Research/Sitter/MAGNDATA / 1.565_Pb2CoOsO6.mcif

Pb₂CoOsO₆

MAGNDATA entry 1.565 · 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 ≤ 45 K (−228 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_a c BNS 7.27
Parent space group	P 2₁/n No. 14
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 11.27302 · b 5.58361 · c 15.64642 Å · α 90° · β 89.815° · γ 90°
Transition	45 K (−228 °C)
Measured at	1.5 K
Magnetic ions	Co, Os
Largest moment component	1.89 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_a c →

Atom sites · 10 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0	0	0	−0.77	0	1.89	2.0385
Os1	Os	0	0	0.25	−0.77	0	1.89	2.0385
Pb1_1	Pb	0.0029	0.5127	0.1252
Pb1_2	Pb	0.247	0.0127	0.1248
O1_1	O	0.4661	0.9912	0.1296
O1_2	O	0.784	0.4912	0.1204
O2_1	O	0.1206	0.281	0.0181
O2_2	O	0.1293	0.781	0.2319
O3_1	O	0.1417	0.7651	0.0182
O3_2	O	0.1083	0.2651	0.2318

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. J. Princep et al. PHYSICAL REVIEW B (2020) · doi:10.1103/PhysRevB.102.104410

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.565_Pb2CoOsO6.mcif from MAGNDATA · entry page

sha256 of this copy: 59c0fa3875e9c11f94651651d7ac62dfb085974ed4a03fbc6e1794a5786da103
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.565_Pb2CoOsO6.mcif.