Type-II antiferromagnetic ordering in double perovskite oxide Sr$_2$NiWO$_6$
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866913294159183872 |
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| author | Su, Cheng Zeng, Xu-Tao Sun, Kaitong Sheptyakov, Denis Chen, Ziyu Sheng, Xian-Lei Li, Haifeng Jin, Wentao |
| author_facet | Su, Cheng Zeng, Xu-Tao Sun, Kaitong Sheptyakov, Denis Chen, Ziyu Sheng, Xian-Lei Li, Haifeng Jin, Wentao |
| contents | Magnetic double perovskite compounds provide a fertile playground to explore interesting electronic and magnetic properties. By complementary macroscopic characterizations, neutron powder diffraction measurements and first-principles calculations, we have performed comprehensive studies on the magnetic ordering in the double perovskite compound Sr$_2$NiWO$_6$. It is found by neutron diffraction to order magnetically in a collinear type-II antiferromagnetic structure in a tetragonal lattice with $k$ = (0.5, 0, 0.5) below $T\rm_N$ = 56 K. In the ground state, the ordered moment of the spin-1 Ni$^{2+}$ ions is determined to be 1.9(2) $μ\rm_{B}$, indicating a significant quenching of the orbital moment. The Ni$^{2+}$ moments in Sr$_2$NiWO$_6$ are revealed to cant off the $c$ axis by 29.2$^{\circ}$, which is well supported by the first-principles magnetic anisotropy energy calculations. Furthermore, the in-plane and out-of-plane next-nearest-neighbor superexchange couplings ($J\rm_2$ and $J\rm_{2c}$) are found to play a dominant role in the spin Hamiltonian of Sr$_2$NiWO$_6$, which accounts for the stabilization of the type-II AFM structure as its magnetic ground state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_14370 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Type-II antiferromagnetic ordering in double perovskite oxide Sr$_2$NiWO$_6$ Su, Cheng Zeng, Xu-Tao Sun, Kaitong Sheptyakov, Denis Chen, Ziyu Sheng, Xian-Lei Li, Haifeng Jin, Wentao Strongly Correlated Electrons Magnetic double perovskite compounds provide a fertile playground to explore interesting electronic and magnetic properties. By complementary macroscopic characterizations, neutron powder diffraction measurements and first-principles calculations, we have performed comprehensive studies on the magnetic ordering in the double perovskite compound Sr$_2$NiWO$_6$. It is found by neutron diffraction to order magnetically in a collinear type-II antiferromagnetic structure in a tetragonal lattice with $k$ = (0.5, 0, 0.5) below $T\rm_N$ = 56 K. In the ground state, the ordered moment of the spin-1 Ni$^{2+}$ ions is determined to be 1.9(2) $μ\rm_{B}$, indicating a significant quenching of the orbital moment. The Ni$^{2+}$ moments in Sr$_2$NiWO$_6$ are revealed to cant off the $c$ axis by 29.2$^{\circ}$, which is well supported by the first-principles magnetic anisotropy energy calculations. Furthermore, the in-plane and out-of-plane next-nearest-neighbor superexchange couplings ($J\rm_2$ and $J\rm_{2c}$) are found to play a dominant role in the spin Hamiltonian of Sr$_2$NiWO$_6$, which accounts for the stabilization of the type-II AFM structure as its magnetic ground state. |
| title | Type-II antiferromagnetic ordering in double perovskite oxide Sr$_2$NiWO$_6$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2303.14370 |