Phase relation between supercooled liquid and amorphous silicon

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Junpei T. Okada
  • Ryo Ishikawa
  • Takehiko Ishikawa
  • Koji S. Nakayama
  • Kensaku Maeda
  • Yoshihiko Yokoyama
  • Yuki Watanabe
  • Paul-Francois Paradis
  • Yasuhiro Watanabe
  • Susumu Nanao
  • Yuichi Ikuhara
  • Kaoru Kimura
  • Satoshi Uda

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number093705
Journal / PublicationApplied Physics Letters
Volume116
Issue number9
Publication statusPublished - 2 Mar 2020

Abstract

The phase relation between supercooled liquid silicon (l-Si) and amorphous silicon (a-Si) is discussed based on experimental results. Electrostatically levitated l-Si samples were supercooled down to low temperatures, 300 K below the melting temperature (Tcl: 1683 K), and solidified accompanied by the release of latent heat. It was found that solidified Si samples melted again at 1480 K caused by the latent heat. Also, it was found that the Si samples that rapidly quenched near the solidification temperature contained a large amount of a-Si with tetrahedral coordination. These two findings show that the supercooled l-Si samples solidified into a-Si and a-Si melted, confirming the idea of a first-order phase transition between two metastable phases proposed by Turnbull et al. [Metall. Mater. Trans. A 29, 1825 (1998)].

Research Area(s)

  • UNDERCOOLED SI, CRYSTALLIZATION, SOLIDIFICATION, AMORPHIZATION, TEMPERATURE, TRANSITION, HEAT

Citation Format(s)

Phase relation between supercooled liquid and amorphous silicon. / Okada, Junpei T.; Sit, Patrick H.-L.; Ishikawa, Ryo; Ishikawa, Takehiko; Chen, Jinfan; Nakayama, Koji S.; Maeda, Kensaku; Yokoyama, Yoshihiko; Watanabe, Yuki; Paradis, Paul-Francois; Watanabe, Yasuhiro; Nanao, Susumu; Ikuhara, Yuichi; Kimura, Kaoru; Uda, Satoshi.

In: Applied Physics Letters, Vol. 116, No. 9, 093705, 02.03.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal