Comparison of short-range order in irradiated dysprosium titanates

Abstract The structural response of Dy2TiO5 oxide under swift heavy ion irradiation (2.2 GeV Au ions) was studied over a range of structural length scales utilizing neutron total scattering experiments. Refinement of diffraction data confirms that the long-range orthorhombic structure is susceptible...

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Autores principales:	Roman Sherrod, Eric C. O’Quinn, Igor M. Gussev, Cale Overstreet, Joerg Neuefeind, Maik K. Lang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/ca09d69b95424cc7b7bbbdde34b9a751
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spelling	oai:doaj.org-article:ca09d69b95424cc7b7bbbdde34b9a7512021-12-02T18:03:46ZComparison of short-range order in irradiated dysprosium titanates10.1038/s41529-021-00165-62397-2106https://doaj.org/article/ca09d69b95424cc7b7bbbdde34b9a7512021-04-01T00:00:00Zhttps://doi.org/10.1038/s41529-021-00165-6https://doaj.org/toc/2397-2106Abstract The structural response of Dy2TiO5 oxide under swift heavy ion irradiation (2.2 GeV Au ions) was studied over a range of structural length scales utilizing neutron total scattering experiments. Refinement of diffraction data confirms that the long-range orthorhombic structure is susceptible to ion beam-induced amorphization with limited crystalline fraction remaining after irradiation to 8 × 1012 ions/cm2. In contrast, the local atomic arrangement, examined through pair distribution function analysis, shows only subtle changes after irradiation and is still described best by the original orthorhombic structural model. A comparison to Dy2Ti2O7 pyrochlore oxide under the same irradiation conditions reveals a different behavior: while the dysprosium titanate pyrochlore is more radiation resistant over the long-range with smaller degree of amorphization as compared to Dy2TiO5, the former involves more local atomic rearrangements, best described by a pyrochlore-to-weberite-type transformation. These results highlight the importance of short-range and medium-range order analysis for a comprehensive description of radiation behavior.Roman SherrodEric C. O’QuinnIgor M. GussevCale OverstreetJoerg NeuefeindMaik K. LangNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENnpj Materials Degradation, Vol 5, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Roman Sherrod Eric C. O’Quinn Igor M. Gussev Cale Overstreet Joerg Neuefeind Maik K. Lang Comparison of short-range order in irradiated dysprosium titanates
description	Abstract The structural response of Dy2TiO5 oxide under swift heavy ion irradiation (2.2 GeV Au ions) was studied over a range of structural length scales utilizing neutron total scattering experiments. Refinement of diffraction data confirms that the long-range orthorhombic structure is susceptible to ion beam-induced amorphization with limited crystalline fraction remaining after irradiation to 8 × 1012 ions/cm2. In contrast, the local atomic arrangement, examined through pair distribution function analysis, shows only subtle changes after irradiation and is still described best by the original orthorhombic structural model. A comparison to Dy2Ti2O7 pyrochlore oxide under the same irradiation conditions reveals a different behavior: while the dysprosium titanate pyrochlore is more radiation resistant over the long-range with smaller degree of amorphization as compared to Dy2TiO5, the former involves more local atomic rearrangements, best described by a pyrochlore-to-weberite-type transformation. These results highlight the importance of short-range and medium-range order analysis for a comprehensive description of radiation behavior.
format	article
author	Roman Sherrod Eric C. O’Quinn Igor M. Gussev Cale Overstreet Joerg Neuefeind Maik K. Lang
author_facet	Roman Sherrod Eric C. O’Quinn Igor M. Gussev Cale Overstreet Joerg Neuefeind Maik K. Lang
author_sort	Roman Sherrod
title	Comparison of short-range order in irradiated dysprosium titanates
title_short	Comparison of short-range order in irradiated dysprosium titanates
title_full	Comparison of short-range order in irradiated dysprosium titanates
title_fullStr	Comparison of short-range order in irradiated dysprosium titanates
title_full_unstemmed	Comparison of short-range order in irradiated dysprosium titanates
title_sort	comparison of short-range order in irradiated dysprosium titanates
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ca09d69b95424cc7b7bbbdde34b9a751
work_keys_str_mv	AT romansherrod comparisonofshortrangeorderinirradiateddysprosiumtitanates AT ericcoquinn comparisonofshortrangeorderinirradiateddysprosiumtitanates AT igormgussev comparisonofshortrangeorderinirradiateddysprosiumtitanates AT caleoverstreet comparisonofshortrangeorderinirradiateddysprosiumtitanates AT joergneuefeind comparisonofshortrangeorderinirradiateddysprosiumtitanates AT maikklang comparisonofshortrangeorderinirradiateddysprosiumtitanates
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Comparison of short-range order in irradiated dysprosium titanates

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