Linear stability analysis of phase separation in nanoscale systems

✍ Scribed by J.J. Hoyt

• Book ID: 103998708
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 327 KB
• Volume: 57
• Category: Article
• ISSN: 1359-6454
• DOI: 10.1016/j.actamat.2008.10.044

✦ Synopsis

A linear stability analysis of the early stages of spinodal decomposition in nanospheres has been performed. The dominant decomposition mode is described in terms of a stability map, which defines regions of the fastest growing composition modulation in a space of particle radius and k m , where k m is the most unstable mode in the bulk system. It is shown that at sufficiently small particle size the first unstable mode is the non-radially symmetric first-order spherical harmonic. The analysis is extended to the case of nanowires and the interplay between decomposition along the wire length vs. radial and angular perturbations is discussed.