Structure, Structural Relaxation and Ion Transport in Sodium Disilicate Melts

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We have investigated Na2SiO5 melts with inelastic neutron scattering at temperatures up to 1600K. The Si-O network relaxes on a time scale of ns, whereas the Na ion relaxation dynamics are found on a time scale of 10ps. The elastic structure factor exhibits at ~0.9A-1 an emerging prepeak which becomes more pronounced with increasing temperature. The prepeak is caused by the formation of sodium rich regions in the partially disrupted Si-O tetrahedral network.

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Materials Science, Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/19435

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0206168
 http://arxiv.org/abs/cond-mat/0206168

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arXiv