Non-linear model of impurity diffusion in nanoporous materials upon ultrasonic treatment

• Main Authors: R.M. Peleshchak, O.V. Kuzyk, O.O. Dan'kiv
• Format: Article
• Language: English
• Published: Institute for Condensed Matter Physics 2014-06-01
• Series: Condensed Matter Physics
• Subjects: diffusion coefficient; ultrasound; vacancy; pore
• Online Access: http://dx.doi.org/10.5488/CMP.17.23601

Non-linear theory of diffusion of impurities in porous materials upon ultrasonic treatment is described. It is shown that at a defined value of deformation amplitude, an average concentration of vacancies and temperature as a result of the effect of ultrasound possibly leads to the formation of nanoclusters of vacancies and to their periodic educations in porous materials. It is shown that at a temperature smaller than some critical value, a significant growth of a diffusion coefficient is observed in porous materials.