Research/Sitter/MAGNDATA / 1.71_SrCo2V2O8.mcif

SrCo₂V₂O₈

MAGNDATA entry 1.71 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 5.2 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_I c a 2₁ BNS 29.110
Point group	mm21′
Parent space group	I 4₁c d No. 110
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 1 1] 1k
Cell	a 12.267 · b 12.267 · c 8.424 Å · α 90° · β 90° · γ 90°
Transition	5.2 K (−268 °C)
Measured at	1.5 K
Magnetic ions	Co
Largest moment component	2.25 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_I c a 2₁ →

Atom sites · 14 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1_1	Sr	0	0	0
Sr1_2	Sr	0	0.5	0.25
Co1_1	Co	0.3292	0.3335	0.2212	0	0	2.25	2.25
Co1_2	Co	0.6665	0.8292	0.4712	0	0	2.25	2.25
V1_1	V	0.2608	0.08	0.0934
V1_2	V	0.92	0.7608	0.3434
O1_1	O	0.145	0.501	0.002
O1_2	O	0.499	0.645	0.252
O2_1	O	0.344	0.668	0.477
O2_2	O	0.332	0.844	0.727
O3_1	O	0.16	0.684	0.713
O3_2	O	0.316	0.66	0.963
O4_1	O	0.324	0.498	0.191
O4_2	O	0.502	0.824	0.441

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

A.K. Bera et al. PHYSICAL REVIEW B (2014) · doi:10.1103/physrevb.89.094402

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.71_SrCo2V2O8.mcif from MAGNDATA · entry page

sha256 of this copy: 056353e156410a45113348f358e692642358bc0ccd8c7bbda9c003c106829075
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.71_SrCo2V2O8.mcif.