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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ilica incorporation into sodium aluminum phosphate glasses: Structural characterization by Raman spectroscopy and multinuclear solid-state NM

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Author(s):
Logrado, Millena [1] ; Eckert, Hellmut [1, 2] ; Ikeda, Hikaru [3] ; Nakane, Shingo [3] ; Yamazaki, Hiroki [3]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Inst Fis Sao Carlos, CP 369, BR-13566590 Sao Carlos, SP - Brazil
[2] Westfalische Wilhelms Univ Munster, Inst Phys Chem, Corrensstr 30, D-48149 Munster - Germany
[3] Nippon Elect Glass Co Ltd, 7-1 Seiran 2 Chome, Otsu, Shiga 5208639 - Japan
Total Affiliations: 3
Document type: Journal article
Source: Journal of Non-Crystalline Solids; v. 579, MAR 1 2022.
Web of Science Citations: 0
Abstract

Optical fiber glasses in the system (59-xP(2)O(5))-xSiO(2)-13Al(2)O(3)-28Na(2)O show non-linear trends in the glasstransition temperatures, thermal expansion coefficients, and weathering stabilities. The structural origins have been studied using solid-state NMR and Raman spectmscopies on a series of bulk glasses with 0 <= x <= 13. Two types of P-2 units - those dominantly interacting with Na+ and those interacting more strongly with Al can be differentiated by P-31[Na-23] and P-31[Al-27] double resonance experiments. Silicon is four-coordinated, fully polymerized, and engaged in Si-O-P linkages. Trends in the Si-29 chemical shifts and the P-31-P-31 dipolar interaction strengths are related to the Si-O-P, Si-O-Al, and P-O-P connectivity distributions, providing a rationale for changes in macroscopic properties. (AU)

FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
Grantee:Edgar Dutra Zanotto
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC