Research/Sitter/MAGNDATA / 1.72_Sr2CoOsO6.mcif

Sr₂CoOsO₆

MAGNDATA entry 1.72 · 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 ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 108 K (−165 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_c 2/c BNS 15.90
Point group	2/m1′
Parent space group	I 4/m No. 87
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 7.8112 · b 7.752 · c 7.9987 Å · α 90° · β 90° · γ 90°
Transition	108 K (−165 °C)
Measured at	70 K
Magnetic ions	Co, Os
Largest moment component	1.17 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 C_c 2/c →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1	Sr	0.25	0.25	0.2505
Co1	Co	0	0	0	1.17	1.09	0	1.5991
Os1	Os	0	0	0.5	0.51	0.48	0	0.7004
O1	O	0.0066	0	0.2554
O2_1	O	0.0182	0.256	0
O2_2	O	0.2567	0.0373	−0.0068

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

B. Yan et al. PHYSICAL REVIEW LETTERS (2014) · doi:10.1103/physrevlett.112.147202

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.72_Sr2CoOsO6.mcif from MAGNDATA · entry page

sha256 of this copy: 2cafb549244e2541ebe6f340ce58f1cb1e355cb22eacb812e343023b2c98be46
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.72_Sr2CoOsO6.mcif.