Identification of the relative distribution of rare-earth ions in phosphate glasses.
Identification of the relative distribution of rare-earth ions in phosphate glasses.
复制标题
磷酸盐玻璃中稀土离子相对分布的鉴定。
DOI：
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发表时间：
2003
影响因子：
8.6
通讯作者：
G. Cuello
中科院分区：
文献类型：
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作者：
Richard A. Martin;P. Salmon;H. Fischer;G. Cuello
采用中子衍射同象取代法测定了磷酸盐玻璃RAl(0.30)P(3.05)O(9.62)中稀土离子R3+(Dy3+或Ho3+)的相对分布。结果发现，7.9(7) R-R 最近邻居位于由互连 PO4 四面体构成的网络中的 5.62(6) A 处。如果明确考虑 Al 的作用，则可以对局部基质原子相关性进行自洽说明，其中每个磷有 1.68(9) 个桥接和 2.32(9) 个末端氧原子。
The relative distribution of rare-earth ions R3+ (Dy3+ or Ho3+) in the phosphate glass RAl(0.30)P(3.05)O(9.62) was measured by employing the method of isomorphic substitution in neutron diffraction. It is found that 7.9(7) R-R nearest neighbors reside at 5.62(6) A in a network made from interlinked PO4 tetrahedra. Provided that the role of Al is explicitly considered, a self-consistent account of the local matrix atom correlations can be developed in which there are 1.68(9) bridging and 2.32(9) terminal oxygen atoms per phosphorus.