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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

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Autor(es):
Schmelzer, Juern W. P. [1] ; Abyzov, Alexander S. [2] ; Fokin, Vladimir M. [3, 4] ; Schick, Christoph [1] ; Zanotto, Edgar D. [3]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Rostock, Inst Phys, D-18057 Rostock - Germany
[2] Kharkov Inst Phys & Technol, Natl Sci Ctr, UA-61108 Kharkov - Ukraine
[3] Univ Fed Sao Carlos, Dept Mat Engn, Vitreous Mat Lab, BR-13565905 Sao Carlos, SP - Brazil
[4] Vavilov State Opt Inst, St Petersburg 193171 - Russia
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Journal of Non-Crystalline Solids; v. 429, p. 45-53, DEC 1 2015.
Citações Web of Science: 23
Resumo

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)

Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
Beneficiário:Edgar Dutra Zanotto
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs