| Autre titre | Neutron diffraction and 119Sn Mössbauer study of Sm3Ag4Sn4 |
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| DOI | Trouver le DOI : https://doi.org/10.1088/0953-8984/19/43/436205 |
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| Auteur | Rechercher : Voyer, C. J.; Rechercher : Ryan, D. H.; Rechercher : Cadogan, J. M.; Rechercher : Cranswick, L. M. D.1; Rechercher : Napoletano, M.; Rechercher : Riani, P.; Rechercher : Canepa, F. |
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| Affiliation | - Conseil national de recherches du Canada. Centre canadien de faisceaux de neutrons du CNRC
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| Format | Texte, Article |
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| Résumé | The magnetic properties of Sm₃Ag₄Sn₄ have been investigated using bulk magnetization, ¹¹⁹Sn Mössbauer spectroscopy and neutron diffraction. We find that the Néel temperature (TN) is 26.0(5) K, well above the value of [?]9 K previously determined using magnetic susceptibility measurements. Neutron diffraction data indicate that the Sm moments most likely adopt either the IPmm'm or IPmmm' magnetic space groups, neither of which allows order at the 2d site, in marked contrast to the vast majority of other compounds in the R₃T₄X₄ family. Transferred hyperfine field models suggest that the IPmmm' is the only group that is consistent with the ¹¹⁹Sn Mössbauer results. We derive a samarium moment of 0.47 ± 0.10 mB on the Sm 4e site at 3 K. ¹¹⁹Sn Mössbauer spectroscopy shows that the system undergoes a spin reorientation transition at 8.3(3) K, where the moments rotate towards the a-axis. |
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| Date de publication | 2007-09-26 |
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| Maison d’édition | IOP |
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| Dans | |
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| Numéro NPARC | 12327943 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 980721ea-c3e1-49be-acf3-ba2c9ebad79d |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2020-05-10 |
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