Research/Sitter/MAGNDATA / 1.405_La2CuO4.mcif

La₂CuO₄

MAGNDATA entry 1.405 · 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 ≤ 316 K (43 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_A c c n BNS 56.374
Parent space group	B m e b No. 64
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 0 0] 1k
Cell	a 5.3568 · b 5.4058 · c 13.1432 Å · α 90° · β 90° · γ 90°
Transition	316 K (43 °C)
Measured at	10 K
Magnetic ions	Cu
Largest moment component	0.42 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_A c c n →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1	La	0	0.9933	0.3614
Cu1	Cu	0	0	0	0	0.42	0	0.42
O1	O	0.25	0.25	0.9928
O2	O	0	0.0341	0.1837

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

M. Reehuis et al. PHYSICAL REVIEW B (2006) · doi:10.1103/PhysRevB.73.144513

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.405_La2CuO4.mcif from MAGNDATA · entry page

sha256 of this copy: 536263e77b4e2084bc776e6846bda53c526037731f9324a95beb39979eb6433e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.405_La2CuO4.mcif.