| DOI | Trouver le DOI : https://doi.org/10.1088/1361-648X/abf594 |
|---|
| Auteur | Rechercher : Mauws, C.Identifiant ORCID : https://orcid.org/0000-0003-1826-6432; Rechercher : Hiebert, N.; Rechercher : Rutherford, M. L.; Rechercher : Zhou, H. D.; Rechercher : Huang, Q.; Rechercher : Stone, M. B.; Rechercher : Butch, N. P.; Rechercher : Su, Y.; Rechercher : Choi, E. S.; Rechercher : Yamani, Z.1; Rechercher : Wiebe, C. R.Identifiant ORCID : https://orcid.org/0000-0002-3681-0182 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
|
|---|
| Bailleur de fonds | Rechercher : Leverhulme Trust; Rechercher : Natural Sciences and Engineering Research Council of Canada; Rechercher : Canada Foundation for Innovation; Rechercher : Canadian Institutes of Health Research; Rechercher : Canadian Institute for Advanced Research; Rechercher : Canada Research Chairs; Rechercher : Division of Materials Research; Rechercher : Oak Ridge National Laboratory; Rechercher : National Research Council of Canada |
|---|
| Format | Texte, Article |
|---|
| Sujet | neutron scattering; frustrated magnetism; spin ice |
|---|
| Résumé | The question of structural disorder and its effects on magnetism is relevant to a number of spin liquid candidate materials. Although commonly thought of as a route to spin glass behaviour, here we describe a system in which the structural disorder results in long-range antiferromagnetic order due to local symmetry breaking. Nd₂ScNbO₇ is shown to have a dispersionless gapped excitation observed in other neodymium pyrochlores below Tₙ = 0.37 K through polarized and inelastic neutron scattering. However the dispersing spin waves are not observed. This excited mode is shown to occur in only 14(2)% of the neodymium ions through spectroscopy and is consistent with total scattering measurements as well as the magnitude of the dynamic moment 0.26(2) μB. The remaining magnetic species order completely into the all-in all-out Ising antiferromagnetic structure. This can be seen as a result of local symmetry breaking due disordered Sc⁺³ and Nb⁺⁵ ions about the A-site. From this work, it has been established that B-site disorder restores the dipole-like behaviour of the Nd⁺³ ions compared to the Nd₂B₂O₇ parent series. |
|---|
| Date de publication | 2021-05-14 |
|---|
| Maison d’édition | IOP |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 8483f7e9-b976-42df-8c63-bfe44af09639 |
|---|
| Enregistrement créé | 2023-01-23 |
|---|
| Enregistrement modifié | 2023-03-16 |
|---|
