Research/Sitter/MAGNDATA / 1.256_BaNi2V2O8.mcif

BaNi₂V₂O₈

MAGNDATA entry 1.256 · 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 ¹3̄ × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 50 K (−223 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_S 1 BNS 2.7
Parent space group	R 3 No. 148
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 3/2] 1k
Cell	a 5.0205 · b 5.0205 · c 44.4762 Å · α 90° · β 90° · γ 120°
Transition	50 K (−223 °C)
Measured at	8 K
Magnetic ions	Ni
Largest moment component	1.55 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_S 1 →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ba1	Ba	0	0	0
Ni1	Ni	0	0	0.0848	1.55	0	0	1.55
V1	V	0	0	0.2123
O1	O	0	0	0.1746
O2_1	O	0.6598	0.006	0.1098
O2_2	O	0.994	0.6538	0.1098
O2_3	O	0.3462	0.3402	0.1098

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

N. Rogado et al. Phys. Rev. B (2002) · doi:10.1103/PhysRevB.65.144443

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.256_BaNi2V2O8.mcif from MAGNDATA · entry page

sha256 of this copy: 46edd8592dde40c84dc7443a9aaa4fec95128d9a0dd9b8955e59b55f6ad2499c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.256_BaNi2V2O8.mcif.