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Influence of Mixed Na(2)O/K(2)O on Chemical Durability and Spectral Properties of P(2)O(5)-Al(2)O(3)-BaO-K(2)O-Na(2)O-Nd(2)O(3) Phosphate Glasses
A series of 56P(2)O(5)-7.5Al(2)O(3)-5.9BaO-(28.56-x)K(2)O-xNa(2)O-1.51Nd(2)O(3) phosphate glasses with different Na/(Na+K) ratios, which were specially designed for high-power laser application, were prepared by a high-temperature melting method. Except for the density, refractive index, glass trans...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9655674/ https://www.ncbi.nlm.nih.gov/pubmed/36363031 http://dx.doi.org/10.3390/ma15217439 |
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author | Ma, Xiben Xu, Yongchun Cheng, Jimeng Sun, Shiyu Chen, Youkuo Wang, Xin Chen, Wei Chen, Shubin Hu, Lili |
author_facet | Ma, Xiben Xu, Yongchun Cheng, Jimeng Sun, Shiyu Chen, Youkuo Wang, Xin Chen, Wei Chen, Shubin Hu, Lili |
author_sort | Ma, Xiben |
collection | PubMed |
description | A series of 56P(2)O(5)-7.5Al(2)O(3)-5.9BaO-(28.56-x)K(2)O-xNa(2)O-1.51Nd(2)O(3) phosphate glasses with different Na/(Na+K) ratios, which were specially designed for high-power laser application, were prepared by a high-temperature melting method. Except for the density, refractive index, glass transition temperature, and DC conductivity, the chemical durability and spectral properties, as emphasized by high-power and high-energy laser material, were further measured and analyzed. Regarding the chemical durability, the dissolution rates of these glasses do not show an evident mixed alkali effect with increasing the Na/(Na+K) ratio, although the effect is obvious for the glass transition temperature and DC conductivity. To better understand the nature of the dissolution mechanism, the ionic release concentrations of every element are determined. Both Na and K undergo ion exchange, but the ion exchange rate of K is much larger than that of Na. In terms of the spectral properties, the J–O parameters, emission cross-section, radiation lifetime, fluorescence lifetime, effective bandwidth, fluorescence branching ratio, and quantum efficiency are determined from absorption and emission spectra. The trend of Ω(2) deviating from linearity indicates that the coordination environment symmetry of Nd(3+) ions and the covalence of Nd-O also present an evident mixed alkali effect. The most important finding is that the emission cross-section and fluorescence lifetime of Nd(3+) ions at 1053 nm were not affected by the change in the Na/K ratio. According to the above experimental results, the optimized value of the Na/K ratio was determined, based on which the 56P(2)O(5)-7.5Al(2)O(3)-5.9BaO-(28.56-x)K(2)O-xNa(2)O-1.51Nd(2)O(3) glass maintains a high emission cross-section with good chemical durability. |
format | Online Article Text |
id | pubmed-9655674 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96556742022-11-15 Influence of Mixed Na(2)O/K(2)O on Chemical Durability and Spectral Properties of P(2)O(5)-Al(2)O(3)-BaO-K(2)O-Na(2)O-Nd(2)O(3) Phosphate Glasses Ma, Xiben Xu, Yongchun Cheng, Jimeng Sun, Shiyu Chen, Youkuo Wang, Xin Chen, Wei Chen, Shubin Hu, Lili Materials (Basel) Article A series of 56P(2)O(5)-7.5Al(2)O(3)-5.9BaO-(28.56-x)K(2)O-xNa(2)O-1.51Nd(2)O(3) phosphate glasses with different Na/(Na+K) ratios, which were specially designed for high-power laser application, were prepared by a high-temperature melting method. Except for the density, refractive index, glass transition temperature, and DC conductivity, the chemical durability and spectral properties, as emphasized by high-power and high-energy laser material, were further measured and analyzed. Regarding the chemical durability, the dissolution rates of these glasses do not show an evident mixed alkali effect with increasing the Na/(Na+K) ratio, although the effect is obvious for the glass transition temperature and DC conductivity. To better understand the nature of the dissolution mechanism, the ionic release concentrations of every element are determined. Both Na and K undergo ion exchange, but the ion exchange rate of K is much larger than that of Na. In terms of the spectral properties, the J–O parameters, emission cross-section, radiation lifetime, fluorescence lifetime, effective bandwidth, fluorescence branching ratio, and quantum efficiency are determined from absorption and emission spectra. The trend of Ω(2) deviating from linearity indicates that the coordination environment symmetry of Nd(3+) ions and the covalence of Nd-O also present an evident mixed alkali effect. The most important finding is that the emission cross-section and fluorescence lifetime of Nd(3+) ions at 1053 nm were not affected by the change in the Na/K ratio. According to the above experimental results, the optimized value of the Na/K ratio was determined, based on which the 56P(2)O(5)-7.5Al(2)O(3)-5.9BaO-(28.56-x)K(2)O-xNa(2)O-1.51Nd(2)O(3) glass maintains a high emission cross-section with good chemical durability. MDPI 2022-10-23 /pmc/articles/PMC9655674/ /pubmed/36363031 http://dx.doi.org/10.3390/ma15217439 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ma, Xiben Xu, Yongchun Cheng, Jimeng Sun, Shiyu Chen, Youkuo Wang, Xin Chen, Wei Chen, Shubin Hu, Lili Influence of Mixed Na(2)O/K(2)O on Chemical Durability and Spectral Properties of P(2)O(5)-Al(2)O(3)-BaO-K(2)O-Na(2)O-Nd(2)O(3) Phosphate Glasses |
title | Influence of Mixed Na(2)O/K(2)O on Chemical Durability and Spectral Properties of P(2)O(5)-Al(2)O(3)-BaO-K(2)O-Na(2)O-Nd(2)O(3) Phosphate Glasses |
title_full | Influence of Mixed Na(2)O/K(2)O on Chemical Durability and Spectral Properties of P(2)O(5)-Al(2)O(3)-BaO-K(2)O-Na(2)O-Nd(2)O(3) Phosphate Glasses |
title_fullStr | Influence of Mixed Na(2)O/K(2)O on Chemical Durability and Spectral Properties of P(2)O(5)-Al(2)O(3)-BaO-K(2)O-Na(2)O-Nd(2)O(3) Phosphate Glasses |
title_full_unstemmed | Influence of Mixed Na(2)O/K(2)O on Chemical Durability and Spectral Properties of P(2)O(5)-Al(2)O(3)-BaO-K(2)O-Na(2)O-Nd(2)O(3) Phosphate Glasses |
title_short | Influence of Mixed Na(2)O/K(2)O on Chemical Durability and Spectral Properties of P(2)O(5)-Al(2)O(3)-BaO-K(2)O-Na(2)O-Nd(2)O(3) Phosphate Glasses |
title_sort | influence of mixed na(2)o/k(2)o on chemical durability and spectral properties of p(2)o(5)-al(2)o(3)-bao-k(2)o-na(2)o-nd(2)o(3) phosphate glasses |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9655674/ https://www.ncbi.nlm.nih.gov/pubmed/36363031 http://dx.doi.org/10.3390/ma15217439 |
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