Crystallization in glass-forming liquids: Effects of decoupling of diffusion and viscosity on crystal growth

Author(s)

Schmelzer, Juern W. P. ^[1] ; Abyzov, Alexander S. ^[2] ; Fokin, Vladimir M. ^{[3, 4]} ; Schick, Christoph ^[1] ; Zanotto, Edgar D. ^[4]

Affiliation

^[1] Univ Rostock, Inst Phys, D-18057 Rostock - Germany

^[2] Kharkov Inst Phys & Technol, Natl Sci Ctr, UA-61108 Kharkov - Ukraine

^[3] Vavilov State Opt Inst, St Petersburg 193171 - Russia

^[4] Univ Fed Sao Carlos, Dept Mat Engn, Vitreous Mat Lab, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Journal of Non-Crystalline Solids; v. 429, p. 45-53, DEC 1 2015.
• Web of Science Citations: 23

Abstract

The effect of decoupling of viscosity and diffusion, i.e. of the breakdown of the Stokes-Einstein-Eyring equation, on crystal growth processes is analyzed. A criterion is formulated which gives the possibility to establish, based exclusively on experimentally measurable data, whether and at which temperature decoupling occurs in a given system. The results of our analysis are compared with alternative approaches. A theoretical model is advanced allowing one to describe the crystal growth kinetics in the whole temperature range where crystallization may proceed, i.e., between the absolute zero and the melting or liquidus temperature. A relation is derived allowing one to correlate the decoupling temperature with the glass transition temperature, and the fragility of the liquid. The results are confirmed by experimental data. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
• Grantee: Edgar Dutra Zanotto
• Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC