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sxy5306

铁杆木虫 (著名写手)

[交流] 【求助】晶体结构翻译!

应急——晶体结构翻译!

SrLn2O4 (Ln = Gd, Dy–Yb) :
These compounds have a crystal structure with a triangle-based array of Ln ions: the honeycomb-like structure formed by zigzag chains consisting of edge-shared Ln3 triangles.It is reported that the rare earth occupies
the two point sites allowed in the structure (Cs symmetry),
with the trivalent europium as local probe.

The AR2O4 crystals are isostructural to CaFe2O4, which belongs
to an orthogonal structurewith space groupPnmaand contains four
formula units for a total of 28 atoms. All of the constituent atoms
occupy 4c sites according to the Wyckoff notation. The orthogonal
structure is constructed by a R2O4-framework of double octahedral
and A-atoms residing within the framework with the bicapped
trigonal prismatic site. The A-atoms coordinated by eight oxygen
atoms, the rare earth atoms R occupy two different kind of symmetry
sites, each coordinated by six oxygen atoms, and the oxygen
atoms are fivefold coordinated. Fig. 1 shows the structure of SrY2O4.
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cluster8676

至尊木虫 (著名写手)

sxy5306(金币+5):谢谢,还有不同意见的翻译结果吗! 2010-11-02 14:13:38
sxy5306(金币+5):翻译的不错 再次谢谢! 2010-11-02 17:57:14
这些化合物有一个三角形的稀土离子的晶体阵列结构:边共享的稀土离子三角形组成的的锯齿链形成蜂窝状结构。据报道,稀土占据了允许的两个位置(Cs对称性)三价铕作为位置探针。
AR2O4和CaFe2O4 晶体是同构体,属于正交晶系,空间群是Pnma,共四个单元结构,包含28个原子。根据怀科夫符号,所有的组成原子占据4c位置。正交结构是由一个双八面体和A-原子在双帽三角棱柱中间所组成的R2O4 结构。A原子由八个氧原子配位,稀土原子R占据两种对称的站点,每个稀土金属由6个氧原子配位,而氧原子五配位的。图1显示了SrY2O4的结构。
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