【摘要】 用扩展 X 射线吸收精细结构谱方法研究了四种 ZrF₄基多元系玻璃中 Zr 近邻的 F 分布状态。这些玻璃的组份比较接近。研究表明,材料中玻璃网络形成体 Zr 近邻的分布,随调制体的一些变化表现出相当大的变化。根据确定的近邻结构参数,对照二元系2ZrF₄·BaF₂玻璃的一种结构模型,指出了 ZrF₄基多元氟化物玻璃的结构特点。并讨论了不同调制体组元对该类材料 Zr 近邻结构变化的作用。更多还原

【Abstract】 The nearest neighboring F distribution around Zr in four differentmulticomponent fluorozirconate glasses is studied by EXAFS.The compositions of theseglasses are similar to each other,except partial substitution or addition.However,it is shownthat there are some rather differences in the nearest neighboring F distribution around Zr inthe studied glasses.Based on the obtained structural parameters and a having been sug-gested structural model for 2ZrF₄·BaF₂ glass,the structural characteres of studiedmulticomponent fluorozirconate glasses are presented.The effects of various modifier ele-ments on the nearest neighboring structures around Zr in these glasses are discussed.更多还原