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XPS IR and Mossbauer studies of lithium phosphate glasses containing iron oxides

机译:XPS IR和Mossbauer研究含有铁氧化物的磷酸锂玻璃

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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 Fe$+2$PLU$/ and Fe$+3$PLU$/ ions are present in the phosphate glasses, and that Fe$+3$PLU$/ ions are coordinated with both four and six oxygen, but Fe$+2$PLU$/ ions are only in six coordination, and the physical and optical properties depend on the Fe$+2$PLU$//Fe ratio and Fe$+3$PLU$/(4-coordinated)/Fe ratio. The XPS spectra and Mossbauer effect measurements show that an increase in the Fe$-2$/O$-3$/ content causes a decrease of Fe$+2$PLU$//Fe ratio and an increase in the Fe$+3$PLU$/(4-coordinated)/Fe ratio. The infrared measurements show that an increase in the Fe$-2$/O$-3$/ content causes a change in coordination from FeO$-6$/ to FeO$- 4$/.
机译:使用快速淬火技术制备具有不同氧化铁含量的磷酸锂玻璃,并测量它们的玻璃化转变温度(Tg),密度(d)和折射率(n)。 X射线光电子体光谱(XPS),红外光谱(IR)和母脂蛋白光谱已经用于研究玻璃和铁的氧化态的结构。这些结果表明,磷玻璃中存在Fe $ + 2 $ PLU $ /和FE $ + 3 $ PLU $ /离子,并且FE $ + 3 $ PLU $ /离子与四和六个氧气协调但是,Fe $ + 2 $ PLU $ /离子只有六个协调,物理和光学特性取决于FE $ + 2 $ PLU $ // FE比率和FE $ + 3 $ PLU $ /(4-COORATING / fe比率。 XPS光谱和莫斯堡效应测量表明,FE $ -2 $ /内容的增加导致FE $ + 2 $ // FE比率的减少,FE $ + 3增加$ PLU $ /(4协调)/ FE比率。红外测量表明,FE $ -2 $ / o $ -3 $ /内容的增加会导致从FEO $ -6 $ /到FEO $ - 4 $ /。

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