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Development of ReflEXAFS data analysis for deeper surface structure studies

López-Flores, Víctor, Ansell, Stuart, Ramos, Silvia, Bowron, Daniel T, Díaz-Moreno, Sofia, Muñoz-Páez, Adela (2009) Development of ReflEXAFS data analysis for deeper surface structure studies. Journal of Physics: Conference Series, 190 (1). 012110. ISSN 1742-6588. E-ISSN 1742-6596. (doi:10.1088/1742-6596/190/1/012110) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
https://doi.org/10.1088/1742-6596/190/1/012110

Abstract

An analytical approach to the analysis of ReflEXAFS data collected from complex multilayer samples, at a range of angles above and below the critical angle is presented. The aim of the technique is to generate a structural model of the investigated system that is consistent with the variable depth sensitivity of the experimental data. The procedure follows three main steps (i) the determination of the free atom reflectivity background for the multilayer system, (ii) the estimation of the depth dependent EXAFS signals and (iii) the calculation of the corresponding ReflEXAFS components. By iterating between steps (ii) and (iii), and varying the estimates of the EXAFS signals, a consistent set of structural parameters is extracted that reflects the bulk structure of the multilayer system through the basic reflectivity signals, and the depth dependent local atomic structure through the estimated EXAFS components. An example of the depth dependent structure of copper in a copper-chromium multilayer stack is presented to illustrate the capabilities of the method.

Item Type: Article
DOI/Identification number: 10.1088/1742-6596/190/1/012110
Uncontrolled keywords: Physics of Quantum Materials
Subjects: Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Silvia Ramos
Date Deposited: 05 Dec 2017 14:12 UTC
Last Modified: 17 Jul 2019 09:54 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/65004 (The current URI for this page, for reference purposes)
Ramos, Silvia: https://orcid.org/0000-0003-2725-7706
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