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Dynamic Observation of Dendritic Quasicrystal Growth upon Laser-Induced Solid-State Transformation.
- Source :
-
Physical Review Letters . 11/6/2020, Vol. 125 Issue 19, p1-1. 1p. - Publication Year :
- 2020
-
Abstract
- We report the laser-induced solid-state transformation between a periodic "approximant" and quasicrystal in the Al-Cr system during rapid quenching. Dynamic transmission electron microscopy allows us to capture in situ the dendritic growth of the metastable quasicrystals. The formation of dendrites during solid-state transformation is a rare phenomenon, which we attribute to the structural similarity between the two intermetallics. Through ab initio molecular dynamics simulations, we identify the dominant structural motif to be a 13-atom icosahedral cluster transcending the phases of matter. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 125
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 146902982
- Full Text :
- https://doi.org/10.1103/PhysRevLett.125.195503