3D Growth Kinetics of Precipitates with Anisotropic Interfacial Free Energy: A Phase-Field Study

2015 ◽  
Vol 68 (S2) ◽  
pp. 177-183 ◽  
Author(s):  
Arijit Roy ◽  
M. P. Gururajan
Keyword(s):  
Free Energy ◽  
Field Study ◽  
Growth Kinetics ◽  
Phase Field ◽  
Interfacial Free Energy ◽  
Kinetics Of

Multiscale Modelling of the Ageing Kinetics of a 2D Deposit

2011 ◽  
Vol 172-174 ◽  
pp. 664-669 ◽  
Author(s):  
Fabienne Berthier ◽  
Emile Maras ◽  
Isabelle Braems ◽  
Bernard Legrand
Keyword(s):  
Solid Solution ◽  
Free Energy ◽  
Kinetic Monte Carlo ◽  
Interfacial Free Energy ◽  
Precipitation Kinetics ◽  
Coalescence Model ◽  
Time Space ◽  
Constrained Equilibrium ◽  
Kinetic Monte Carlo Simulations ◽  
Kinetics Of

We compare three models of 2D precipitation kinetics that give access to different time-space scales. Kinetic Monte Carlo simulations (KMC), cluster dynamics (CD) and nucleation-growth-coalescence model (NGCM), based on a same atomic model, lead to an excellent agreement as long as the interfacial free energy is evaluated accurately and the interaction between diffusion fields is taken into account in the CD. The NGCM model noticeably improves the previous approaches of the same kind by using a constrained-equilibrium hypothesis to describe the solid solution. Moreover, in the coalescence regime, we show that CD leads to cluster distributions that are wider and more symmetric than the LSW distribution due to the probabilistic feature of the growth law of a cluster, that makes it differ from the purely deterministic NGCM approach.

scholarly journals Свободная энергия образования зародыша при росте III-V нитевидного нанокристалла

2020 ◽  
Vol 46 (18) ◽  
pp. 3
Author(s):  
В.Г. Дубровский ◽  
А.С. Соколовский ◽  
И.В. Штром
Keyword(s):  
Free Energy ◽  
Growth Kinetics ◽  
Crystal Phase ◽  
Vapor Liquid Solid ◽  
Group V ◽  
Catalyst Droplet ◽  
Phase Nucleation ◽  
Kinetics Of ◽  
Vapor Liquid Solid Growth ◽  
Vapor Liquid

An expression for the free energy of forming an island from a catalyst droplet in the vapor-liquid-solid growth of III-V nanowires is obtained. The effect of the droplet depletion with its group V (As) content is studied in the presence of material influx from vapor. Different growth regimes of a nanowire monolayer are theoretically analyzed, including the regime with the stopping size under very low As concentrations in liquid. It is shown that the island stops growing when the As content in the droplet decreases to its equilibrium value. The obtained results should be useful for understanding and modeling the growth kinetics of III-V nanowires, their crystal phase, nucleation statistics and length distributions within the ensembles of nanowires as well as the doping process.

On the kinetics of dendritic sidebranching: A three dimensional phase field study

2016 ◽  
Vol 119 (16) ◽  
pp. 164305 ◽  
Author(s):  
Shan Shang ◽  
Zhipeng Guo ◽  
Zhiqiang Han
Keyword(s):  
Field Study ◽  
Phase Field ◽  
Three Dimensional ◽  
Kinetics Of

Interfacial free energy adjustable phase field crystal model for homogeneous nucleation

Soft Matter ◽  
2016 ◽  
Vol 12 (20) ◽  
pp. 4666-4673 ◽  
Author(s):  
Can Guo ◽  
Jincheng Wang ◽  
Zhijun Wang ◽  
Junjie Li ◽  
Yaolin Guo ◽  
...  
Keyword(s):  
Free Energy ◽  
Phase Field ◽  
Homogeneous Nucleation ◽  
Interfacial Free Energy ◽  
Crystal Model ◽  
Phase Field Crystal
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