Research/Sitter/MAGNDATA / 1.159_Li2Ni(WO4)2.mcif

Li₂Ni(WO₄)₂

MAGNDATA entry 1.159 · 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 ¹1̄ × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 13 K (−260 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_S 1 BNS 2.7
Point group	11′
Parent space group	P 1 No. 2
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 9.814 · b 5.602 · c 11.6806 Å · α 70.92° · β 88.52° · γ 115.45°
Transition	13 K (−260 °C)
Measured at	2 K
Magnetic ions	Ni
Largest moment component	1.4 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)
W1	W	0.1321	0.5337	0.3325
Ni1	Ni	0.25	0	0	1.3	0	1.4	1.9349
O1	O	0.4839	0.2421	0.4616
O2	O	0.2568	0.7499	0.405
O3	O	0.2741	0.7218	0.165
O4	O	0.0219	0.7276	0.2715
Li1	Li	0.0135	0.072	0.127

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

S.K. Karna et al. PHYSICAL REVIEW B (2015) · doi:10.1103/PhysRevB.92.014413

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.159_Li2Ni(WO4)2.mcif from MAGNDATA · entry page

sha256 of this copy: a6ff8be011e526498fadb9894c252e561c6d8530ce1b66bf33b2387e598fb338
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.159_Li2Ni(WO4)2.mcif.