Academic Journal
Universal geometric frustration in pyrochlores
| العنوان: | Universal geometric frustration in pyrochlores |
|---|---|
| المؤلفون: | Trump, BA, Koohpayeh, SM, Livi, KJT, Wen, J-J, Arpino, KE, Ramasse, QM, Brydson, R, Feygenson, M, Takeda, H, Takigawa, M, Kimura, K, Nakatsuji, S, Broholm, CL, McQueen, TM |
| بيانات النشر: | Nature Publishing Group |
| سنة النشر: | 2018 |
| المجموعة: | White Rose Research Online (Universities of Leeds, Sheffield & York) |
| الوصف: | Materials with the pyrochlore/fluorite structure have diverse technological applications, from magnetism to nuclear waste disposal. Here we report the observation of structural instability present in the pyrochlores A₂Zr₂O₆Oʹ (A = Pr, La) and Yb₂Ti₂O₆Oʹ, that exists despite ideal stoichiometry, ideal cation-ordering, the absence of lone pair effects, and a lack of magnetic order. Though these materials appear to have good long-range order, local structure probes find displacements, of the order of 0.01 nm, within the pyrochlore framework. The pattern of displacements of the A₂Oʹ sublattice mimics the entropically-driven fluxional motions characteristic of and well-known in the silica mineral β-cristobalite. The universality of such displacements within the pyrochlore structure adds to the known structural diversity and explains the extreme sensitivity to composition found in quantum spin ices and the lack of ferroelectric behavior in pyrochlores. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text |
| اللغة: | English |
| Relation: | https://eprints.whiterose.ac.uk/133286/3/Universal%20geometric%20frustration%20in%20pyrochlores.pdf; Trump, BA, Koohpayeh, SM, Livi, KJT et al. (11 more authors) (2018) Universal geometric frustration in pyrochlores. Nature Communications, 9 (1). 2619. ISSN 2041-1723 |
| الاتاحة: | https://eprints.whiterose.ac.uk/133286/ https://eprints.whiterose.ac.uk/133286/3/Universal%20geometric%20frustration%20in%20pyrochlores.pdf |
| Rights: | cc_by_4 |
| رقم الانضمام: | edsbas.5349BC81 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |