CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Tuning of Magnetic Properties of $\alpha$-RuCl$_{3}$ Single Crystal by Cr Doping |
Yu-Jie Yuan1, Cheng-He Li2, Shang-Jie Tian2, He-Chang Lei2**, Xiao Zhang1** |
1State Key Laboratory of Information Photonicsx and Optical Communications, and School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China 2Department of Physics, and Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872, China
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Cite this article: |
Yu-Jie Yuan, Cheng-He Li, Shang-Jie Tian et al 2020 Chin. Phys. Lett. 37 067501 |
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Abstract We study the influence of Cr doping on magnetic properties of $\alpha$-RuCl$_{3}$ single crystals in detail. With increasing Cr content, the $c$-axial lattice parameter increases gradually, implying that the Cr doping may weaken the interlayer interactions. The magnetism of Ru$_{1-x}$Cr$_{x}$Cl$_{3}$ single crystals evolves from a long-range AFM order to a possible spin-glass state with Cr doping. The appearance of a possible spin-glass state can be explained by the introduction of FM interaction by Cr$^{3+}$ ions, which competes with the AFM interaction between Ru$^{3+}$ ions. Moreover, the larger magnetic moment of Cr$^{3+}$ ion with $S= 3/2$ than Ru$^{3+}$ ion with $J_{\rm eff}= 1/2$ also results in a monotonic increase of the effective moment of Ru$_{1-x}$Cr$_{x}$Cl$_{3}$ single crystal.
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Received: 21 January 2020
Published: 26 May 2020
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PACS: |
75.50.Ee
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(Antiferromagnetics)
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75.50.Lk
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(Spin glasses and other random magnets)
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75.40.Cx
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(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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Fund: *Supported by the Fundamental Research Funds for the Central Universities and the Research Funds of Renmin University of China (Grant Nos. 15XNLQ07, 18XNLG14, and 19XNLG17). |
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