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Metastable quasicrystal-induced nucleation in a bulk glass-forming liquid

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Version 2 2024-06-06, 12:14
Version 1 2019-08-06, 13:09
journal contribution
posted on 2024-06-06, 12:14 authored by G Kurtuldu, KF Shamlaye, JF Löffler
Significance A model alloy, Mg 69 Zn 27 Yb 4 , concurrently forms bulk metallic glass, metastable quasicrystals (QCs), and crystalline approximant phases from the melt. We demonstrate that a transient QC phase nucleates first from the melt and subsequently transforms into an equilibrium approximant phase. This nucleation path is likely to be a general mechanism in metastable QC-forming systems. We observed a metastable-to-stable phase transformation when we deployed fast differential scanning calorimetry using the experimental strategy of interrupted cooling after the onset of crystallization followed by heating at ultrafast rates to “up-quench” the previously frozen structure. This strategy can yield the discovery of hidden transient phases that are key to understanding the crystallization behavior in metallic systems, polymers, biological solutions, and pharmaceutical substances.

History

Journal

Proceedings of the National Academy of Sciences of the United States of America

Volume

115

Pagination

6123-6128

Location

United States

ISSN

0027-8424

eISSN

1091-6490

Language

en

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2018, National Academy of Sciences

Issue

24

Publisher

Proceedings of the National Academy of Sciences

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