Research/Sitter/MAGNDATA / 1.30_BaCo2V2O8.mcif

BaCo₂V₂O₈

MAGNDATA entry 1.30 · 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 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 c a BNS 54.352
Point group	mmm1′
Parent space group	I 4₁/a c d No. 142
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 0 0] 1k
Cell	a 12.404 · b 12.404 · c 8.375 Å · α 90° · β 90° · γ 90°
Transition	5 K (−268 °C)
Measured at	2 K
Magnetic ions	Co
Largest moment component	2.267 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_I c c a →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ba	Ba	0	0.25	0.375
V1	V	0.08	0	0.25
V2	V	0.25	0.83	0.5
Co	Co	0.169	0.419	0.125	0	0	2.267	2.267
O11	O	0.1587	0.075	0.3817
O12	O	0.175	0.9087	0.6317
O21	O	0.4985	0.0873	0.3487
O22	O	0.1627	0.2485	0.5987

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

E. Canevet et al. PHYSICAL REVIEW B (2013) · doi:10.1103/physrevb.87.054408

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.30_BaCo2V2O8.mcif from MAGNDATA · entry page

sha256 of this copy: 974251ec517d907db3941f40fc3a54772494ce501e08a79c417ecd25a66b7b5e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.30_BaCo2V2O8.mcif.