Research/Sitter/MAGNDATA / 1.1.142_CeCoIn5.mcif

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Spin lattice of Ce1Co1In5Spin lattice of Ce1Co1In5

Ce1Co1In5

MAGNDATA entry 1.1.142 · source
incommensurate spin-density wave
Incommensurate: the magnetic pattern repeats every so many cells, but not a whole number of them, so it never lines up with the crystal lattice. Here it's a spin-density wave: the size of the spin swells and shrinks as you move along.
ordered ≤ 0.3 K (−273 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupCmmm1′(α,α,1/2)s00s
Point groupmmm1′
Parent space groupP 4/m m m No. 123
Repeats every2 cells along c (not a whole number: that's what incommensurate means)
Propagation[0.44 0.44 0.5] 1k
Cella 4.601 · b 4.601 · c 7.54 Å · α 90° · β 90° · γ 90°
Transition0.3 K (−273 °C)
Measured at0.06 K
Magnetic ionsCe
Largest moment component0.15 μB
MethodNSD

Symmetry

Stereogram of the magnetic point group: each operation applied to one direction. Filled = upper hemisphere, ring = lower; red operations include time reversal. Lines are mirrors; polygons are 2/3/4/6-fold axes; the centre ring is inversion.

Every structure in Cmmm1′(α,α,1/2)s00s →
Atom sites · 4 sites · CSV
siteelementxyzmambmc|m| (μB)
Ce1_1Ce000
Co1_1Co000.5
In1_1In0.50.50
In2_1In0.500.6897

Incommensurate: the moments are modulated; the picture evaluates each atom's Fourier series at its own phase.

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.

Source

M. Kenzelmann et al. Science (2008) · doi:10.1126/science.11618

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.1.142_CeCoIn5.mcif from MAGNDATA · entry page

sha256 of this copy: 17e6f5fa274eaedade27581d0207e504c5e2ca7e557af782b5edc9fa8068148e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.1.142_CeCoIn5.mcif.