Structural Study of Lithium, Magnesium, and Barium Vanadate Glasses by Means of Mössbauer Spectroscopy
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- Tetsuaki Nishida
- Department of Chemistry, Faculty of Science, Kyushu University 33
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- Setsuko Saruwatari
- Department of Chemistry, Faculty of Science, Kyushu University 33
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- Yoshimasa Takashima
- Department of Chemistry, Faculty of Science, Kyushu University 33
抄録
<jats:title>Abstract</jats:title> <jats:p>All the isomer shifts for Li2O–, MgO–, and BaO–V2O5 glasses containing 10 mol% Fe2O3 are in a range of 0.39–0.37 mm s−1, indicating that iron is present as tetrahedral Fe3+ ions. This suggests that all the Fe3+ ions are present at the substitutional sites of tetrahedral V5+ or V4+ ions constituting the skeleton of each glass matrix. Distinct decreases in the quadrupole splitting and the glass transition temperatures are observed when Li2O is incorporated into V2O5 matrix, suggesting a gradual change of the glass matrix from the layer structure originally composed of VO5 tetragonal pyramids to a chain structure composed of VO4 tetrahedra. This structural change is essentially the same as that of Na2O– and K2O–V2O5 glasses. On the other hand, simultaneous increases in the quadrupole splitting and the glass transition temperatures are observed with increasing MgO or BaO content in the case of MgO– and BaO–V2O5 glasses. This suggests a gradual change of the glass matrix from the original layer structure to a highly complicated three-dimensional network structure composed of VO4 tetrahedra, similarly to the case of P2O5–V2O5 glasses.</jats:p>
収録刊行物
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 61 (7), 2343-2346, 1988-07-01
Oxford University Press (OUP)
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詳細情報 詳細情報について
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- CRID
- 1360846644033116032
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- NII論文ID
- 130001981021
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- ISSN
- 13480634
- 00092673
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- データソース種別
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