Ni1Cr2O4
MAGNDATA entry 0.895 · source
s-wave ferrimagnet
Opposite moments of different size leave a net magnetisation.
Spin group ¹4/¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.
Research/Sitter/MAGNDATA / 0.895_NiCr2O4.mcif
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| Magnetic group | I m m′ a′ BNS 74.559 |
| Point group | m′m′m |
| Parent space group | I 41/a m d No. 141 |
| Spins | collinear · net moment 2.32 μB per cell |
| Propagation | [0 0 0] 1k |
| Cell | a 5.76 · b 5.76 · c 8.5 Å · α 90° · β 90° · γ 90° |
| Measured at | 4.2 K |
| Magnetic ions | Cr, Ni |
| Largest moment component | 0.82 μB |
| Method | NPD |
| site | element | x | y | z | ma | mb | mc | |m| (μB) |
|---|---|---|---|---|---|---|---|---|
| Ni1 | Ni | 0 | 0.5 | 0.25 | 0.82 | 0 | 0 | 0.82 |
| Cr1_1 | Cr | 0 | 0.75 | 0.625 | −0.7 | 0 | 0 | 0.7 |
| Cr1_2 | Cr | 0.25 | 0.5 | 0.875 | −0.7 | 0 | 0 | 0.7 |
| O1_1 | O | 0 | 0.239 | 0.392 | ||||
| O1_2 | O | 0.761 | 0.5 | 0.642 |
Moment components are along the crystal axes a, b, c (μB), as magCIF writes them. Symmetry generates the rest of the cell from these sites.
E. F. Bertaut et al. Acta Cryst. A (1972) · doi:10.1107/S0567739472001482
Cite the original paper and MAGNDATA, not this mirror.
⬇ 0.895_NiCr2O4.mcif from MAGNDATA · entry page
sha256 of this copy: 0838679641050c3258756606e0f57ed9b3e98723fe1581285565fd0be8aafadf
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.895_NiCr2O4.mcif.