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2D crystal structure and anisotropic magnetism of GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54)

Exploration of the gold-rich part of the ternary Gd–Au–Al system afforded the intermetallic compound GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54) which was structurally characterized by single crystal X-ray diffraction (Pnma, a = 18.7847(4) Å, b = 23.8208(5) Å, c = 5.3010(1) Å). GdAu(6.75−x)Al(0.5+x) crystalliz...

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Autores principales: Joshi, D. C., Gebresenbut, G. H., Fischer, A., Rydh, A., Häussermann, U., Nordblad, P., Mathieu, R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9338926/
https://www.ncbi.nlm.nih.gov/pubmed/35907933
http://dx.doi.org/10.1038/s41598-022-17068-4
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author Joshi, D. C.
Gebresenbut, G. H.
Fischer, A.
Rydh, A.
Häussermann, U.
Nordblad, P.
Mathieu, R.
author_facet Joshi, D. C.
Gebresenbut, G. H.
Fischer, A.
Rydh, A.
Häussermann, U.
Nordblad, P.
Mathieu, R.
author_sort Joshi, D. C.
collection PubMed
description Exploration of the gold-rich part of the ternary Gd–Au–Al system afforded the intermetallic compound GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54) which was structurally characterized by single crystal X-ray diffraction (Pnma, a = 18.7847(4) Å, b = 23.8208(5) Å, c = 5.3010(1) Å). GdAu(6.75−x)Al(0.5+x) crystallizes in a previously unknown structure type featuring layers of Gd(2)(Au, Al)(29) and Gd(2)(Au, Al)(28) clusters which are arranged as in a close-packing parallel to the ac plane. The Gd substructure corresponds to slightly corrugated 3(6) nets (d(Gd–Gd) = 5.30–5.41 Å) which are stacked on top of each other along the b direction with alternating short (5.4, 5.6 Å, within layers) and long distances (6.4 Å, between layers). The title compound has been discussed with respect to a quasicrystal approximant (1/1 AC) GdAu(5.3)Al in the same system. The magnetic properties of GdAu(6.75−x)Al(0.5+x) were found to be reminiscent to those of some ternary ACs, with sharp peaks in the temperature dependent magnetization, and metamagnetic-like transitions. The material becomes antiferromagnetic below 25 K; magnetometry results suggest that the antiferromagnetic state is composed of ferromagnetic ac planes, coupled antiferromagnetically along the b direction.
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spelling pubmed-93389262022-08-01 2D crystal structure and anisotropic magnetism of GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54) Joshi, D. C. Gebresenbut, G. H. Fischer, A. Rydh, A. Häussermann, U. Nordblad, P. Mathieu, R. Sci Rep Article Exploration of the gold-rich part of the ternary Gd–Au–Al system afforded the intermetallic compound GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54) which was structurally characterized by single crystal X-ray diffraction (Pnma, a = 18.7847(4) Å, b = 23.8208(5) Å, c = 5.3010(1) Å). GdAu(6.75−x)Al(0.5+x) crystallizes in a previously unknown structure type featuring layers of Gd(2)(Au, Al)(29) and Gd(2)(Au, Al)(28) clusters which are arranged as in a close-packing parallel to the ac plane. The Gd substructure corresponds to slightly corrugated 3(6) nets (d(Gd–Gd) = 5.30–5.41 Å) which are stacked on top of each other along the b direction with alternating short (5.4, 5.6 Å, within layers) and long distances (6.4 Å, between layers). The title compound has been discussed with respect to a quasicrystal approximant (1/1 AC) GdAu(5.3)Al in the same system. The magnetic properties of GdAu(6.75−x)Al(0.5+x) were found to be reminiscent to those of some ternary ACs, with sharp peaks in the temperature dependent magnetization, and metamagnetic-like transitions. The material becomes antiferromagnetic below 25 K; magnetometry results suggest that the antiferromagnetic state is composed of ferromagnetic ac planes, coupled antiferromagnetically along the b direction. Nature Publishing Group UK 2022-07-30 /pmc/articles/PMC9338926/ /pubmed/35907933 http://dx.doi.org/10.1038/s41598-022-17068-4 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Joshi, D. C.
Gebresenbut, G. H.
Fischer, A.
Rydh, A.
Häussermann, U.
Nordblad, P.
Mathieu, R.
2D crystal structure and anisotropic magnetism of GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54)
title 2D crystal structure and anisotropic magnetism of GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54)
title_full 2D crystal structure and anisotropic magnetism of GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54)
title_fullStr 2D crystal structure and anisotropic magnetism of GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54)
title_full_unstemmed 2D crystal structure and anisotropic magnetism of GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54)
title_short 2D crystal structure and anisotropic magnetism of GdAu(6.75−x)Al(0.5+x) (x ≈ 0.54)
title_sort 2d crystal structure and anisotropic magnetism of gdau(6.75−x)al(0.5+x) (x ≈ 0.54)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9338926/
https://www.ncbi.nlm.nih.gov/pubmed/35907933
http://dx.doi.org/10.1038/s41598-022-17068-4
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