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Dynamic Observation of Dendritic Quasicrystal Growth upon Laser-Induced Solid-State Transformation
- Source :
- Physical Review Letters. 125
- Publication Year :
- 2020
- Publisher :
- American Physical Society (APS), 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.
- Subjects :
- Quenching
Materials science
Icosahedral symmetry
Intermetallic
General Physics and Astronomy
Quasicrystal
01 natural sciences
Condensed Matter::Materials Science
Transmission electron microscopy
Chemical physics
Metastability
0103 physical sciences
Cluster (physics)
010306 general physics
Structural motif
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 125
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....87b58ebe92145e950cd82608dbe2ab02