Research/Sitter/MAGNDATA / 1.160_UP.mcif

UP

MAGNDATA entry 1.160 · 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 ≤ 122 K (−151 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_I 4/m n c BNS 128.410
Point group	4/mmm1′
Parent space group	F m 3m No. 225
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1] 1k
Cell	a 5.589 · b 5.589 · c 5.589 Å · α 90° · β 90° · γ 90°
Transition	122 K (−151 °C)
Magnetic ions	U
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 P_I 4/m n c →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
P1	P	0.5	0.5	0.5
U1	U	0	0	0	0	0	1.7	1.7

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. Burlet et al. Solid State Comm. (1985) · doi:10.1016/0038-1098(85)90132-2

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.160_UP.mcif from MAGNDATA · entry page

sha256 of this copy: 0a6dbf7a1e78316e8149503556db49540653f3a8a673b675fddc86ead9c9cec9
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.160_UP.mcif.