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Journal article
Magnetic structure of the two-dimensional XY antiferromagnet Sr2CoSi2O7 studied using single-crystal neutron diffraction
Physical review. B, v 107(1), 014420
25 Jan 2023
Abstract
We report a combined polarized and unpolarized neutron diffraction study on a multiferroic Sr2CoSi2O7 (SCSO) single crystal below and above the antiferromagnetic ordering temperature TN = 6.5 K. Unpolarized neutron diffraction measurements at 15 K confirm the melilite-type tetragonal P4 over bar 21m space group as the parent structure of SCSO. The low temperature study at 2.3 K, in contrast, reveals symmetry lowering with the orthorhombic Cmm'2' and P212'12' magnetic space groups being equally possible. In these Cmm'2' and P212'12' magnetic space groups we obtain a very similar ordered magnetic moment about 2.86 and 2.94 mu B/Co2+, respectively, which lies in the ab plane. Our spin polarized flipping ratio measurements under an applied magnetic field of 6 T in the paramagnetic state support the results of our bulk magnetization data, indicating strong easy-plane spin anisotropy, responsible for the in-plane order below TN.
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Details
- Title
- Magnetic structure of the two-dimensional XY antiferromagnet Sr2CoSi2O7 studied using single-crystal neutron diffraction
- Creators
- Rajesh Dutta - RWTH Aachen UniversityHenrik Thoma - RWTH Aachen UniversityAndrew Sazonov - European Spallation SourceBalint Nafradi - École Polytechnique Fédérale de LausanneMartin Meven - RWTH Aachen UniversityArsen Gukasov - Laboratoire Léon BrillouinVilmos Kocsis - Leibniz Institute for Solid State and Materials ResearchUli Zeitler - Radboud University NijmegenAlessandro Puri - Radboud University NijmegenYusuke Tokunaga - RIKEN Center for Emergent Matter ScienceYasujiro Taguchi - RIKEN Center for Emergent Matter ScienceYoshinori Tokura - The University of TokyoSandor Bordacs - Budapest University of Technology and EconomicsIstvan Kezsmaerki - University of AugsburgVladimir Hutanu - RWTH Aachen University
- Publication Details
- Physical review. B, v 107(1), 014420
- Publisher
- Amer Physical Soc
- Number of pages
- 7
- Grant note
- HFML-RU
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000927608900003
- Scopus ID
- 2-s2.0-85147193746
- Other Identifier
- 991022004634704721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter