Rb2Fe2O9As2
MAGNDATA entry 0.91 · source
noncoplanar ferrimagnet
Opposite moments of different size leave a net magnetisation.
ordered ≤ 25 K (−248 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.Research/Sitter/MAGNDATA / 0.91_Rb2Fe2O(AsO4)2.mcif
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| Magnetic group | P n′ m a′ BNS 62.448 |
| Point group | m′m′m |
| Parent space group | P n m a No. 62 |
| Spins | noncoplanar · net moment 1.36 μB per cell |
| Propagation | [0 0 0] 1k |
| Cell | a 8.5331 · b 5.7892 · c 18.611 Å · α 90° · β 90° · γ 90° |
| Transition | 25 K (−248 °C) |
| Measured at | 4 K |
| Magnetic ions | Fe |
| Largest moment component | 3.1 μB |
| Method | NPD |
| site | element | x | y | z | ma | mb | mc | |m| (μB) |
|---|---|---|---|---|---|---|---|---|
| Rb1 | Rb | 0.8888 | 0.25 | 0.8628 | ||||
| Rb2 | Rb | 0.0379 | 0.25 | 0.2679 | ||||
| Fe1 | Fe | 0.2844 | 0.25 | 0.4347 | 0 | 3.1 | 0 | 3.1 |
| Fe2 | Fe | 0 | 0 | 0.5 | −0.5 | −2.76 | 1.3 | 3.0915 |
| As1 | As | 0.8204 | 0.25 | 0.6426 | ||||
| As2 | As | 0.6758 | 0.25 | 0.444 | ||||
| O1 | O | 1.058 | 0.25 | 0.4375 | ||||
| O2 | O | 0.961 | 0.25 | 0.576 | ||||
| O3 | O | 0.7666 | 0.0108 | 0.4785 | ||||
| O4 | O | 0.4923 | 0.25 | 0.4744 | ||||
| O5 | O | 0.7043 | 0.0127 | 0.6338 | ||||
| O6 | O | 0.6843 | 0.25 | 0.3556 | ||||
| O7 | O | 0.913 | 0.25 | 0.7197 |
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.
Garlea, V.O. et al. PHYSICAL REVIEW B (2014) · doi:10.1103/PhysRevB.89.014426
Cite the original paper and MAGNDATA, not this mirror.
⬇ 0.91_Rb2Fe2O(AsO4)2.mcif from MAGNDATA · entry page
sha256 of this copy: 9cdbbea32470cd56d93bc1ed28c42b1bf05c29f3d0d6d1b94751ed1573df0ba4
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.91_Rb2Fe2O(AsO4)2.mcif.