Research/Sitter/MAGNDATA / 0.282_U14Au51.mcif

U₁₄Au₅₁

MAGNDATA entry 0.282 · 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 ¹6/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 22 K (−251 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 6′/m BNS 175.139
Parent space group	P 6/m No. 175
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 12.615 · b 12.615 · c 9.118 Å · α 90° · β 90° · γ 120°
Transition	22 K (−251 °C)
Measured at	11 K
Magnetic ions	U
Largest moment component	1.8 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 P 6′/m →

Atom sites · 10 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Au1	Au	0.072	0.265	0.24
Au2	Au	0.116	0.494	0.146
Au3	Au	0.443	0.102	0.336
Au4	Au	0.232	0.051	0.5
Au5	Au	0.978	0.098	0
Au6	Au	0.3333	0.6667	0.312
Au7	Au	0.3333	0.6667	0
U1	U	0.137	0.46	0.5	0	0	0.5	0.5
U2	U	0.399	0.109	0	0	0	1.8	1.8
U3	U	0	0	0.306

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

A. Dommann et al. Journal of the Less-Common Metals (1990) · doi:10.1016/0022-5088(90)90119-5

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.282_U14Au51.mcif from MAGNDATA · entry page

sha256 of this copy: c6aef499193d540848a01bb73ce4c4f531275dee5e5d612099f113d5c0cf83ea
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.282_U14Au51.mcif.