Research/Sitter/MAGNDATA / 0.799_Sr2Co2O5.mcif

Sr₂Co₂O₅

MAGNDATA entry 0.799 · 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 ≤ 537 K (264 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_I n c 2 BNS 30.122
Point group	mm21′
Parent space group	I m a 2 No. 46
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 1 1] 1k
Cell	a 15.6376 · b 5.5644 · c 5.458 Å · α 90° · β 90° · γ 90°
Transition	537 K (264 °C)
Measured at	10 K
Magnetic ions	Co
Largest moment component	3.12 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 c 2 →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1	Sr	0.1104	0.0111	0.517
Co1	Co	0	0	0	0	0	3.12	3.12
Co2	Co	0.25	0.942	0.045	0	0	−2.88	2.88
O1	O	0.9951	0.2439	0.253
O2	O	0.1407	0.0408	0.018
O3	O	0.25	0.8705	0.641

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

A. Munoz et al. PHYSICAL REVIEW B (2008) · doi:10.1103/PhysRevB.78.054404

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.799_Sr2Co2O5.mcif from MAGNDATA · entry page

sha256 of this copy: e7f79ed3acabcd5240e059272bf721539f8b090b6f41db582fb88f73646b0371
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.799_Sr2Co2O5.mcif.