Research/Sitter/MAGNDATA / 1.370_Li2CuO2.mcif

Li₂CuO₂

MAGNDATA entry 1.370 · 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 ≤ 8.3 K (−265 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_I n n m BNS 58.404
Parent space group	I m m m No. 71
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 1 1] 1k
Cell	a 3.65447 · b 2.86022 · c 9.3774 Å · α 90° · β 90° · γ 90°
Transition	8.3 K (−265 °C)
Measured at	1.5 K
Magnetic ions	Cu
Largest moment component	0.96 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_I n n m →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Li1	Li	0.5	0	0.2869
Cu1	Cu	0	0.5	0.5	0.96	0	0	0.96
O1	O	0	0	0.3577

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

F. Sapina et al. Solid State Communications (1990) · doi:10.1016/0038-1098(90)90934-4

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.370_Li2CuO2.mcif from MAGNDATA · entry page

sha256 of this copy: d92c7cee9f67603228cdf3e51b8fe6f456e324f60d8a0a435d0e271674d66d0a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.370_Li2CuO2.mcif.