Ground state and magnetic transitions of the orthorhombic antiferromagnet CaCo$_2$TeO$_6$
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916739160211456 |
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| author | Huang, Xing Ma, Peiyue Huo, Mengwu Huang, Chaoxin Sun, Hualei Chen, Xiang Deng, Sihao He, Lunhua Xie, Tao He, Zhangzhen Wang, Meng |
| author_facet | Huang, Xing Ma, Peiyue Huo, Mengwu Huang, Chaoxin Sun, Hualei Chen, Xiang Deng, Sihao He, Lunhua Xie, Tao He, Zhangzhen Wang, Meng |
| contents | We report the systematic synthesis, crystal structure, magnetization, and powder neutron diffraction of single crystalline and polycrystalline CaCo$_2$TeO$_6$ samples. CaCo$_2$TeO$_6$ crystallizes in an orthorhombic structure with $Pnma$ space group, featuring chains of edge-shared CoO$_6$ octahedra arranged in a honeycomb pattern. Two antiferromagnetic transitions are observed at $T$$_{N1}$ = 14.4 K and $T$$_{N2}$ = 16.2 K, corresponding to two long-range magnetic orders with propagation vectors of $\bf{k}$$_1$ = (0, 0, 0) and $\bf{k}$$_2$ = (0.125, 0, 0.25), respectively. The ground state is determined as a canted up-up-down-down zigzag spin configuration along the $c$ axis, wherein the magnetic moments of Co1 and Co2 ions are 3.4(1) and 2.1(1)$μ$$_B$, respectively. Successive spin-flop transitions appear with the increasing magnetic field applied along the easy axis ($c$ axis), accompanied by depression of the antiferromagnetic orders and enhancement of residual magnetic entropy. The field-induced spin-disordered state suggests that CaCo$_2$TeO$_6$ may be an ideal candidate for studying frustrated magnetism. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_12724 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ground state and magnetic transitions of the orthorhombic antiferromagnet CaCo$_2$TeO$_6$ Huang, Xing Ma, Peiyue Huo, Mengwu Huang, Chaoxin Sun, Hualei Chen, Xiang Deng, Sihao He, Lunhua Xie, Tao He, Zhangzhen Wang, Meng Strongly Correlated Electrons We report the systematic synthesis, crystal structure, magnetization, and powder neutron diffraction of single crystalline and polycrystalline CaCo$_2$TeO$_6$ samples. CaCo$_2$TeO$_6$ crystallizes in an orthorhombic structure with $Pnma$ space group, featuring chains of edge-shared CoO$_6$ octahedra arranged in a honeycomb pattern. Two antiferromagnetic transitions are observed at $T$$_{N1}$ = 14.4 K and $T$$_{N2}$ = 16.2 K, corresponding to two long-range magnetic orders with propagation vectors of $\bf{k}$$_1$ = (0, 0, 0) and $\bf{k}$$_2$ = (0.125, 0, 0.25), respectively. The ground state is determined as a canted up-up-down-down zigzag spin configuration along the $c$ axis, wherein the magnetic moments of Co1 and Co2 ions are 3.4(1) and 2.1(1)$μ$$_B$, respectively. Successive spin-flop transitions appear with the increasing magnetic field applied along the easy axis ($c$ axis), accompanied by depression of the antiferromagnetic orders and enhancement of residual magnetic entropy. The field-induced spin-disordered state suggests that CaCo$_2$TeO$_6$ may be an ideal candidate for studying frustrated magnetism. |
| title | Ground state and magnetic transitions of the orthorhombic antiferromagnet CaCo$_2$TeO$_6$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2503.12724 |