Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Structural Study of Zr50Cu50 Amorphous Alloy by Anomalous X-ray Scattering Coupled with Reverse Monte-Carlo Simulation
T. KawamataY. YokoyamaM. SaitoK. SugiyamaY. Waseda
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2010 Volume 51 Issue 10 Pages 1796-1801


Anomalous X-ray scattering (AXS) analysis was applied for the structural analysis of a rapidly quenched Zr50Cu50 amorphous alloy. The present AXS analysis provided the environmental structural information round Cu and Zr, and the subsequent reverse Monte Carlo (RMC) simulation allowed us to obtain three partial pair distribution functions together with a three-dimensional structural model. The Voronoi polyhedral analysis of the nearest-neighbor region confirms that the structural features are similar to those of the dense random packing of hard spheres (DRPHS) model. The chemical oscillatory structure composed of alternating Cu-rich and Zr-rich coordination shells was realized in the middle range, up to 0.8 nm. The shell structure is suggested to be one of the fundamental structural features of medium-range ordering in the Zr50Cu50 amorphous alloy.

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© 2010 The Japan Institute of Metals and Materials
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