Research/Sitter/MAGNDATA / 1.208_UAs.mcif

UAs

MAGNDATA entry 1.208 · 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 ≤ 124 K (−149 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 9 properties

Magnetic group	P_I4/mnc BNS 128.410
Parent space group	F m 3 m No. 225
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1] 1k
Cell	a 5.779 · b 5.779 · c 5.779 Å · α 90° · β 90° · γ 90°
Transition	124 K (−149 °C)
Magnetic ions	U
Largest moment component	1.9 μ_B
Method	Taken from a review article

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_I4/mnc →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
As1	As	0.5	0.5	0.5
U1	U	0	0	0	0	0	1.9	1.9

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

G. Lander et al. Physica B (1995) · doi:10.1016/0921-4526(95)00021-Z

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.208_UAs.mcif from MAGNDATA · entry page

sha256 of this copy: a7c366fd3a141fe4dad8573b2235a276043c9819f5447858b9b85c2998190d89
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.208_UAs.mcif.