Research/Sitter/MAGNDATA / 1.1.35_CeRuSn.mcif

CeRuSn

MAGNDATA entry 1.1.35 · source

incommensurate spiral

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 spiral: the spin direction rotates as you move along.

ordered ≤ 2.8 K (−270 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C2/m1′(α0γ)0ss
Point group	2/m1′
Parent space group	C 2/m No. 12
Repeats every	5.71 cells along c (not a whole number: that's what incommensurate means)
Propagation	[0 0 0.175] 1k
Cell	a 11.5527 · b 4.7493 · c 5.1065 Å · α 90° · β 102.975° · γ 90°
Transition	2.8 K (−270 °C)
Measured at	1.6 K
Magnetic ions	Ce
Largest moment component	0.83 μ_B
Method	NSD

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 C2/m1′(α0γ)0ss →

Atom sites · 3 sites · CSV

site	element	x	z
Ce1	Ce	0.372	0.1816
Ru1	Ru	0.3108	0.6611
Sn1	Sn	0.4154	0.6936

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 (μ_B), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

K. Prokes et al. J. PHYS.: CONDENS. MATTER (2014) · doi:10.1088/0953-8984/26/12/122201

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.1.35_CeRuSn.mcif from MAGNDATA · entry page

sha256 of this copy: 542956a83eba3416e2e22f11646816ac7b663343154e49eebdc81d8bed87e8f3
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.1.35_CeRuSn.mcif.