A S Shirinyan and M Wautelet 2004 Nanotechnology 15 1720 doi:10.1088/0957-4484/15/12/004
A S Shirinyan1 and M Wautelet2
Show affiliationsThe influences of the size, thermodynamic quantities and depletion of the parent phase on the separation thermodynamics of nanosized supersaturated binary solid solutions are studied theoretically. A quantitative analysis of the nucleation of one nucleus and of the decomposition in small isolated nanoparticles is presented. It is shown that three possibilities exist: phase separation, prohibition of decomposition, and formation of the metastable state of the nanoalloy. The conservation of matter leads to constraints on nucleation and growth of new phases. The case of solid–solid transition phenomena in a nanosystem is studied for regular solutions. This model leads to the existence of multiple equilibrium configurations for the same sets of initial parameters.
Phase diagrams of small particles, i.e. probability-size, nucleation barrier-solubility, temperature-composition, are plotted within a regular solution model.
64.70.K- Solid–solid transitions
61.46.-w Structure of nanoscale materials
Soft matter, liquids and polymers
Issue 12 (December 2004)
Received 14 July 2004, in final form 22 September 2004
Published 3 November 2004
A S Shirinyan and M Wautelet 2004 Nanotechnology 15 1720
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