Research/Sitter/MAGNDATA / 1.70_CoV2O6.mcif

CoV₂O₆

MAGNDATA entry 1.70 · 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 ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 15 K (−258 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_c 2/c BNS 15.90
Point group	2/m1′
Parent space group	C 2/m No. 12
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 1 1/2] 1k
Cell	a 9.2291 · b 3.5027 · c 13.1944 Å · α 90° · β 112.08° · γ 90°
Transition	15 K (−258 °C)
Measured at	4 K
Magnetic ions	Co
Largest moment component	4.24 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 C_c 2/c →

Atom sites · 5 sites · CSV

site	element	x	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0	0	2.2	0	4.24	3.9755
V1	V	0.809	0.1715
O1	O	0.6536	0.0553
O2	O	0.9667	0.1389
O3	O	0.6912	0.281

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

M. Markkula et al. Journal of Solid State Chemistry (2012) · doi:10.1016/j.jssc.2012.04.029

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.70_CoV2O6.mcif from MAGNDATA · entry page

sha256 of this copy: e1d5dcbd63710cb885ee2f5ba3b09e5084f099d8388aa80befbc932c5a5b1329
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.70_CoV2O6.mcif.