Intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography

Abstract Intuitively scientists accept that order can emerge from disorder and a significant amount of effort has been devoted over many years to demonstrate this. In metallic alloys and oxides, disorder at the atomic scale is the result of occupation at equivalent atomic positions by different atom...

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Autores principales:	David Simeone, Gordon James Thorogood, Da Huo, Laurence Luneville, Gianguido Baldinozzi, Vaclav Petricek, Florence Porcher, Joel Ribis, Leo Mazerolles, Ludovic Largeau, Jean Francois Berar, Suzy Surble
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/815a03b5eab64288b5ca4ad9d2baee26
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spelling	oai:doaj.org-article:815a03b5eab64288b5ca4ad9d2baee262021-12-02T11:53:05ZIntricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography10.1038/s41598-017-02787-w2045-2322https://doaj.org/article/815a03b5eab64288b5ca4ad9d2baee262017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02787-whttps://doaj.org/toc/2045-2322Abstract Intuitively scientists accept that order can emerge from disorder and a significant amount of effort has been devoted over many years to demonstrate this. In metallic alloys and oxides, disorder at the atomic scale is the result of occupation at equivalent atomic positions by different atoms which leads to the material exhibiting a fully random or modulated scattering pattern. This arrangement has a substantial influence on the material’s properties, for example ionic conductivity. However it is generally accepted that oxides, such as defect fluorite as used for nuclear waste immobilization matrices and fuel cells, are the result of disorder at the atomic scale. To investigate how order at the atomic scale induces disorder at a larger scale length, we have applied different techniques to study the atomic composition of a homogeneous La 2 Zr 2 O 7 pyrochlore, a textbook example of such a structure. Here we demonstrate that a pyrochlore, which is considered to be defect fluorite, is the result of intricate disorder due to a random distribution of fully ordered nano-domains. Our investigation provides new insight into the order disorder transformations in complex materials with regards to domain formation, resulting in a concord of chemistry with crystallography illustrating that order can induce disorder.David SimeoneGordon James ThorogoodDa HuoLaurence LunevilleGianguido BaldinozziVaclav PetricekFlorence PorcherJoel RibisLeo MazerollesLudovic LargeauJean Francois BerarSuzy SurbleNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q David Simeone Gordon James Thorogood Da Huo Laurence Luneville Gianguido Baldinozzi Vaclav Petricek Florence Porcher Joel Ribis Leo Mazerolles Ludovic Largeau Jean Francois Berar Suzy Surble Intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography
description	Abstract Intuitively scientists accept that order can emerge from disorder and a significant amount of effort has been devoted over many years to demonstrate this. In metallic alloys and oxides, disorder at the atomic scale is the result of occupation at equivalent atomic positions by different atoms which leads to the material exhibiting a fully random or modulated scattering pattern. This arrangement has a substantial influence on the material’s properties, for example ionic conductivity. However it is generally accepted that oxides, such as defect fluorite as used for nuclear waste immobilization matrices and fuel cells, are the result of disorder at the atomic scale. To investigate how order at the atomic scale induces disorder at a larger scale length, we have applied different techniques to study the atomic composition of a homogeneous La 2 Zr 2 O 7 pyrochlore, a textbook example of such a structure. Here we demonstrate that a pyrochlore, which is considered to be defect fluorite, is the result of intricate disorder due to a random distribution of fully ordered nano-domains. Our investigation provides new insight into the order disorder transformations in complex materials with regards to domain formation, resulting in a concord of chemistry with crystallography illustrating that order can induce disorder.
format	article
author	David Simeone Gordon James Thorogood Da Huo Laurence Luneville Gianguido Baldinozzi Vaclav Petricek Florence Porcher Joel Ribis Leo Mazerolles Ludovic Largeau Jean Francois Berar Suzy Surble
author_facet	David Simeone Gordon James Thorogood Da Huo Laurence Luneville Gianguido Baldinozzi Vaclav Petricek Florence Porcher Joel Ribis Leo Mazerolles Ludovic Largeau Jean Francois Berar Suzy Surble
author_sort	David Simeone
title	Intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography
title_short	Intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography
title_full	Intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography
title_fullStr	Intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography
title_full_unstemmed	Intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography
title_sort	intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/815a03b5eab64288b5ca4ad9d2baee26
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Intricate disorder in defect fluorite/pyrochlore: a concord of chemistry and crystallography

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