Assessing phase discrimination the segmentation of an elemental energy dispersive X-ray spectroscopy map: a case study of BiTe and BiTeS

The present case study critically assesses the efficacy of a previously proposed segmentation methodology as a means to discriminate phases via post-processing the image of an elemental map. In the Bi 2 Te 2.5 S 0.5 multiphase compound, the reference spectra of the Bi 2 Te 3 and Bi 2 Te 2 S phases a...

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Bibliographic Details
Published in:RSC advances 2018-02, Vol.8 (14), p.7457-7464
Main Authors: Byrnes, J. B, Gazder, A. A, Aminorroaya Yamini, S
Format: Article
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Summary:The present case study critically assesses the efficacy of a previously proposed segmentation methodology as a means to discriminate phases via post-processing the image of an elemental map. In the Bi 2 Te 2.5 S 0.5 multiphase compound, the reference spectra of the Bi 2 Te 3 and Bi 2 Te 2 S phases are distinct enough to effectively distinguish two phases during map acquisition. Since the counts of the sulphur-K peak in the X-ray emission data are significantly higher for Bi 2 Te 2 S compared to Bi 2 Te 3 , the segmentation methodology exploits this variation and enables successful phase discrimination via post-processing the image of the elemental map. The present case study critically assesses the efficacy of a previously proposed segmentation methodology as a means to discriminate phases via post-processing the image of an elemental map.
ISSN:2046-2069
DOI:10.1039/c7ra08594j