Distinguishing medium-range order in metallic glasses using fluctuation electron microscopy: A theoretical study using atomic models

J. Wen; Y. Q. Cheng; J. Q. Wang; E. Ma

doi:10.1063/1.3079514

Distinguishing medium-range order in metallic glasses using fluctuation electron microscopy: A theoretical study using atomic models

J. Wen, Y. Q. Cheng, J. Q. Wang, E. Ma

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18 Scopus citations

Abstract

We have simulated the variance in the diffracted electron intensity as a function of scattering vector in fluctuation electron microscopy for a range of fully amorphous and nanocrystal-containing metallic glass models. Variance peaks are obvious for glasses that contain well-developed short-to-medium range order but absent for their parent liquids. The variance peaks are very sensitive to the presence and especially the size of the nanocrystal embryos or nuclei embedded in the glass matrix but much less so to the variations in the type or degree of the cluster ordering developed in fully amorphous materials.

Original language	English
Article number	043519
Journal	Journal of Applied Physics
Volume	105
Issue number	4
DOIs	https://doi.org/10.1063/1.3079514
State	Published - 2009
Externally published	Yes

Funding

The authors thank Professor H. W. Sheng for assistance in modeling. We are also indebted to Dr. K. Du for fruitful discussions on TEM image simulation. This work was supported by the National Key Basic Research Program of China (Grant No. 2007CB613906). The authors were part of the MANS research team, supported in part by the Chinese Academy of Sciences.

Funders	Funder number
National Key Research and Development Program of China	2007CB613906

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Distinguishing medium-range order in metallic glasses using fluctuation electron microscopy: A theoretical study using atomic models

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