Work

Identifying structural order in Selenium with Near-Edge Spectroscopy

Year: 2009

Type: preprint

Abstract: We investigate the crystallization of amorphous arsenic-selenium alloys with 0%, 0.5%, 2%, 6%, 10%, and 19% arsenic by atomic concentration using synchrotron X-ray absorption spectroscopy. We identify crystalline order using the extended X-ray absorption fine structure (EXAFS) spectra and correlate this order to changes in features of the X-ray absorption near edge structure (XANES) spectra. We find supporting evidence that the structure of amorphous selenium is composed of disordered helical chains, and is therefore closer to the trigonal crystalline phase than the monoclinic crystalline phase.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.0910.1051

Authors: McLeod, J. A., Chen, N., Johanson, R. E., Belev, G., Tonchev, D., Moewes, A., Kasap, S. O.

Language: English

Topic: X-ray Spectroscopy and Fluorescence Analysis

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1600631018

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