Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet
Abstract Magnetic toroidicity is an uncommon type of magnetic structure in solid-state materials. Here, we experimentally demonstrate that collinear spins in a material with R-3 lattice symmetry can host a significant magnetic toroidicity, even parallel to the ordered spins. Taking advantage of a si...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43858-z |
| _version_ | 1827590401649803264 |
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| author | Xianghan Xu Yiqing Hao Shiyu Peng Qiang Zhang Danrui Ni Chen Yang Xi Dai Huibo Cao R. J. Cava |
| author_facet | Xianghan Xu Yiqing Hao Shiyu Peng Qiang Zhang Danrui Ni Chen Yang Xi Dai Huibo Cao R. J. Cava |
| author_sort | Xianghan Xu |
| collection | DOAJ |
| description | Abstract Magnetic toroidicity is an uncommon type of magnetic structure in solid-state materials. Here, we experimentally demonstrate that collinear spins in a material with R-3 lattice symmetry can host a significant magnetic toroidicity, even parallel to the ordered spins. Taking advantage of a single crystal sample of CoTe6O13 with an R-3 space group and a Co2+ triangular sublattice, temperature-dependent magnetic, thermodynamic, and neutron diffraction results reveal A-type antiferromagnetic order below 19.5 K, with magnetic point group -3′ and k = (0,0,0). Our symmetry analysis suggests that the missing mirror symmetry in the lattice could lead to the local spin canting for a toroidal moment along the c axis. Experimentally, we observe a large off-diagonal magnetoelectric coefficient of 41.2 ps/m that evidences the magnetic toroidicity. In addition, the paramagnetic state exhibits a large effective moment per Co2+, indicating that the magnetic moment in CoTe6O13 has a significant orbital contribution. CoTe6O13 embodies an excellent opportunity for the study of next-generation functional magnetoelectric materials. |
| first_indexed | 2024-03-09T01:16:21Z |
| format | Article |
| id | doaj.art-2b9e435906a54501979f9916f2162e12 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-09T01:16:21Z |
| publishDate | 2023-12-01 |
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| spelling | doaj.art-2b9e435906a54501979f9916f2162e122023-12-10T12:25:09ZengNature PortfolioNature Communications2041-17232023-12-0114111210.1038/s41467-023-43858-zLarge off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnetXianghan Xu0Yiqing Hao1Shiyu Peng2Qiang Zhang3Danrui Ni4Chen Yang5Xi Dai6Huibo Cao7R. J. Cava8Department of Chemistry, Princeton UniversityNeutron Scattering Division, Oak Ridge National LaboratoryDepartment of Physics, Hong Kong University of Science and TechnologyNeutron Scattering Division, Oak Ridge National LaboratoryDepartment of Chemistry, Princeton UniversityDepartment of Chemistry, Princeton UniversityDepartment of Physics, Hong Kong University of Science and TechnologyNeutron Scattering Division, Oak Ridge National LaboratoryDepartment of Chemistry, Princeton UniversityAbstract Magnetic toroidicity is an uncommon type of magnetic structure in solid-state materials. Here, we experimentally demonstrate that collinear spins in a material with R-3 lattice symmetry can host a significant magnetic toroidicity, even parallel to the ordered spins. Taking advantage of a single crystal sample of CoTe6O13 with an R-3 space group and a Co2+ triangular sublattice, temperature-dependent magnetic, thermodynamic, and neutron diffraction results reveal A-type antiferromagnetic order below 19.5 K, with magnetic point group -3′ and k = (0,0,0). Our symmetry analysis suggests that the missing mirror symmetry in the lattice could lead to the local spin canting for a toroidal moment along the c axis. Experimentally, we observe a large off-diagonal magnetoelectric coefficient of 41.2 ps/m that evidences the magnetic toroidicity. In addition, the paramagnetic state exhibits a large effective moment per Co2+, indicating that the magnetic moment in CoTe6O13 has a significant orbital contribution. CoTe6O13 embodies an excellent opportunity for the study of next-generation functional magnetoelectric materials.https://doi.org/10.1038/s41467-023-43858-z |
| spellingShingle | Xianghan Xu Yiqing Hao Shiyu Peng Qiang Zhang Danrui Ni Chen Yang Xi Dai Huibo Cao R. J. Cava Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet Nature Communications |
| title | Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet |
| title_full | Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet |
| title_fullStr | Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet |
| title_full_unstemmed | Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet |
| title_short | Large off-diagonal magnetoelectricity in a triangular Co2+-based collinear antiferromagnet |
| title_sort | large off diagonal magnetoelectricity in a triangular co2 based collinear antiferromagnet |
| url | https://doi.org/10.1038/s41467-023-43858-z |
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