Synthesis and anisotropic magnetic properties of LiCrTe single crystals with a triangular-lattice antiferromagnetic structure
We report on the synthesis of LiCrTe $_{\textrm{2}}$ single crystals and on their anisotropic magnetic properties. We have obtained these single crystals by employing a Te/Li-flux synthesis method. We find LiCrTe $_{\textrm{2}}$ to crystallize in a TlCdS $_{\textrm{2}}$ -type structure with cell par...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | JPhys Materials |
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| Online Access: | https://doi.org/10.1088/2515-7639/acd27a |
| _version_ | 1797825328007086080 |
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| author | Catherine Witteveen Elisabetta Nocerino Sara A López-Paz Harald O Jeschke Vladimir Y Pomjakushin Martin Månsson Fabian O von Rohr |
| author_facet | Catherine Witteveen Elisabetta Nocerino Sara A López-Paz Harald O Jeschke Vladimir Y Pomjakushin Martin Månsson Fabian O von Rohr |
| author_sort | Catherine Witteveen |
| collection | DOAJ |
| description | We report on the synthesis of LiCrTe $_{\textrm{2}}$ single crystals and on their anisotropic magnetic properties. We have obtained these single crystals by employing a Te/Li-flux synthesis method. We find LiCrTe $_{\textrm{2}}$ to crystallize in a TlCdS $_{\textrm{2}}$ -type structure with cell parameters of a = 3.9512(5) Å and c = 6.6196(7) Å at T = 175 K. The content of lithium in these crystals was determined to be neary stoichiometric by means of neutron diffraction. We find a pronounced magnetic transition at $T^{\mathrm{{\,}ab}}_{\mathrm{N}}$ = 144 K and $T^{\mathrm{{\,}c}}_{\mathrm{N}}$ = 148 K, respectively. These transition temperatures are substantially higher than earlier reports on polycrystalline samples. We have performed neutron powder diffraction measurements that reveal that the long-range low-temperature magnetic structure of single crystalline LiCrTe $_{\textrm{2}}$ is an A-type antiferromagnetic structure. Our DFT calculations are in good agreement with these experimental observations. We find the system to be easy axis with moments oriented along the c -direction experimentally as well as in our calculations. Thereby, the magnetic Hamiltonian can be written as $H = H_{\mathrm{Heisenberg}} + \sum_i K_c (S_i^z)^2$ with $K_c = -0.34$ K (where $|S^z| = \frac{3}{2}$ ). We find LiCrTe $_{\textrm{2}}$ to be highly anisotropic, with a pronounced metamagnetic transition for $H \perp ab$ with a critical field of $\mu H_{MM}$ (5 K) ≈ 2.5 T. Using detailed orientation-dependent magnetization measurements, we have determined the magnetic phase diagram of this material. Our findings suggest that LiCrTe $_{\textrm{2}}$ is a promising material for exploring the interplay between crystal structure and magnetism, and could have potential applications in spin-based 2D devices. |
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| institution | Directory Open Access Journal |
| issn | 2515-7639 |
| language | English |
| last_indexed | 2024-03-13T10:52:28Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
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| spelling | doaj.art-936db011011e479c966ccc7da53002b22023-05-17T08:19:00ZengIOP PublishingJPhys Materials2515-76392023-01-016303500110.1088/2515-7639/acd27aSynthesis and anisotropic magnetic properties of LiCrTe single crystals with a triangular-lattice antiferromagnetic structureCatherine Witteveen0https://orcid.org/0000-0003-0710-9298Elisabetta Nocerino1https://orcid.org/0000-0003-4441-8882Sara A López-Paz2https://orcid.org/0000-0003-2278-7038Harald O Jeschke3https://orcid.org/0000-0002-8091-7024Vladimir Y Pomjakushin4Martin Månsson5Fabian O von Rohr6https://orcid.org/0000-0003-0422-6042Department of Quantum Matter Physics, University of Geneva , Quai Ernest-Ansermet 24, 1211 Geneva, Switzerland; Department of Physics, University of Zürich , Winterthurerstr. 190, 8057 Zürich, SwitzerlandLaboratory for Neutron Scattering and Imaging, Paul Scherrer Institute , CH-5232 Villigen PSI, SwitzerlandDepartment of Quantum Matter Physics, University of Geneva , Quai Ernest-Ansermet 24, 1211 Geneva, SwitzerlandResearch Institute for Interdisciplinary Science, Okayama University , Okayama 700-8530, JapanLaboratory for Neutron Scattering and Imaging, Paul Scherrer Institute , CH-5232 Villigen PSI, SwitzerlandDepartment of Applied Physics, KTH Royal Institute of Technology , Roslagstullsbacken 21, SE-106 91 Stockholm, SwedenDepartment of Quantum Matter Physics, University of Geneva , Quai Ernest-Ansermet 24, 1211 Geneva, SwitzerlandWe report on the synthesis of LiCrTe $_{\textrm{2}}$ single crystals and on their anisotropic magnetic properties. We have obtained these single crystals by employing a Te/Li-flux synthesis method. We find LiCrTe $_{\textrm{2}}$ to crystallize in a TlCdS $_{\textrm{2}}$ -type structure with cell parameters of a = 3.9512(5) Å and c = 6.6196(7) Å at T = 175 K. The content of lithium in these crystals was determined to be neary stoichiometric by means of neutron diffraction. We find a pronounced magnetic transition at $T^{\mathrm{{\,}ab}}_{\mathrm{N}}$ = 144 K and $T^{\mathrm{{\,}c}}_{\mathrm{N}}$ = 148 K, respectively. These transition temperatures are substantially higher than earlier reports on polycrystalline samples. We have performed neutron powder diffraction measurements that reveal that the long-range low-temperature magnetic structure of single crystalline LiCrTe $_{\textrm{2}}$ is an A-type antiferromagnetic structure. Our DFT calculations are in good agreement with these experimental observations. We find the system to be easy axis with moments oriented along the c -direction experimentally as well as in our calculations. Thereby, the magnetic Hamiltonian can be written as $H = H_{\mathrm{Heisenberg}} + \sum_i K_c (S_i^z)^2$ with $K_c = -0.34$ K (where $|S^z| = \frac{3}{2}$ ). We find LiCrTe $_{\textrm{2}}$ to be highly anisotropic, with a pronounced metamagnetic transition for $H \perp ab$ with a critical field of $\mu H_{MM}$ (5 K) ≈ 2.5 T. Using detailed orientation-dependent magnetization measurements, we have determined the magnetic phase diagram of this material. Our findings suggest that LiCrTe $_{\textrm{2}}$ is a promising material for exploring the interplay between crystal structure and magnetism, and could have potential applications in spin-based 2D devices.https://doi.org/10.1088/2515-7639/acd27atwo-dimensional materialsmagnetismmagnetic anisotropysingle crystal growth |
| spellingShingle | Catherine Witteveen Elisabetta Nocerino Sara A López-Paz Harald O Jeschke Vladimir Y Pomjakushin Martin Månsson Fabian O von Rohr Synthesis and anisotropic magnetic properties of LiCrTe single crystals with a triangular-lattice antiferromagnetic structure JPhys Materials two-dimensional materials magnetism magnetic anisotropy single crystal growth |
| title | Synthesis and anisotropic magnetic properties of LiCrTe single crystals with a triangular-lattice antiferromagnetic structure |
| title_full | Synthesis and anisotropic magnetic properties of LiCrTe single crystals with a triangular-lattice antiferromagnetic structure |
| title_fullStr | Synthesis and anisotropic magnetic properties of LiCrTe single crystals with a triangular-lattice antiferromagnetic structure |
| title_full_unstemmed | Synthesis and anisotropic magnetic properties of LiCrTe single crystals with a triangular-lattice antiferromagnetic structure |
| title_short | Synthesis and anisotropic magnetic properties of LiCrTe single crystals with a triangular-lattice antiferromagnetic structure |
| title_sort | synthesis and anisotropic magnetic properties of licrte single crystals with a triangular lattice antiferromagnetic structure |
| topic | two-dimensional materials magnetism magnetic anisotropy single crystal growth |
| url | https://doi.org/10.1088/2515-7639/acd27a |
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