| 氧化钆对铁磷酸盐玻璃结构的影响 | |
| Influence of Gadolinium Oxide on Structure of Iron Phosphate Glasses | |
| 摘要: 为探究Gd2O3含量对40Fe2O3-60P2O5(mol%)基础玻璃结构的影响，采用传统熔融-冷却法制备xGd2O3-(100-x)(40Fe2O3-60P2O5)(0≤x≤12mol%)系列玻璃。利用XRD、SEM、FTIR和Raman等手段对玻璃结构进行表征，并测试了玻璃密度和维氏硬度。结果表明，在Gd2O3含量小于等于4mol%时，易形成均质玻璃，在此范围内，玻璃密度和硬度都随Gd2O3含量的增加而增加，玻璃结构以焦磷酸盐结构为主，并伴随少量的正磷酸盐和偏磷酸盐结构。在磷酸盐玻璃结构中，Gd3+作为网络修饰离子，位于玻璃网络结构间隙。 | |
| 关键词: 铁磷酸盐 氧化钆 玻璃结构 | |
| 基金项目: | |
| Abstract: The glass samples with composition xGd2O3-(100-x)(40Fe2O3-60P2O5) (0≤x≤12mol%) have been prepared by the conventional melt quench method. The structure of the studied glasses have been investigated using X-ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR) and Raman spectra. The compositions containing up to 4mol% of Gd2O3 formed glasses. Density and hardness of the studied glasses increase with addition Gd2O3 content. FTIR and Raman data suggest that the addition 4mol% Gd2O3 in the 40Fe2O3-60P2O5 (mol%) glass does not produce any fundamental change in structure of the phosphate network, which consists of predominantly pyrophosphate groups with a small proportion of metaphosphate and orthophosphate groups. From all these considerations we can conclude that Gd2O3 enters in the structure of studied glasses as a network modifier. | |
| Keywords: iron phosphate gadolinium oxide glass structure | |
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| 赖元明,梁晓峰,钱 斌,高 龙,杨世源,尹光福.氧化钆对铁磷酸盐玻璃结构的影响[J].无机化学学报,2012,28(4):721-726. | |
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