Research/Sitter/MAGNDATA / 0.283_U14Au51.mcif

U₁₄Au₅₁

MAGNDATA entry 0.283 · source

noncollinear antiferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

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

Structure · 11 properties

Magnetic group	P 6/m′ BNS 175.140
Point group	6/m′
Parent space group	P 6/m No. 175
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 12.652 · b 12.652 · c 9.138 Å · α 90° · β 90° · γ 120°
Transition	22 K (−251 °C)
Measured at	15 K
Magnetic ions	U
Largest moment component	2.31 μ_B
Method	NSD and neutron polarimetry

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	0.0792	0.268	0.2319
Au2	Au	0.116	0.4944	0.153
Au3	Au	0.443	0.103	0.3343
Au4	Au	0.237	0.058	0.5
Au5	Au	0.864	0.973	0
Au6	Au	0.3333	0.6667	0.31
Au7	Au	0.3333	0.6667	0
U1	U	0.142	0.463	0.5	0.07	2.31	0	2.2758
U2	U	0.391	0.114	0	−1.28	0.34	0	1.4796
U3	U	0	0	0.304

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

P J Brown et al. J. Phys.: Condens. Matter (1997) · doi:10.1088/0953-8984/9/22/023

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.283_U14Au51.mcif from MAGNDATA · entry page

sha256 of this copy: ca3c72a6f1e612b96eeb4acae3f5d438779d46da16314b56f54f38f83304a2b0
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.283_U14Au51.mcif.