Research/Sitter/MAGNDATA / 0.413_UGeSe.mcif

UGeSe

MAGNDATA entry 0.413 · source

antiferromagnet

No net magnetisation, and up and down sublattices are related by a shift or by inversion, so the bands stay spin-degenerate: a conventional antiferromagnet.

Spin group ¹4/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 40 K (−233 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I 4/m′ m′ m′ BNS 139.539
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 3.932 · b 3.932 · c 16.966 Å · α 90° · β 90° · γ 90°
Transition	40 K (−233 °C)
Measured at	4 K
Magnetic ions	U
Largest moment component	0.26 μ_B
Method	NPD

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 I 4/m′ m′ m′ →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
U1	U	0	0.1316	0	0	0.26	0.26
Se1	Se	0	0.3114
Ge1	Ge	0.5	0

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

H. Ptasiewicz-Bąk et al. physica status solidi (a) (1978) · doi:10.1002/pssa.2210470202

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.413_UGeSe.mcif from MAGNDATA · entry page

sha256 of this copy: a3460c1cc4b981f9858f59af5eb58e9f1f45ea16c1e84372cc9e91076b1afe0a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.413_UGeSe.mcif.