Research/Sitter/MAGNDATA / 1.789_Na3Ni2BiO6.mcif

Na₃Ni₂Bi₁O₆

MAGNDATA entry 1.789 · 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 ≤ 10.4 K (−263 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_C 2₁/m BNS 11.57
Point group	2/m1′
Parent space group	C 2/m No. 12
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 1 0] 1k
Cell	a 5.3998 · b 9.3518 · c 5.68 Å · α 90° · β 108.56° · γ 90°
Transition	10.4 K (−263 °C)
Measured at	2.8 K
Magnetic ions	Ni
Largest moment component	2.32 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/m →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Na1	Na	0	0.5	0.5
Na2	Na	0	0.836	0.5
O1	O	0.2263	0.8403	0.2039
O2	O	0.7486	0	0.213
Bi1	Bi	0	0	0
Ni1	Ni	0	0.6667	0	0.71	0	2.32	2.1995
Ni2	Ni	0	0	0
Bi2	Bi	0	0.6667	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

E. M. Seibel et al. Inorg. Chem. (2013) · doi:10.1021/ic402131e

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.789_Na3Ni2BiO6.mcif from MAGNDATA · entry page

sha256 of this copy: 3ba80c7d74821ab6c48bcbfcbc6c9bc4ff505ce8b66dd267fff346dcae309061
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.789_Na3Ni2BiO6.mcif.

Na3Ni2Bi1O6

Symmetry

Source

Original file

Na₃Ni₂Bi₁O₆