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A Less Arbitrary Determination of Coordination Numbers in Disordered Systems

 

作者: R.L. McGreevy,   A. Baranyai,   I. Ruff,  

 

期刊: Physics and Chemistry of Liquids  (Taylor Available online 1986)
卷期: Volume 16, issue 1  

页码: 47-54

 

ISSN:0031-9104

 

年代: 1986

 

DOI:10.1080/00319108608078499

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The radial distribution functions,4πr2gij(r), of molten alkali halides, obtained by Monte Carlo simulations, have been deconvoluted into contributions from the first, second, third, etc. neighbours. These individual distribution functions indicate that in alkali halide melts the first coordination sphere of the ions contains an integral or half integral number of unlike charged ions. The shapes of the individual distribution functions show characteristic changes from first coordination shell neighbours to second shell ones and this can be utilised to make the selection of the boundary of the coordination sphere less arbitrary. Such a deconvolution reveals more of the structure in the case of the like charged ion distributions as well.

 

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