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Model-free reconstruction of magnetic correlations in frustrated magnets

Frustrated magnetic systems exhibit extraordinary physical properties, but quantification of their magnetic correlations poses a serious challenge to experiment and theory. Current insight into frustrated magnetic correlations relies on modelling techniques such as reverse Monte-Carlo methods, which...

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Detalles Bibliográficos
Autores principales: Roth, Nikolaj, May, Andrew F., Ye, Feng, Chakoumakos, Bryan C., Iversen, Bo Brummerstedt
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6038962/
https://www.ncbi.nlm.nih.gov/pubmed/30002842
http://dx.doi.org/10.1107/S2052252518006590
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author Roth, Nikolaj
May, Andrew F.
Ye, Feng
Chakoumakos, Bryan C.
Iversen, Bo Brummerstedt
author_facet Roth, Nikolaj
May, Andrew F.
Ye, Feng
Chakoumakos, Bryan C.
Iversen, Bo Brummerstedt
author_sort Roth, Nikolaj
collection PubMed
description Frustrated magnetic systems exhibit extraordinary physical properties, but quantification of their magnetic correlations poses a serious challenge to experiment and theory. Current insight into frustrated magnetic correlations relies on modelling techniques such as reverse Monte-Carlo methods, which require knowledge about the exact ordered atomic structure. Here, we present a method for direct reconstruction of magnetic correlations in frustrated magnets by three-dimensional difference pair distribution function analysis of neutron total scattering data. The methodology is applied to the disordered frustrated magnet bixbyite, (Mn(1−x)Fe(x))(2)O(3), which reveals nearest-neighbor antiferromagnetic correlations for the metal sites up to a range of approximately 15 Å. Importantly, this technique allows for magnetic correlations to be determined directly from the experimental data without any assumption about the atomic structure.
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spelling pubmed-60389622018-07-12 Model-free reconstruction of magnetic correlations in frustrated magnets Roth, Nikolaj May, Andrew F. Ye, Feng Chakoumakos, Bryan C. Iversen, Bo Brummerstedt IUCrJ Research Papers Frustrated magnetic systems exhibit extraordinary physical properties, but quantification of their magnetic correlations poses a serious challenge to experiment and theory. Current insight into frustrated magnetic correlations relies on modelling techniques such as reverse Monte-Carlo methods, which require knowledge about the exact ordered atomic structure. Here, we present a method for direct reconstruction of magnetic correlations in frustrated magnets by three-dimensional difference pair distribution function analysis of neutron total scattering data. The methodology is applied to the disordered frustrated magnet bixbyite, (Mn(1−x)Fe(x))(2)O(3), which reveals nearest-neighbor antiferromagnetic correlations for the metal sites up to a range of approximately 15 Å. Importantly, this technique allows for magnetic correlations to be determined directly from the experimental data without any assumption about the atomic structure. International Union of Crystallography 2018-06-01 /pmc/articles/PMC6038962/ /pubmed/30002842 http://dx.doi.org/10.1107/S2052252518006590 Text en © Nikolaj Roth et al. 2018 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/2.0/uk/
spellingShingle Research Papers
Roth, Nikolaj
May, Andrew F.
Ye, Feng
Chakoumakos, Bryan C.
Iversen, Bo Brummerstedt
Model-free reconstruction of magnetic correlations in frustrated magnets
title Model-free reconstruction of magnetic correlations in frustrated magnets
title_full Model-free reconstruction of magnetic correlations in frustrated magnets
title_fullStr Model-free reconstruction of magnetic correlations in frustrated magnets
title_full_unstemmed Model-free reconstruction of magnetic correlations in frustrated magnets
title_short Model-free reconstruction of magnetic correlations in frustrated magnets
title_sort model-free reconstruction of magnetic correlations in frustrated magnets
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6038962/
https://www.ncbi.nlm.nih.gov/pubmed/30002842
http://dx.doi.org/10.1107/S2052252518006590
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