Research/Sitter/MAGNDATA / 0.284_KOsO4.mcif

KOsO₄

MAGNDATA entry 0.284 · 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 ¹4/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 35 K (−238 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I 4₁′/a′ BNS 88.85
Parent space group	I 4₁/a No. 88
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.6759 · b 5.6759 · c 12.7191 Å · α 90° · β 90° · γ 90°
Transition	35 K (−238 °C)
Measured at	1.5 K
Magnetic ions	Os
Largest moment component	0.46 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 I 4₁′/a′ →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
K1	K	0	0.25	0.625
Os1	Os	0	0.25	0.125	0	0	0.46	0.46
O1	O	0.1196	0.0214	0.1978

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

S. Injac et al. Phys. Chem. Chem. Phys. (2019) · doi:10.1039/c9cp00448c

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.284_KOsO4.mcif from MAGNDATA · entry page

sha256 of this copy: e3e2e13e0ee41792eca8e9d018b0e1859af30ea57e31fb9607736778d2457927
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.284_KOsO4.mcif.