| Title: |
Zinc borate glasses: properties, structure and modelling of the composition-dependence of borate speciation |
| Authors: |
Möncke, Doris; Topper, Brian; Youngman, Randall; Valvi, Christina; Kamitsos, Efstratios; Varsamis, Christos |
| Publisher Information: |
Royal Society of Chemistry |
| Publication Year: |
2023 |
| Collection: |
Alfred University Research and Archive (AURA) |
| Description: |
This article is published open access in Physical Chemistry Chemical Physics, also available at https://doi.org/10.1039/D2CP05517A. Made available under the CC BY-NC 4.0 license. ; The short-range order of binary zinc borate glasses, xZnO–(1−x)B2O3, has been quantitatively described as a function of ZnO content over the entire glass forming range for the first time, to the best of our knowledge. Multiple spectroscopic techniques (11B NMR, Raman, infrared) reveal detailed structural information regarding borate speciation and network connectivity, and a new model for quantifying the molar fractions of short-range order units is proposed. A consistent thermal history dependence for the fraction of tetrahedral boron (N4) is well accounted for by the proposed model. The model predicts density within 0.1% of experimental values and N4 to within 1% of NMR values. The intermediate character of four-coordinated zinc in borate glasses of this series is evident by the far infrared profiles and the glass transition temperature behavior, which decreases non-monotonically with increasing ZnO content. ; EIK, CPV and CV acknowledge support from “National Infrastructure in Nanotechnology, Advanced Materials and Micro-/Nanoelectronics” (MIS 5002772), co-financed by Greece and the European Union (European Regional Development Fund). BT and DM acknowledge the generosity of Dr Scott Misture (Alfred University) for permitting use of instrumentation for XRD, Raman and infrared studies. The WITec Raman data is based upon work supported by the National Science Foundation under Grant No. DMR-1626164. The publication of the article in OA mode was financially supported by HEAL-Link. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://doi.org/10.1039/D2CP05517A; https://hdl.handle.net/10829/30899 |
| Availability: |
https://hdl.handle.net/10829/30899 |
| Rights: |
https://creativecommons.org/licenses/by-nc/4.0/ |
| Accession Number: |
edsbas.DB48FDEF |
| Database: |
BASE |