Research/Sitter/MAGNDATA / 0.1102_La4Co3O9.mcif

La₄Co₃O₉

MAGNDATA entry 0.1102 · 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 ≤ 303 K (30 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P n m′ a BNS 62.444
Point group	m′mm
Parent space group	P n m a No. 62
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.4356 · b 28.46 · c 5.6467 Å · α 90° · β 90° · γ 90°
Transition	303 K (30 °C)
Measured at	10 K
Magnetic ions	Co
Largest moment component	3 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 n m′ a →

Atom sites · 9 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0.212	0.25	0.551	2.6	0	0	2.6
Co2	Co	0.251	0.11	0.5	−3	0	0	3
La1	La	0.25	0.0492	0.9863
La2	La	0.248	0.1724	0.0157
O1	O	0.353	0.25	0.889
O2	O	0.26	0.03	0.555
O3	O	0.995	0.1045	0.245
O4	O	0.997	0.1194	0.758
O5	O	0.248	0.1877	0.431

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

Ole Henrik Hansteen et al. J. Mater. Chem., (1998)

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1102_La4Co3O9.mcif from MAGNDATA · entry page

sha256 of this copy: fb94834edce179ab4cc1b9a3ade6353cc4d49e750d5d78dfe8309a9c6602693a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1102_La4Co3O9.mcif.