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  Magnetic ground state of the Ising-like antiferromagnet DyScO3

Wu, L. S., Nikitin, S. E., Frontzek, M., Kolesnikov, A. I., Ehlers, G., Lumsden, M. D., et al. (2017). Magnetic ground state of the Ising-like antiferromagnet DyScO3. Physical Review B, 96(14): 144407, pp. 1-9. doi:10.1103/PhysRevB.96.144407.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-1248-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-D385-8
Genre: Journal Article

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 Creators:
Wu, L. S.1, Author
Nikitin, S. E.2, Author              
Frontzek, M.1, Author
Kolesnikov, A. I.1, Author
Ehlers, G.1, Author
Lumsden, M. D.1, Author
Shaykhutdinov, K. A.1, Author
Guo, E.-J.1, Author
Savici, A. T.1, Author
Gai, Z.1, Author
Sefat, A. S.1, Author
Podlesnyak, A.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: We report on the low-temperature magnetic properties of the DyScO3 perovskite, which were characterized by means of single crystal and powder neutron scattering, and by magnetization measurements. Below T-N = 3.15 K, Dy3+ moments form an antiferromagnetic structure with an easy axis of magnetization lying in the ab plane. The magnetic moments are inclined at an angle of similar to +/- 28 degrees to the b axis. We show that the ground-state Kramers doublet of Dy3+ is made up of primarily |+/- 15/2 > eigenvectors and well separated by a crystal field from the first excited state at E-1 = 24.9 meV. This leads to an extreme Ising single-ion anisotropy, M-perpendicular to/M-parallel to similar to 0.05. The transverse magnetic fluctuations, which are proportional to M-perpendicular to(2)/M-parallel to(2), are suppressed, and only moment fluctuations along the local Ising direction are allowed. We also found that the Dy-Dy dipolar interactions along the crystallographic c axis are two to four times larger than in-plane interactions.

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Language(s): eng - English
 Dates: 2017-10-052017-10-05
 Publication Status: Published in print
 Pages: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 96 (14) Sequence Number: 144407 Start / End Page: 1 - 9 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008