature gradient in a melt, difference in freezing interface curvature, and difference in melt back length of a seed between microgravity and terrestrial growth were taken into consideration.

Original languageEnglish
Pages (from-to)12-16
Number of pages5
JournalJournal of Crystal Growth
Volume388
DOIs
Publication statusPublished - 2014 Feb 15

Keywords

  • A1. Convection
  • A1. Diffusion
  • A2. Growth from solution
  • A2. Traveling solvent zone growth
  • B1. Germanium silicon alloys

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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    Kinoshita, K., Arai, Y., Inatomi, Y., Tsukada, T., Adachi, S., Miyata, H., Tanaka, R., Yoshikawa, J., Kihara, T., Tomioka, H., Shibayama, H., Kubota, Y., Warashina, Y., Sasaki, Y., Ishizuka, Y., Harada, Y., Wada, S., Harada, C., Ito, T., ... Yoda, S. (2014). Growth of a Si0.50Ge0.50 crystal by the traveling liquidus-zone (TLZ) method in microgravity. Journal of Crystal Growth, 388, 12-16. https://doi.org/10.1016/j.jcrysgro.2013.11.020