ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
A complete set of equations describing the evolution of phase composition of an island ensemble at the stage of the Ostwald ripening in the process of thin-film growth is derived and its solution is found. The size distribution function of islands in solid solutions is obtained for different types of growth mechanisms. The general approach to control phase composition and associated properties (electric, optical, mechanical, and others) in formed multicomponent systems is elaborated. It is shown that the most favorable conditions to control these properties occur at the Ostwald ripening stage and also during nonlinear phenomena, such as self-excited oscillations or self-organization. The relationship between size and composition of the new phase nuclei formed in the course of condensation of solid solution films is revealed. A set of equations describing the evolution of the size distribution function of the properties in island films of solid solutions during changes in external parameters of the system is derived and solved. We show that substantial dependence of composition on external parameters is revealed for the sizes of islands with radius R≤10−8 m, irrespective of the type of substance. For island-type films of stoichiometric composition, the diagram for coexistence of appropriate properties is plotted in the concentration-temperature coordinates that allows to us determine the conditions required to obtain the properties. Probable periodic changes in time and space of various properties on multicomponent systems undergoing the first order phase transition are predicted. © 1999 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.370896
