Research/Sitter/MAGNDATA / 1.1.154_CePtAl4Ge2.mcif

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Spin lattice of Ce1Pt1Al4Ge2Spin lattice of Ce1Pt1Al4Ge2

Ce1Pt1Al4Ge2

MAGNDATA entry 1.1.154 · 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 ≤ 2.3 K (−271 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupB2/m1′(α,β,0)0ss
Point group2/m1′
Parent space groupR3m No. 166
Repeats every1.05 cells along b (not a whole number: that's what incommensurate means)
Propagation[0.86667 -0.95667 0] 1k
Cella 21.26216 · b 10.83481 · c 4.18243 Å · α 90° · β 90° · γ 19.39862°
Transition2.3 K (−271 °C)
Measured at0.07 K
Magnetic ionsCe
Largest moment component3.871 μB
MethodNPD

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 B2/m1′(α,β,0)0ss →
Atom sites · 5 sites · CSV
siteelementxyzmambmc|m| (μB)
Al1Al−0.0806−0.08060
Al2Al0.30640.30640
Ce1Ce00.50.5
Ge1Ge0.22370.22370
Pt1Pt000

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

S. Shin et al. PHYSICAL REVIEW B (2020) · doi:10.1103/PhysRevB.101.224421

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.1.154_CePtAl4Ge2.mcif from MAGNDATA · entry page

sha256 of this copy: 7660559b052758f69fefe17b94dd7f813f4bbfaf900102863292ca0bb35905e4
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.1.154_CePtAl4Ge2.mcif.