Research/Sitter/MAGNDATA / 1.1.9_Ce2Pd2Sn.mcif

Ce₂Pd₂Sn

MAGNDATA entry 1.1.9 · 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 ≤ 4.8 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	Pbam1′(α00)0s0s
Point group	mmm1′
Parent space group	P 4/m b m No. 127
Repeats every	9.52 cells along a (not a whole number: that's what incommensurate means)
Propagation	[0.105 0 0] 1k
Cell	a 7.762 · b 7.762 · c 3.93 Å · α 90° · β 90° · γ 90°
Transition	4.8 K (−268 °C)
Measured at	4 K
Magnetic ions	Ce
Largest moment component	1.7 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 Pbam1′(α00)0s0s →

Atom sites · 3 sites · CSV

site	element	x	y	z
Ce1	Ce	0.1781	0.6781	0.5
Pd1	Pd	0.3734	0.8734	0
Sn1	Sn	0	0	0

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

Rodriguez-Carvajal, J et al. EPJ Web of Conferences (2012) · doi:10.1051/epjconf/20122200010

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.1.9_Ce2Pd2Sn.mcif from MAGNDATA · entry page

sha256 of this copy: 1d8b61159ef0be0afe912df5acad7f17bc51639e4a21f0f9268359c7191786d4
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.1.9_Ce2Pd2Sn.mcif.