Effects of ionic cross-linking on the non-exponentiality of the α-relaxation in metaphosphate glass melts as measured by dynamic light scattering
Source abstract
Abstract
Photon correlation spectroscopy was conducted on a series of metaphosphate glass melts to measure the liquid`s dynamic structure factor near the glass transition and thereby characterize the degree of non-exponentiality in its time decay. Each metaphosphate consists of polymeric chains of [PO 4] −1 monomers interspersed by a variety of modifying cations (Ag +, Ba 2, Ca 2+, Sr 2+) which can potentially form inter-chain crosslinks via ionic bonding. Our results show that the non-exponentiality of the α -relaxation decreases monotonically with increasing field strength of the cation-oxygen bond.
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Research context
OpenAlex topics: Glass properties and applications · Material Dynamics and Properties · Phase-change materials and chalcogenides
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References (37)
Show source-provided references
1. Review: the structure of simple phosphate glasses10.1016/S0022-3093(99)00620-1 ↗
2. Novel glass sealing technologies
3. Nd-doped phosphate glasses for high-energy/high-peak-power lasers10.1016/S0022-3093(99)00645-6 ↗
4. Phosphate glasses and glass-ceramics for medical applications
5. A model for phosphate glass topology considering the modifying ion sub-network10.1063/1.4870764 ↗
6. Dynamic light scattering in network-forming sodium ultra-phosphate liquids near the glass transition10.1103/PhysRevB.80.064201 ↗
7. Behavior of viscosity in metaphosphate glasses10.1016/j.jnoncrysol.2013.10.021 ↗
8. Structure and fragility of Zn-phosphate glasses: results from multinuclear NMR spectroscopy and calorimetry10.1016/j.jnoncrysol.2022.121395 ↗
9. Supercooled liquids and glasses10.1021/jp953538d ↗
10. Fragility of Ge-As-Se glass-forming liquids in relation to rigidity percolation and the Kauzmann paradox10.1103/PhysRevLett.64.1549 ↗
11. Composition dependence of glass transition temperature and fragility II: a topological model of alkali borate liquids10.1063/1.3152432 ↗
12. Fragility of network-forming glasses: a universal dependence on the topological connectivity10.1103/PhysRevE.92.062804 ↗
13. Role of intermediate-range order in predicting the fragility of network-forming liquids near the rigidity transition10.1103/PhysRevB.87.054202 ↗
14. The atomic arrangement in glass10.1021/ja01349a006 ↗
15. Zarzycki · 1991
16. Relationships between fragility and structure through viscosity and high temperature NMR measurements in Li2O-ZnO-P2O5 phosphate glasses10.1016/j.jnoncrysol.2015.08.006 ↗
17. Assessing the network connectivity of modifier ions in metaphosphate glass melts: a dynamic light scattering study of Na-Zn mixtures10.1063/1.4965815 ↗
18. Structural specifices of phosphate glasses probed by diffraction methods: a review10.1016/S0022-3093(99)00621-3 ↗
19. Glass transition in ionic polymers10.1002/pol.1966.160040603 ↗
20. Fragility and rheological behavior of metaphosphate liquids: insights into their chain vs. network characters10.1016/j.jnoncrysol.2019.03.036 ↗
21. Cationic constraint effects in metaphosphate glasses10.1063/1.4879559 ↗
22. Supercooled liquids and the glass transition10.1038/35065704 ↗
23. Colloquium: the glass transition and elastic models of glass-forming liquids10.1103/RevModPhys.78.953 ↗
24. Scaling in the relaxation of supercooled liquids10.1103/PhysRevLett.65.1108 ↗
25. Jonscher · 1983
26. McCrum · 1991
27. Berne · 1976
28. Dynamic light scattering in mixed alkali metaphosphate glass forming liquids10.1063/1.2210936 ↗
29. Fig. 3 includes data from an unpublished PCS study of NaPO3 made in 2016.
30. Segmental mobility of polymers near their glass temperature10.1063/1.1698677 ↗
31. Correlation of polymer segmental chain dynamics with temperature-dependent time-scale shifts10.1021/ma00005a044 ↗
32. Nonexponential relaxations in strong and fragile glass formers10.1063/1.466117 ↗
33. Rheological characterization of complex dynamics in Na-Zn metaphosphate glass-forming liquids10.1063/5.0060360 ↗
34. Perspective: supercooled liquids and glasses10.1063/1.4747326 ↗
35. Spatially heterogeneous dynamics in supercooled liquids10.1146/annurev.physchem.51.1.99 ↗
36. Generic α relaxation in a strong GeO2 glass melt10.1103/PhysRevE.107.L012602 ↗
37. Why many polymers are so fragile