Condensation of sp3-bonded boron nitride through a highly nonequilibrium fluid state

Shojiro Komatsu, Keiji Kurashima, Yoshiki Shimizu, Yusuke Moriyoshi, Masaharu Shiratani, Katsuyuki Okada

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Abstract

Exceptionally highly crystalline sp3-bonded boron nitride showing Kikuchi lines in transmission electron diffraction was formed by pulsed laser vaporization deposition assisted with synchronously pulsated reactive plasma. Transmission electron microscopic observations indicated that a fluid-state precursor material was generated by the high-power nanosecond laser at 193 nm. Other sp2- and sp3-hybridized nanostructures with exceptionally wide variations in density, reflecting the original large density fluctuations, suggested that the precursor material was formed in the vicinity of the thermodynamic critical point (CP). These results as well as the exceptionally fast growth rates indicated a new mode of crystal growth, namely, the direct condensation of nonequilibrium-phase crystals from the fluid state near the CP.

Original languageEnglish
Pages (from-to)205-211
Number of pages7
JournalJournal of Physical Chemistry B
Volume108
Issue number1
Publication statusPublished - Jan 8 2004

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All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Komatsu, S., Kurashima, K., Shimizu, Y., Moriyoshi, Y., Shiratani, M., & Okada, K. (2004). Condensation of sp3-bonded boron nitride through a highly nonequilibrium fluid state. Journal of Physical Chemistry B, 108(1), 205-211.