Structure of Alkali‐Zinc Silicate Glasses by Raman Spectroscopy

Minser, David G.; Walden, Barbara L.; White, William Β.

doi:10.1111/j.1151-2916.1984.tb19753.x

Cited by 22 publications

(4 citation statements)

References 8 publications

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“…This means that their structural role in the glass can switch, and they can act as modifiers (creating NBO) or enter the silicate network (which will reduce the number of NBO owing to the formation of [MO 4 ] 2-complexes (where M= Mg or Zn) which require cations such as Na + or Ca 2+ to charge balance). The total amount of network modifier ions present in the glass seems to play a role here, with a large concentration of other network modifiers increasing the likelihood of intermediate oxides entering the network [23][24][25][26]. In highly disrupted glasses such as phosphate invert glasses or bioactive silicate glasses, magnesium and zinc can be expected to at least partially enter the network [25], and magnesium has, indeed, been shown to inhibit spontaneous crystallisation and facilitate glass formation in pyrophosphate glasses [8].…”

Section: Discussionmentioning

confidence: 94%

Multicomponent phosphate invert glasses with improved processing

Brauer¹,

Wilson²,

Kasuga³

2012

Journal of Non-Crystalline Solids

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Section: Discussionmentioning

confidence: 94%

Multicomponent phosphate invert glasses with improved processing

Brauer¹,

Wilson²,

Kasuga³

2012

Journal of Non-Crystalline Solids

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“…Zinc and oxygen are four‐coordinate in the Wurtzite‐type ZnO crystal. However, several reports suggest that Zn in oxide glasses may adopt either the four‐ or six‐coordination state . One coordination state plays a role in network formation whereas the other is active in network modification.…”

Section: Resultsmentioning

confidence: 99%

Correlation between Surface-Crystallized ZnO and the Amount of Al2O3 in Borate-Based Glass-Ceramics

Masai

Ueno

Takahashi

et al. 2011

Journal of the American Ceramic Society

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The correlation between the Al 2 O 3 content and the crystallization behavior of the oxide semiconductor ZnO in 5CaO-25B 2 O 3 -45ZnO-xAl 2 O 3 -10K 2 O-15SiO 2 (CaBZAKSx) glass-ceramics was investigated, with a particular focus on the c-oriented crystallization behavior of ZnO. C-oriented precipitation of ZnO crystallites in glass-ceramics is brought about by the in-plane crystal growth of ZnO along the a-axis. Addition of Al 2 O 3 promotes the formation of ZnO 4 rather than ZnO 6 in the mother glass, and the ZnO 4 unit affects the nucleation and selective crystallization of ZnO that also takes the four-coordination state of Zn. The present results suggest that crystallization of ZnO from multi-component glass is also dominated by the local coordination state of the mother glass.

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“…Therefore, Zn was classified as a network modifier in sodium silicate glasses. 28 Similarly, a MAS-NMR measurement was carried out on a series of alkali-zinc-silicate glasses containing both lithium and sodium and a small amount of P 2 O 5 and B 2 O 3 . The 29 Si MAS-NMR spectra showed the dependence of Q n distribution on composition: with increasing ZnO, the amount of Q 4 decreases and that of Q 2 increases, while Q 3 stays constant almost for all compositions, indicating fewer bridging oxygens in the network.…”

Section: Introductionmentioning

confidence: 99%

Structure and diffusion of ZnO–SrO–CaO–Na2O–SiO2 bioactive glasses: a combined high energy X-ray diffraction and molecular dynamics simulations study

Xiang

Skinner

et al. 2013

RSC Adv.

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Novel bioactive glasses that can release ions such as strontium and zinc provide bone growth enhancement and antibacterial properties that earlier-generation bioglasses did not possess. These glasses find applications in bone cementation, restoration and in tissue engineering. In this paper, we present combined experimental and simulation studies to explain the structure and diffusion of ZnO-SrO-CaO-Na 2 O-SiO 2 bioactive glasses with the aim of understanding the short and medium range structure of these glasses, the structural correlation to their dissolution behaviors, and their bioactivity. High energy X-ray diffraction experiments have been performed to obtain structural information and to validate the structure models from simulations. Three glass compositions with ZnO/Na 2 O substitutions have been studied using molecular dynamics simulations to characterize the glass structure and calculate the ionic diffusion in these glasses. The results provide insight to local environments and structural role of zinc ions, the medium range structural features such as Q n distribution, and ionic diffusion characteristics of these bioactive glasses. The structure and ionic diffusion results are discussed in correlation to the dissolution behaviors and the bioactivity of these glasses.

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Structure of Alkali‐Zinc Silicate Glasses by Raman Spectroscopy

Cited by 22 publications

References 8 publications

Multicomponent phosphate invert glasses with improved processing

Multicomponent phosphate invert glasses with improved processing

Correlation between Surface-Crystallized ZnO and the Amount of Al2O3 in Borate-Based Glass-Ceramics

Structure and diffusion of ZnO–SrO–CaO–Na2O–SiO2 bioactive glasses: a combined high energy X-ray diffraction and molecular dynamics simulations study

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