2005
DOI: 10.1007/s00339-004-2949-7
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Copper diffusion in ion-exchanged soda-lime glass

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Cited by 48 publications
(44 citation statements)
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“…An effective phenomenological description of the dopant diffusion is still lacking for field-assisted migration of multivalent species: the diffusion coefficients and so the activation energies depend on the local ionic concentration, which is related to the local structure modification. The migration of the ions is expected to be governed by the dynamics of the diffusion, while the chemistry of oxoreductive equilibrium should play a negligible role, as already observed in the case of copper [8].…”
Section: Introductionmentioning
confidence: 75%
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“…An effective phenomenological description of the dopant diffusion is still lacking for field-assisted migration of multivalent species: the diffusion coefficients and so the activation energies depend on the local ionic concentration, which is related to the local structure modification. The migration of the ions is expected to be governed by the dynamics of the diffusion, while the chemistry of oxoreductive equilibrium should play a negligible role, as already observed in the case of copper [8].…”
Section: Introductionmentioning
confidence: 75%
“…The diffusion coefficients therefore come to depend on the local concentration [18], giving rise to correlation effects between ionic fluxes similar to a mixed-alkali effect, where the transport parameters of the ion species may dramatically depend on the concentration [19,20]. The Au electro-assisted migration presented in this work cannot be described by the phenomenological approaches developed for describing other ion-exchange processes [8,21]. In fact, models usually assume the local charge neutrality, based on the constancy of the overall ionic concentration throughout the modified layer.…”
Section: Resultsmentioning
confidence: 96%
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“…The comparison of the measured data with self diffusion coefficients from literature is scarcely possible, however, some data on interdiffusion coefficients, obtained from ion exchange reactions Na + /Cu + have been published [40][41][42]. Frischat et al [40] studied the ion exchange process in a glass with the composition 31.8Na 2 O Á 5.8Al 2 O 3 Á 62.4SiO 2 and found an interdiffusion coefficient of 1.63Â10 À9 cm 2 s À1 at T g (477°C).…”
Section: Discussionmentioning
confidence: 99%
“…В случае ИО, несмотря на то, что расплав солей содержит ионы Cu 2+ , ИО происходит преимущественно между одновалентными ионами Cu + ↔ Na + , так как подвижность ионов Cu 2+ в стекле существенно меньше, чем подвижность ионов Cu + [20]. Профили концентрации ио-нов меди, введенной методом ИО, описанные в [21,22], подтверждают увеличение концентрации одно-валентных катионов меди и уменьшение концентрации натрия в поверхностных слоях образцов. Ионы двухвалентной меди образуют тонкий слой на поверхности стекла в результате ИО Cu 2+ ↔ 2Na + .…”
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