Long-time growth kinetics of first order phase transitions in the presence of a boundary layer
Abstract
The late stage growth mechanism for a first order phase transition, either through nucleation growth or spinodal decomposition, is well understood to be an Ostwald ripening or coarsening process, in which larger domains grow at the expense of smaller ones. The growth kinetics in this regime was shown by Lifshitz and Slyozov to follow a \documentclass[12pt]{minimal}\begin{document}$t^{1/3}$\end{document}t1/3 law. However, the kinetics is altered if there exists a barrier ahead of the growth front, irrespective of the physical origin of the boundary layer. We present an analytic calculation for the growth kinetics in the presence of a boundary layer, showing that in the limit of barrier-dominated growth, the domains grow with a \documentclass[12pt]{minimal}\begin{document}$t^{1/2}$\end{document}t1/2 law. This result holds true in the dilute regime independent of whether the growing nuclei are spherical or cylindrical.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 24, 2011
- Source ID
- 10.1063/1.3528002
Entities
People
- Mithun K. Mitra
- Murugappan Muthukumar
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- University of Massachusetts