Cation speciation, compactness, and structure-property correlations in manganese aluminosilicate glasses
SCIE
SCOPUS
- Title
- Cation speciation, compactness, and structure-property correlations in manganese aluminosilicate glasses
- Authors
- So, Byoungjin; Ding, Yicong; Limbach, René; Pyo, Jae-Young; de Macedo, Guilherme N. B. M.; Li, Kai; Friebe, Christian; Otto, Felix; Schaal, Maximilian; Liu, Chao; Heo, Jong; Wondraczek, Lothar
- Date Issued
- 2022-01
- Publisher
- John Wiley and Sons Inc
- Abstract
- © 2022 The Authors. Journal of the American Ceramic Society published by Wiley Periodicals LLC on behalf of American Ceramic Society.We report on the elastic properties of xMnO-Al2O3-(6-x)SiO2 manganese aluminosilicate glasses, in which pronounced exchange coupling and antiferromagnetic interaction occurs among the paramagnetic Mn2+ ions. X-ray absorption reveals a Mn-O bond length of ∼2.1 Å, and a distance of ∼3 Å between Mn2+ ions in sixfold coordination, further corroborated by electron paramagnetic resonance and dynamic photoluminescence spectroscopy. This indicates the presence of edge-sharing MnO6 units, in resemblance to edge-sharing MnO8 in the crystalline Spessartine garnet Mn3Al2[SiO4]3. We argue that these cluster species have a profound effect on material stiffness: the compact structure of manganese aluminosilicate glasses enables a Young's modulus in the 100 GPa range and a Poisson's ratio of about 0.3. This exceeds the compositional trend with cation field strength observed for other aluminosilicate glasses.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/117927
- DOI
- 10.1111/jace.18640
- ISSN
- 0002-7820
- Article Type
- Article
- Citation
- Journal of the American Ceramic Society, vol. 105, no. 12, page. 7171 - 7185, 2022-01
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