Research/Sitter/MAGNDATA / 0.482_SrMn2As2.mcif

SrMn₂As₂

MAGNDATA entry 0.482 · 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 ¹3̄¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 118 K (−155 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C 2′/m BNS 12.60
Parent space group	P 3 m 1 No. 164
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.29 · b 4.29 · c 7.24 Å · α 90° · β 90° · γ 120°
Transition	118 K (−155 °C)
Measured at	5 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 C 2′/m →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1	Sr	0	0	0
Mn1	Mn	0.3333	0.6667	0.6231	3.6	0	0	3.6
As1	As	0.3333	0.6667	0.2667

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. Das et al. J. Phys.: Condens. Matter (2017) · doi:10.1088/0953-8984/29/3/035802

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.482_SrMn2As2.mcif from MAGNDATA · entry page

sha256 of this copy: 0c6b148b244b8ee3f87bdf5e31db7056a1f8269ba09acf979c0fe09c8dcd5527
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.482_SrMn2As2.mcif.