The local structure of Sm-doped aluminosilicate glasses prepared by sol-gel method

Jisun Jin; Shinichi Sakida; Toshinobu Yoko; Masayuki Nogami

doi:10.1016/S0022-3093(99)00696-1

The local structure of Sm-doped aluminosilicate glasses prepared by sol-gel method

Jisun Jin, Shinichi Sakida, Toshinobu Yoko, Masayuki Nogami

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

The local structures of Sm and Al in Sm-doped aluminosilicate glasses prepared by the sol-gel method were investigated by using ²⁷A1 MAS NMR spectroscopy and X-ray radial distribution function (RDF) analysis. It is found that at low alumina content (1 mol%), the glass network consists of SiO₄ and AlO₆ structural units. At higher alumina content, AlO₄ and ALO₆ structural units coexist in the glasses. It is considered that the formation of AlO₄ results in enhancement of the dispersion of Sm ions in these glasses. The average coordination number of Sm in a 10Al₂O₃ · 90SiO₂ · 1Sm₂O₃ glass slightly increased from 7.1 to 8.5 after heat-treatment in reducing atmosphere. The role of Al ions in dispersing Sm ions in a glass matrix is discussed.

Original language	English
Pages (from-to)	183-190
Number of pages	8
Journal	Journal of Non-Crystalline Solids
Volume	262
Issue number	1-3
DOIs	https://doi.org/10.1016/S0022-3093(99)00696-1
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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10.1016/S0022-3093(99)00696-1

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title = "The local structure of Sm-doped aluminosilicate glasses prepared by sol-gel method",

abstract = "The local structures of Sm and Al in Sm-doped aluminosilicate glasses prepared by the sol-gel method were investigated by using 27A1 MAS NMR spectroscopy and X-ray radial distribution function (RDF) analysis. It is found that at low alumina content (1 mol%), the glass network consists of SiO4 and AlO6 structural units. At higher alumina content, AlO4 and ALO6 structural units coexist in the glasses. It is considered that the formation of AlO4 results in enhancement of the dispersion of Sm ions in these glasses. The average coordination number of Sm in a 10Al2O3 · 90SiO2 · 1Sm2O3 glass slightly increased from 7.1 to 8.5 after heat-treatment in reducing atmosphere. The role of Al ions in dispersing Sm ions in a glass matrix is discussed.",

author = "Jisun Jin and Shinichi Sakida and Toshinobu Yoko and Masayuki Nogami",

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doi = "10.1016/S0022-3093(99)00696-1",

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T1 - The local structure of Sm-doped aluminosilicate glasses prepared by sol-gel method

AU - Jin, Jisun

AU - Sakida, Shinichi

AU - Yoko, Toshinobu

AU - Nogami, Masayuki

PY - 2000

Y1 - 2000

N2 - The local structures of Sm and Al in Sm-doped aluminosilicate glasses prepared by the sol-gel method were investigated by using 27A1 MAS NMR spectroscopy and X-ray radial distribution function (RDF) analysis. It is found that at low alumina content (1 mol%), the glass network consists of SiO4 and AlO6 structural units. At higher alumina content, AlO4 and ALO6 structural units coexist in the glasses. It is considered that the formation of AlO4 results in enhancement of the dispersion of Sm ions in these glasses. The average coordination number of Sm in a 10Al2O3 · 90SiO2 · 1Sm2O3 glass slightly increased from 7.1 to 8.5 after heat-treatment in reducing atmosphere. The role of Al ions in dispersing Sm ions in a glass matrix is discussed.

AB - The local structures of Sm and Al in Sm-doped aluminosilicate glasses prepared by the sol-gel method were investigated by using 27A1 MAS NMR spectroscopy and X-ray radial distribution function (RDF) analysis. It is found that at low alumina content (1 mol%), the glass network consists of SiO4 and AlO6 structural units. At higher alumina content, AlO4 and ALO6 structural units coexist in the glasses. It is considered that the formation of AlO4 results in enhancement of the dispersion of Sm ions in these glasses. The average coordination number of Sm in a 10Al2O3 · 90SiO2 · 1Sm2O3 glass slightly increased from 7.1 to 8.5 after heat-treatment in reducing atmosphere. The role of Al ions in dispersing Sm ions in a glass matrix is discussed.

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The local structure of Sm-doped aluminosilicate glasses prepared by sol-gel method

Abstract

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