1 November 1991 XPS, IR, and Mossbauer studies of lithium phosphate glasses containing iron oxides
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Abstract
Lithium phosphate glasses with different iron oxide contents were prepared using a rapid quenching technique and their glass transition temperatures (Tg), densities (d) and refractive indexes (n) were measured.X-ray photoelectron spectroscopy(XPS), infrared spectroscopy(IR) and Mossbauer spectroscopy have been used to study structure of the glasses and oxidation states of iron. These results indicate that both the Fe2+ and Fe3+ ions are present in the phosphate glasses, and that Fe2+ ions are coordinated with both four and six oxygen, but Fe2+ ions are only in six coordination, and that the physical and optical properties depended on the Fe2+/Fe ratio and Fe3+(4-coordinated)/Fe ratio. The XPS spectra and Mossbauer effect measurements showed that an increase in the Fe203 content causes a decrease of Fe2+/Fe ratio and an increase Fe3+(4-coordinated)/Fe ratio. The infrared measurements showed that an increase in the Fe203 content causes a change in coordination from Fe06 to FeO4.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Guomei Wang, Jiaheng Lei, Huaishun Yun, Liping Guo, Baohui Jin, "XPS, IR, and Mossbauer studies of lithium phosphate glasses containing iron oxides", Proc. SPIE 1590, Submolecular Glass Chemistry and Physics, (1 November 1991); doi: 10.1117/12.50216; https://doi.org/10.1117/12.50216
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