Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 11, Issue 16, Pages 6718-6723Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.0c01789
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Funding
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB30000000]
- National Key Research and Development Plan [2018YFA0703603]
- National Natural Science Foundation of China [11790291, 61999102, 61888102, 51971238]
- Natural Science Foundation of Guangdong Province [2019B030302010]
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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 metallicglass-forming liquids.
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