Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Special Article: The 73rd CerSJ Awards for Advancements in Ceramic Science and Technology: Review
Soret effect in binary glass-forming oxide melts: theory and its verification
Masahiro SHIMIZU
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2019 Volume 127 Issue 8 Pages 507-513

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Abstract

Soret effect is temperature-gradient-driven mass diffusion in a multicomponent system. This paper reviews the recent progress of understanding the Soret effect in glass-forming oxide melts. A new model, called adjusted Kempers model, is proposed to quantitatively predict Soret coefficients in binary glass-forming oxide melts. The model is verified by experiment and molecular dynamics simulation. In a 11Na2O–89B2O3 (mol %) melt, the difference of the Soret coefficient of Na2O between experiment and theory is 19%. In the nonequilibrium molecular dynamics simulation of CaO–SiO2 glass melts, the Soret coefficient of SiO2 is decreased with SiO2 content and a sign change is observed, which is consistent with the adjusted Kempers model. These results indicate that the adjusted Kempers model is promising. Additionally, this paper reviews the laser-induced Soret effect in multicomponent glasses.

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