Slow dynamics in ion-conducting sodium silicate melts: Simulation and mode-coupling theory
Slow dynamics in ion-conducting sodium silicate melts: Simulation and mode-coupling theory
复制标题
离子传导硅酸钠熔体的慢动力学:模拟和模式耦合理论
DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
J. Horbach
中科院分区:
文献类型:
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作者:
T. Voigtmann;J. Horbach
Calculations within the mode-coupling theory of the glass transition (MCT) are used to elucidate the structure-dynamics relation in sodium-silicate melts (NSx) of varying sodium concentration. Using only the partial static structure factors from molecular-dynamics (MD) computer simulation as input, MCT qualitatively reproduces the large separation in relaxation time scales between the sodium and the silicon/oxygen components peculiar to such mixtures. This shows that it is possible to explain the fast sodium-ion dynamics observed in sodium-silicate melts using MCT as a microscopic theory, and from the averaged equilibrium structure alone.