Abstract
A molecular dynamics study has been conducted on an external-force-field-induced isothermal crystallization process of amorphous structures as a new low-temperature athermal crystallization process. An external cyclic-force field with a dc bias is imposed on molecules selected randomly in an amorphous-phase of argon. Multiple peaks smoothed out in the radial distribution functions for amorphous states appear very clearly during the crystallization process that cannot be achieved otherwise. When the amorphous material is locally exposed to an external force field, crystallization starts and propagates from the interfacial region and crystallization growth rates can be estimated.
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Abbreviations
- A:
-
Amplitude of external force
- B:
-
DC bias for external fields
- F:
-
External force
- g:
-
Radial distribution function
- L:
-
Simulation domain size
- m:
-
Molecular mass
- N:
-
Total number of molecules
- γij :
-
Inter-distance between molecules i and j
- T:
-
Temperature
- X,Y,Z:
-
Cartesian coordinates
- ε:
-
Energy parameter
- ρ:
-
Number density
- σ:
-
Length parameter
- Φ:
-
Potential function
- τ:
-
Time
- *:
-
Dimensionless
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Park, S., Cho, S.S., Lee, J.S. et al. Molecular dynamics study on external field induced crystallization of amorphous argon structure. KSME International Journal 18, 2042–2048 (2004). https://doi.org/10.1007/BF02990446
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DOI: https://doi.org/10.1007/BF02990446