Research/Sitter/MAGNDATA / 1.403_La2CoO4.mcif

La₂CoO₄

MAGNDATA entry 1.403 · 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 ≤ 275 K (2 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_C m n a BNS 53.335
Parent space group	C m c e No. 64
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 0 0] 1k
Cell	a 5.488 · b 12.548 · c 5.49 Å · α 90° · β 90° · γ 90°
Transition	275 K (2 °C)
Measured at	150 K
Magnetic ions	Co
Largest moment component	2.9 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_C m n a →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1	La	0	0.3612	0.0003
Co1	Co	0	0	0	2.9	0	0	2.9
O1	O	0.25	0.0089	0.25
O2	O	0	0.162	0.0063

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

K. Yamada et al. PHYSICAL REVIEW 8 (1989) · doi:10.1103/PhysRevB.39.2336

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.403_La2CoO4.mcif from MAGNDATA · entry page

sha256 of this copy: a823f6f1c8a5250a0b86d4ee35791a90ef4bca9a62c442591efd87c87f3d6551
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.403_La2CoO4.mcif.