Nonisothermal nucleation in a solid solution of CuCl in glass: Concentration effect upon heating of the solid solution

• Published in: Physics of the solid state Vol. 59; no. 9; pp. 1836 - 1840
• Main Authors: Leiman, V. I., Ashkalunin, A. L., Derkacheva, O. Yu, Maksimov, V. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.09.2017; Springer; Springer Nature B.V
• Subjects: Clusters; Computer simulation; Copper chloride; Heating; Heating rate; Low-Dimension Systems; Nanoparticles; Nucleation; Numerical analysis; Particle size distribution; Physics; Physics and Astronomy; Solid solutions; Solid State Physics; Supersaturation; Thermal analysis
• ISSN: 1063-7834; 1090-6460
• DOI: 10.1134/S1063783417090177

The influence of the heating rate of a solid solution of CuCl in glass on the size distribution of the produced CuCl nanoparticles is studied. The distribution curves of CuCl nanocrystals are determined by the method of exciton-thermal analysis. It is established that the concentration of CuCl nanoparticles increases by ten times upon slowing the sample heating process from 2 to 60 min, while the mean radius of particles decreases almost twice. The concentration of CuCl nanoparticles passes through a maximum in the process of heating the sample. The numerical simulation of the nucleation upon slow heating of a solid solution showed that the formation of the concentration maximum of the new phase clusters is determined by a rapid increase in the critical radius owing to an increase in temperature and decrease in the solution supersaturation. As a result, the formation of new phase nuclei ceases at a certain temperature, and a part of the previously formed clusters dissolves.