中子衍射
表征(材料科学)
镧系元素
X射线晶体学
材料科学
X射线
结晶学
化学
衍射
核化学
晶体结构
物理
离子
核物理学
纳米技术
光学
有机化学
作者
Antonio J. Salinas,J. L. García–Muñoz,J. Rodrı́guez-Carvajal,R. Sáez-Puche,J. L. Martı́nez
标识
DOI:10.1016/0022-4596(92)90094-c
摘要
R2BaCuO5 compounds with R = rare earth atom from Sm to Lu have been studied by neutron and X-ray powder diffraction. All of them are isostructural, and belong to the space group Pnma (Z = 4). A comparative study of the influence of the rare earth size on the structural parameters is presented. The stability of the structure is estimated from the agreement between valence bond sums and formal valence states. A systematic variation of the structural stability is found depending on the size of the rare earth atom.
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