Research/Sitter/MAGNDATA / 0.222_CuMnAs.mcif

CuMnAs

MAGNDATA entry 0.222 · 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 ≤ 480 K (207 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P m′ m n BNS 59.407
Parent space group	P 4/n m m No. 129
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 3.8004 · b 3.8004 · c 6.3218 Å · α 90° · β 90° · γ 90°
Transition	480 K (207 °C)
Measured at	293 K
Magnetic ions	Mn
Largest moment component	3.6 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 m′ m n →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
As1	As	0	0.5	0.736
Cu1	Cu	0.5	0.5	0
Mn1	Mn	0	0.5	0.3363	0	−3.6	0	3.6

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. Wadley et al. Scientific Reports (2015) · doi:10.1038/srep17079

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.222_CuMnAs.mcif from MAGNDATA · entry page

sha256 of this copy: 1ceb2501a106975468215358d7aeab48905f16d80e206356e9f7922d38601463
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.222_CuMnAs.mcif.