Details

Autor(en) / Beteiligte

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

Titel

Phase relation between supercooled liquid and amorphous silicon

Ist Teil von

• Applied physics letters, 2020-03, Vol.116 (9)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2020

Quelle

American Institute of Physics (AIP) Journals

Beschreibungen/Notizen

• 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)].