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Demonstration of thin film pair distribution function analysis (tfPDF) for the study of local structure in amorphous and crystalline thin films
By means of normal-incidence, high-flux and high-energy X-rays, total scattering data for pair distribution function (PDF) analysis have been obtained from thin films (tf), suitable for local structure analysis. By using amorphous substrates as support for the films, the standard Rapid Acquisition P...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4547816/ https://www.ncbi.nlm.nih.gov/pubmed/26306190 http://dx.doi.org/10.1107/S2052252515012221 |
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author | Jensen, Kirsten M. Ø. Blichfeld, Anders B. Bauers, Sage R. Wood, Suzannah R. Dooryhée, Eric Johnson, David C. Iversen, Bo B. Billinge, Simon J. L. |
author_facet | Jensen, Kirsten M. Ø. Blichfeld, Anders B. Bauers, Sage R. Wood, Suzannah R. Dooryhée, Eric Johnson, David C. Iversen, Bo B. Billinge, Simon J. L. |
author_sort | Jensen, Kirsten M. Ø. |
collection | PubMed |
description | By means of normal-incidence, high-flux and high-energy X-rays, total scattering data for pair distribution function (PDF) analysis have been obtained from thin films (tf), suitable for local structure analysis. By using amorphous substrates as support for the films, the standard Rapid Acquisition PDF setup can be applied and the scattering signal from the film can be isolated from the total scattering data through subtraction of an independently measured background signal. No angular corrections to the data are needed, as would be the case for grazing incidence measurements. The ‘tfPDF’ method is illustrated through studies of as-deposited (i.e. amorphous) and crystalline FeSb(3) films, where the local structure analysis gives insight into the stabilization of the metastable skutterudite FeSb(3) phase. The films were prepared by depositing ultra-thin alternating layers of Fe and Sb, which interdiffuse and after annealing crystallize to form the FeSb(3) structure. The tfPDF data show that the amorphous precursor phase consists of corner-sharing FeSb(6) octahedra with motifs highly resembling the local structure in crystalline FeSb(3). Analysis of the amorphous structure allows the prediction of whether the final crystalline product will form the FeSb(3) phase with or without excess Sb present. The study thus illustrates how analysis of the local structure in amorphous precursor films can help to understand crystallization processes of metastable phases and opens for a range of new local structure studies of thin films. |
format | Online Article Text |
id | pubmed-4547816 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-45478162015-08-24 Demonstration of thin film pair distribution function analysis (tfPDF) for the study of local structure in amorphous and crystalline thin films Jensen, Kirsten M. Ø. Blichfeld, Anders B. Bauers, Sage R. Wood, Suzannah R. Dooryhée, Eric Johnson, David C. Iversen, Bo B. Billinge, Simon J. L. IUCrJ Research Papers By means of normal-incidence, high-flux and high-energy X-rays, total scattering data for pair distribution function (PDF) analysis have been obtained from thin films (tf), suitable for local structure analysis. By using amorphous substrates as support for the films, the standard Rapid Acquisition PDF setup can be applied and the scattering signal from the film can be isolated from the total scattering data through subtraction of an independently measured background signal. No angular corrections to the data are needed, as would be the case for grazing incidence measurements. The ‘tfPDF’ method is illustrated through studies of as-deposited (i.e. amorphous) and crystalline FeSb(3) films, where the local structure analysis gives insight into the stabilization of the metastable skutterudite FeSb(3) phase. The films were prepared by depositing ultra-thin alternating layers of Fe and Sb, which interdiffuse and after annealing crystallize to form the FeSb(3) structure. The tfPDF data show that the amorphous precursor phase consists of corner-sharing FeSb(6) octahedra with motifs highly resembling the local structure in crystalline FeSb(3). Analysis of the amorphous structure allows the prediction of whether the final crystalline product will form the FeSb(3) phase with or without excess Sb present. The study thus illustrates how analysis of the local structure in amorphous precursor films can help to understand crystallization processes of metastable phases and opens for a range of new local structure studies of thin films. International Union of Crystallography 2015-07-05 /pmc/articles/PMC4547816/ /pubmed/26306190 http://dx.doi.org/10.1107/S2052252515012221 Text en © Kirsten M. Ø. Jensen et al. 2015 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. |
spellingShingle | Research Papers Jensen, Kirsten M. Ø. Blichfeld, Anders B. Bauers, Sage R. Wood, Suzannah R. Dooryhée, Eric Johnson, David C. Iversen, Bo B. Billinge, Simon J. L. Demonstration of thin film pair distribution function analysis (tfPDF) for the study of local structure in amorphous and crystalline thin films |
title | Demonstration of thin film pair distribution function analysis (tfPDF) for the study of local structure in amorphous and crystalline thin films |
title_full | Demonstration of thin film pair distribution function analysis (tfPDF) for the study of local structure in amorphous and crystalline thin films |
title_fullStr | Demonstration of thin film pair distribution function analysis (tfPDF) for the study of local structure in amorphous and crystalline thin films |
title_full_unstemmed | Demonstration of thin film pair distribution function analysis (tfPDF) for the study of local structure in amorphous and crystalline thin films |
title_short | Demonstration of thin film pair distribution function analysis (tfPDF) for the study of local structure in amorphous and crystalline thin films |
title_sort | demonstration of thin film pair distribution function analysis (tfpdf) for the study of local structure in amorphous and crystalline thin films |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4547816/ https://www.ncbi.nlm.nih.gov/pubmed/26306190 http://dx.doi.org/10.1107/S2052252515012221 |
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