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Song F, Liu A, Chen Q, Zhou J, Li J, Tong W, Wang S, Wang Y, Lu H, Yuan S, Guo H, Tian Z. Ba 6RE 2Ti 4O 17 (RE = Nd, Sm, Gd, Dy-Yb): A Family of Rare-Earth-Based Layered Triangular Lattice Magnets. Inorg Chem 2024; 63:5831-5841. [PMID: 38506755 DOI: 10.1021/acs.inorgchem.3c04162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
The exploration of new rare-earth (RE)-based triangular-lattice materials plays a significant role in motivating the discovery of exotic magnetic states. Herein, we report a family of hexagonal perovskite compounds Ba6RE2Ti4O17 (RE = Nd, Sm, Gd, Dy-Yb) with a space group of P63/mmc, where magnetic RE3+ ions are distributed on the parallel triangular-lattice layers within the ab-plane and stacked in an 'AA'-type fashion along the c-axis. The low-temperature magnetic characterizations indicate that all synthesized Ba6RE2Ti4O17 compounds exhibit dominant antiferromagnetic (AFM) interactions and the absence of magnetic order down to 1.8 K. The isothermal magnetization and electron spin resonance results reveal the distinct magnetic anisotropy for the compounds with different RE ions. Moreover, the as-grown Ba6Nd2Ti4O17 single crystals exhibit Ising-like magnetic anisotropy with a magnetic easy-axis perpendicular to the triangle-lattice plane and no long-range magnetic order down to 80 mK, as the quantum spin liquid candidate with dominant Ising-type interactions.
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Affiliation(s)
- Fangyuan Song
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Andi Liu
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Qiao Chen
- School of Physics and MOE Key Laboratory of Fundamental Physical quantum Physics, PGMF, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jin Zhou
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jingxin Li
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
| | - Wei Tong
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China
| | - Shun Wang
- School of Physics and MOE Key Laboratory of Fundamental Physical quantum Physics, PGMF, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yanhong Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hongcheng Lu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Songliu Yuan
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hanjie Guo
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Zhaoming Tian
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
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Liu A, Song F, Bu H, Li Z, Ashtar M, Qin Y, Liu D, Xia Z, Li J, Zhang Z, Tong W, Guo H, Tian Z. Ba 9RE 2(SiO 4) 6 (RE = Ho-Yb): A Family of Rare-Earth-Based Honeycomb-Lattice Magnets. Inorg Chem 2023; 62:13867-13876. [PMID: 37589129 DOI: 10.1021/acs.inorgchem.3c01693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Rare-earth (RE)-based honeycomb-lattice materials with strong spin-orbit coupled Jeff = 1/2 moments have attracted great interest as a platform to realize the Kitaev quantum spin liquid (QSL) state. Herein, we report the discovery of a family of RE-based honeycomb-lattice magnets Ba9RE2(SiO4)6 (RE = Ho-Yb), which crystallize into the rhombohedral structure with the space group R3̅. In these serial compounds, magnetic RE3+ ions are arranged on a perfect honeycomb lattice within the ab-plane and stacked in the "ABCABC"-type fashion along the c-axis. All synthesized Ba9RE2(SiO4)6 (RE = Ho-Yb) polycrystals exhibit the dominant antiferromagnetic interaction and absence of magnetic order down to 2 K. In combination with the magnetization and electron spin resonance results, magnetic behaviors are discussed for the compounds with different RE ions. Moreover, the as-grown Ba9Yb2(SiO4)6 single crystals show large magnetic frustration with frustration index f = θCW/TN > 8 and no long-range magnetic ordering down to 0.15 K, being a possible QSL candidate material. These series of compounds are attractive for exploring the exotic magnetic phases of Kitaev materials with 4f electrons.
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Affiliation(s)
- Andi Liu
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Fangyuan Song
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Huanpeng Bu
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Zhaohu Li
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Malik Ashtar
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Yuqi Qin
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Dingjun Liu
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Zhengcai Xia
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Jingxin Li
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - Zhitao Zhang
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - Wei Tong
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - Hanjie Guo
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Zhaoming Tian
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
- Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen, Guangdong 518057, China
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Ashtar M, Bai Y, Xu L, Wan Z, Wei Z, Liu Y, Marwat MA, Tian Z. Structure and Magnetic Properties of Melilite-Type Compounds RE 2Be 2GeO 7 (RE = Pr, Nd, Gd-Yb) with Rare-Earth Ions on Shastry-Sutherland Lattice. Inorg Chem 2021; 60:3626-3634. [PMID: 33635649 DOI: 10.1021/acs.inorgchem.0c03131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Rare-earth (RE)-based frustrated magnets, such as typical systems of combining strong spin-orbit coupling (SOC), geometric frustration, and anisotropic exchange interaction, can give rise to diverse exotic magnetic ground states such as quantum spin liquid. The discovery of new RE-based frustrated materials is crucial for exploring the exotic magnetic phases. Herein, we report the synthesis, structure, and magnetic properties of a family of melilite-type RE2Be2GeO7 (RE = Pr, Nd, and Gd-Yb) compounds crystallized in a tetragonal P4̅21m structure, where magnetic RE3+ ions lay out on the Shastry-Sutherland lattice (SSL) within the ab plane and are well separated by nonmagnetic [GeBe2O7]6- polyhedrons along the c-axis. Temperature (T)-dependent susceptibilities χ(T) and isothermal magnetization M(H) measurements reveal that most RE2Be2GeO7 compounds except RE = Tb show no magnetic ordering down to 2 K despite the dominant antiferromagnetic (AFM) interactions, where Tb2Be2GeO7 undergoes AFM transition with Néel temperature TN ∼ 2.5 K and field-induced spin flop behaviors (T < TN). In addition, the calculated magnetic entropy change ΔSm from the isothermal M(H) curves reveals viable magnetocaloric effect for RE2Be2GeO7 (RE = Gd and Dy) in liquid helium temperature regimes; Gd2Be2GeO7 shows the maximum ΔSm up to 54.8 J K-1 kg-1 at ΔH = 7 T and Dy2Be2GeO7 has the largest value ΔSm = 16.1 J K-1 kg-1 at ΔH = 2 T in this family. More excitingly, the rich diversity of RE ions in this family enables an archetype for exploring exotic quantum magnetic phenomena with large variability of spin located on the SSL lattice.
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Affiliation(s)
- Malik Ashtar
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yuming Bai
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Longmeng Xu
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Zongtang Wan
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Zijun Wei
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yong Liu
- School of Physics, Wuhan University, Wuhan 430072, PR China
| | - Mohsin Ali Marwat
- College of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Zhaoming Tian
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, PR China
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Hester G, DeLazzer TN, Lim SS, Brown CM, Ross KA. Néel ordering in the distorted honeycomb pyrosilicate: C-Er 2Si 2O 7. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:10.1088/1361-648X/abd5f8. [PMID: 33352544 PMCID: PMC10629842 DOI: 10.1088/1361-648x/abd5f8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
The rare-earth pyrosilicate family of compounds (RE2Si2O7) hosts a variety of polymorphs, some with honeycomb-like geometries of the rare-earth sublattices, and the magnetism has yet to be deeply explored in many of the cases. Here we report on the ground state properties of C-Er2Si2O7. C-Er2Si2O7crystallizes in the C2/m space group and the Er3+atoms form a distorted honeycomb lattice in thea-bplane. We have utilized specific heat, DC susceptibility, and neutron diffraction measurements to characterize C-Er2Si2O7. Our specific heat and DC susceptibility measurements show signatures of antiferromagnetic ordering at 2.3 K. Neutron powder diffraction confirms this transition temperature and the relative intensities of the magnetic Bragg peaks are consistent with a collinear Néel state in the magnetic space group C2'/m, with ordered moment of 6.61μBcanted 13° away from thec-axis toward thea-axis. These results are discussed in relation to the isostructural quantum dimer magnet compound Yb2Si2O7.
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Affiliation(s)
- Gavin Hester
- Department of Physics, Colorado State University, 200 W. Lake St., Fort Collins, CO 80523-1875, USA
| | - T. N. DeLazzer
- Department of Physics, Colorado State University, 200 W. Lake St., Fort Collins, CO 80523-1875, USA
| | - S. S. Lim
- Department of Physics, Colorado State University, 200 W. Lake St., Fort Collins, CO 80523-1875, USA
| | - C. M. Brown
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland, 20899-6102, USA
| | - K. A. Ross
- Department of Physics, Colorado State University, 200 W. Lake St., Fort Collins, CO 80523-1875, USA
- Quantum Materials Program, CIFAR, Toronto, Ontario M5G 1Z8, Canada
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Jiang N, Ramanathan A, Baumbach RE, La Pierre HS. Synthesis of a d 2 kagome lattice antiferromagnet, (CH 3NH 3) 2NaV 3F 12. Chem Sci 2020; 11:11811-11817. [PMID: 34123207 PMCID: PMC8162467 DOI: 10.1039/d0sc03323e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new d2-vanadium-based KLAF, (CH3NH3)2NaV3F12, was synthesized hydrothermally and is a candidate to study S = 1 KLAF physics.
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Affiliation(s)
- Ningxin Jiang
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
| | - Arun Ramanathan
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
| | | | - Henry S. La Pierre
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
- Nuclear and Radiological Engineering Program
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