Drewitt James W E, Salmon Philip S, Zeidler Anita, Benmore Chris J, Hannon Alex C
Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom. School of Earth Sciences, University of Bristol, Wills Memorial Building, Queen's Road, Bristol, BS8 1RJ, United Kingdom.
J Phys Condens Matter. 2017 Jun 7;29(22):225703. doi: 10.1088/1361-648X/aa68c0. Epub 2017 Apr 28.
The method of neutron diffraction with isomorphic substitution was used to measure the structure of the rare-earth chalcogenide glasses [Formula: see text](Ga X )(GeX ) with [Formula: see text] or Ce and [Formula: see text] or Se. X-ray diffraction was also used to measure the structure of the sulphide glass. The results are consistent with networks that are built from GeX and GaX tetrahedra, and give R-S and R-Se coordination numbers of 8.0(2) and 8.5(4), respectively. The minimum nearest-neighbour R-R distance associated with rare-earth clustering is discussed.
采用同构替代中子衍射法测量了稀土硫族化物玻璃化学式：见原文(GeX)（其中X为S或Se，或Ce且X为S或Se）的结构。还使用X射线衍射法测量了硫化物玻璃的结构。结果与由GeX和GaX四面体构成的网络一致，且R-S和R-Se的配位数分别为8.0(2)和8.5(4)。讨论了与稀土聚集相关的最小最近邻R-R距离。
