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Magnetic structures of geometrically frustrated SrGd2O4 derived from powder and single-crystal neutron diffraction
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Qureshi, N., Malkin, B. Z., Riberolles, S. X. M., Ritter, C., Ouladdiaf, B., Balakrishnan, Geetha, Hatnean, Monica Ciomaga and Petrenko, Oleg (2022) Magnetic structures of geometrically frustrated SrGd2O4 derived from powder and single-crystal neutron diffraction. Physical Review B, 105 (1). 014425. doi:10.1103/PhysRevB.105.014425 ISSN 2469-9950.
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WRAP-Magnetic-structures-geometrically-frustrated-SrGd2O4-powder-single-crystal-neutron-2022.pdf - Published Version - Requires a PDF viewer. Download (3189Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevB.105.014425
Abstract
We present the low-temperature magnetic structures of SrGd2O4 combining neutron diffraction methods on polycrystalline and single-crystal samples containing the 160Gd isotope. In contrast to other members of the SrLn2O4 family (Ln = lanthanide) this system reveals two long-range ordered magnetic phases, which our diffraction data unambiguously identify. Below TN1 = 2.73 K, a q1 = (0 0 0) magnetic structure is stabilized where ferromagnetic chains along the c axis (space group Pnam) are coupled antiferromagnetically with neighboring chains. On cooling below TN2 = 0.48 K, an additional incommensurate component modulated by q2 = (0 0 0.42) evolves and is aligned along either of the perpendicular axes for the two different Gd sites, resulting in a fanlike magnetic structure. The identification of the particular Gd sites with the magnetic order observed with neutron diffraction is facilitated by a detailed analysis of the crystal fields acting on the sites. The observed ordering phenomena underline the complex multiaxial anisotropy in this system.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Rare earths , Rare earths -- Magnetic properties, Neutrons -- Diffraction , Polycrystals , Ferromagnetism , Anisotropy | ||||||||||||
| Journal or Publication Title: | Physical Review B | ||||||||||||
| Publisher: | American Physical Society | ||||||||||||
| ISSN: | 2469-9950 | ||||||||||||
| Official Date: | 1 January 2022 | ||||||||||||
| Dates: |
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| Volume: | 105 | ||||||||||||
| Number: | 1 | ||||||||||||
| Article Number: | 014425 | ||||||||||||
| DOI: | 10.1103/PhysRevB.105.014425 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
| Copyright Holders: | © 2022 American Physical Society | ||||||||||||
| Date of first compliant deposit: | 14 February 2022 | ||||||||||||
| Date of first compliant Open Access: | 18 February 2022 | ||||||||||||
| RIOXX Funder/Project Grant: |
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