Magnetism on the stretched diamond lattice in lanthanide orthotantalates
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Journal Title
Physical Review Materials
ISSN
2475-9953
Publisher
American Physical Society
Type
Article
This Version
AM
Metadata
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Kelly, N., Yuan, L., Pearson, R., Suard, E., Puente Orench, I., & Dutton, S. Magnetism on the stretched diamond lattice in lanthanide orthotantalates. Physical Review Materials https://doi.org/10.17863/CAM.83328
Abstract
The magnetic Ln3+ ions in the fergusonite and scheelite crystal structures form a distorted or stretched diamond lattice which is predicted to host exotic magnetic ground states. In this study, polycrystalline samples of the fergusonite orthotantalates M-LnTaO4 (Ln = Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er) are synthesized and then characterized using powder diffraction and bulk magnetometry and heat capacity. TbTaO4 orders antiferromagnetically at 2.25 K into a commensurate magnetic cell with k = 0, magnetic space group 14.77 (P2_1'/c) and Tb moments parallel to the a-axis. No magnetic order was observed in the other materials studied, leaving open the possibility of exotic magnetic states at T < 2 K.
Sponsorship
EPSRC (2124516)
Embargo Lift Date
2025-04-07
Identifiers
This record's DOI: https://doi.org/10.17863/CAM.83328
This record's URL: https://www.repository.cam.ac.uk/handle/1810/335894
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