Research/Sitter/MAGNDATA / 2.54_Sr2Cr3As2O2.mcif

Sr₂Cr₃As₂O₂

MAGNDATA entry 2.54 · 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 ≤ 291 K (18 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_C 2₁/c BNS 14.84
Parent space group	I 4/m m m No. 139
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1 1 1] · [1/2 1/2 0] 2k
Cell	a 5.6553 · b 5.6553 · c 18.7151 Å · α 90° · β 90° · γ 90°
Transition	291 K (18 °C)
Measured at	4 K
Magnetic ions	Cr
Largest moment component	3.1 μ_B
Method	NPD

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_C 2₁/c →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1	Sr	0.5	0.5	0.4113
As1	As	0.5	0.5	0.8308
Cr1	Cr	0.5	0.5	0	0	0	3.1	3.1
Cr2_1	Cr	0.25	0.75	0.25	−1.55	−1.55	0	2.192
Cr2_2	Cr	0.75	0.75	0.75	1.55	1.55	0	2.192
O1_1	O	0.25	0.75	0
O1_2	O	0.75	0.75	0

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

J. Liu et al. PHYSICAL REVIEW B (2018) · doi:10.1103/PhysRevB.98.134416

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.54_Sr2Cr3As2O2.mcif from MAGNDATA · entry page

sha256 of this copy: 2fb42f0eb7f54a9db49284bb43a9e5109fb5070e43de1d06f3a7adc178dcc0bd
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.54_Sr2Cr3As2O2.mcif.