抄録
The glacial phase, with an apparently glassy structure, can be formed by a first-order transition in some molecular-glass-forming supercooled liquids. Here we report the formation of metallic glacial glass (MGG) from the precursor of a rare-earth-element-based metallic glass via the first-order phase transition in its supercooled liquid. The excellent glass-forming ability of the precursor ensures the MGG to be successfully fabricated into bulk samples (with a minimal critical diameter exceeding 3 mm). Distinct enthalpy, structure, and property changes are detected between MGG and metallic glass, and the reversed "melting-like"transition from the glacial phase to the supercooled liquid is observed in fast differential scanning calorimetry. The kinetics of MGG formation is reflected by a continuous heating transformation diagram, with the phase transition pathways measured at different heating rates taken into account. The finding supports the scenario of liquid-liquid transition in metallic-glass-forming liquids.
本文言語 | English |
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ページ(範囲) | 6718-6723 |
ページ数 | 6 |
ジャーナル | Journal of Physical Chemistry Letters |
巻 | 11 |
号 | 16 |
DOI | |
出版ステータス | Published - 2020 8月 20 |
外部発表 | はい |
ASJC Scopus subject areas
- 材料科学(全般)
- 物理化学および理論化学