Nonisothermal nucleation in the CuCl solid solution in glass: Formation of two distributions of nanoparticles of a new phase in the solid solution with a negative jump of the nucleation temperature

Nonisothermal nucleation in the CuCl solid solution in glass: Nucleation under continuous cooling of the solid solution

“…In [10,11], this method was applied to a step by step annealing, and a satisfactory agreement with the experimental results was achieved.…”

“…The volume distribution of the CuCl phase over the particle radii f V (r), as in [10,11], was obtained using the experimental melting intensity curves of CuCl nanocrystals, namely, the curves dK/dT (Fig. 3), as well as the relationship for the dependence of the melting temperature of CuCl nanocrystals on the par ticle radius (3) where the melting temperature T ∞ of CuCl microcrys tals and the parameter a were obtained from the exper imental data [6,8].…”

“…TECHNIQUE, AND RESULTS As the model solid solution, we used the CuCl solid solution in glass of the same composition as in [10,11]. After the nucleation during cooling of the sample, the fundamental absorption spectra of CuCl nanoc rystals were measured and the kinetics of their melting was investigated using the exciton thermal analysis (ETA).…”

“…In [10], it was shown that an abrupt change in the critical radius for the CuCl nanomelt in glass with a nucleation temperature jump from 500 to 650°C leads to the dissolution of CuCl phase nuclei in the sample. In [11], it was found that, in the case of a neg ative temperature jump during the nucleation (from 700 to 500°C), there can arise two distributions of CuCl nanoparticles in glass with significantly different average sizes.…”

“…Experimental investigations of the kinetics of nucleation on model solutions were also performed at a fixed temperature [4][5][6][7][8][9] or with a temperature jump [10,11]. Under nonisothermal conditions, changes in the supersatu ration and critical radius are caused by both the nucle ation and variation in the temperature, which makes it possible to control the growth of a new phase and to obtain new data for the development of the nucleation theory.…”