PDF from X-ray powder diffraction for nanometer-scale atomic structure analysis of quasicrystalline alloys

被引：19

作者：

Brühne, S

Uhrig, E

Luther, KD

Assmus, W

Brunelli, M

Masadeh, AS

Billinge, SJL

机构：

[1] Goethe Univ Frankfurt, Inst Phys, D-60438 Frankfurt, Germany

[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[3] Michigan State Univ, Dept Phys & Astron, Ctr Fundamental Mat Res, E Lansing, MI 48824 USA

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 2005年 / 220卷 / 11期

关键词：

icosahedral Mg-Zn based quasicrystal; local structure determination; pair distribution function; synchrotron radiation;

D O I：

10.1524/zkri.2005.220.11_2005.962

中图分类号：

O7 [晶体学];

学科分类号：

0702 [物理学]; 070205 [凝聚态物理]; 0703 [化学]; 080501 [材料物理与化学];

摘要：

For three icosahedral alloys in the Mg-Zn-RE (RE = Ho, Y) systems, the atomic pair distribution functions (PDFs) have been obtained from sealed X-ray tube (in-house) and synchrotron (ESRF and APS) powder diffraction experiments. The PDFs are at least qualitatively comparable and are suitable for least squares r approximate to 2 nm local structure refinements. A recent local model for si-Ho-Mg-Zn from in-house data can be confirmed using the synchrotron data. Acquisition and the quality of the data from the different sources are discussed. The better resolved synchrotron data open perspectives for larger scale and thus more detailed models.

引用

页码：962 / 967

页数：6

共 24 条

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THE CRYSTAL STRUCTURE OF THE METALLIC PHASE MG32 (A1,ZN) [J].