Phase relation between supercooled liquid and amorphous silicon

Junpei T. Okada; Patrick H.-L. Sit; Ryo Ishikawa; Takehiko Ishikawa; Jinfan Chen; Koji S. Nakayama; Kensaku Maeda; Yoshihiko Yokoyama; Yuki Watanabe; Paul-Francois Paradis; Yasuhiro Watanabe; Susumu Nanao; Yuichi Ikuhara; Kaoru Kimura; Satoshi Uda

doi:10.1063/1.5129059

Phase relation between supercooled liquid and amorphous silicon

Junpei T. Okada^*
, Patrick H.-L. Sit
, Ryo Ishikawa
, Takehiko Ishikawa
, Jinfan Chen
, Koji S. Nakayama
, Kensaku Maeda
, Yoshihiko Yokoyama
, Yuki Watanabe
, Paul-Francois Paradis
, Yasuhiro Watanabe
, Susumu Nanao
, Yuichi Ikuhara
, Kaoru Kimura
, Satoshi Uda

^*Corresponding author for this work

School of Energy and Environment

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

2 Citations (Scopus)

93 Downloads (CityUHK Scholars)

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 (T_cl: 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)].

Original language	English
Article number	093705
Journal	Applied Physics Letters
Volume	116
Issue number	9
DOIs	https://doi.org/10.1063/1.5129059
Publication status	Published - 2 Mar 2020

Research Keywords

UNDERCOOLED SI
CRYSTALLIZATION
SOLIDIFICATION
AMORPHIZATION
TEMPERATURE
TRANSITION
HEAT

Publisher's Copyright Statement

COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Junpei T. Okada, Patrick H.-L. Sit, Ryo Ishikawa, Takehiko Ishikawa, Jinfan Chen, Koji S. Nakayama, Kensaku Maeda, Yoshihiko Yokoyama, Yuki Watanabe, Paul-François Paradis, Yasuhiro Watanabe, Susumu Nanao, Yuichi Ikuhara, Kaoru Kimura, and Satoshi Uda , "Phase relation between supercooled liquid and amorphous silicon", Appl. Phys. Lett. 116, 093705 (2020) and may be found at https://doi.org/10.1063/1.5129059.

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title = "Phase relation between supercooled liquid and amorphous silicon",

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)].",

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volume = "116",

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T1 - Phase relation between supercooled liquid and amorphous silicon

AU - Okada, Junpei T.

AU - Sit, Patrick H.-L.

AU - Ishikawa, Ryo

AU - Ishikawa, Takehiko

AU - Chen, Jinfan

AU - Nakayama, Koji S.

AU - Maeda, Kensaku

AU - Yokoyama, Yoshihiko

AU - Watanabe, Yuki

AU - Paradis, Paul-Francois

AU - Watanabe, Yasuhiro

AU - Nanao, Susumu

AU - Ikuhara, Yuichi

AU - Kimura, Kaoru

AU - Uda, Satoshi

PY - 2020/3/2

Y1 - 2020/3/2

N2 - 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)].

AB - 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)].

KW - UNDERCOOLED SI

KW - CRYSTALLIZATION

KW - SOLIDIFICATION

KW - AMORPHIZATION

KW - TEMPERATURE

KW - TRANSITION

KW - HEAT

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

M1 - 093705

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Phase relation between supercooled liquid and amorphous silicon

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Research Keywords

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ECS: Ab Initio Study of Molybdenum Disulfide-based Materials for Catalytic Hydrogen Production

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Phase relation between supercooled liquid and amorphous silicon

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ECS: Ab Initio Study of Molybdenum Disulfide-based Materials for Catalytic Hydrogen Production

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