Research/Sitter/MAGNDATA / 0.463_Co3O4.mcif

Co₃O₄

MAGNDATA entry 0.463 · 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 ¹m¹3̄¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 40 K (−233 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I 4₁′/a′ m′ d BNS 141.556
Parent space group	F d 3 m No. 227
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.065 · b 8.065 · c 8.065 Å · α 90° · β 90° · γ 90°
Transition	40 K (−233 °C)
Measured at	4.2 K
Magnetic ions	Co
Largest moment component	3.26 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′ m′ d →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0	0	0	0	0	3.26	3.26
Co2	Co	0.625	0.625	0.625
O1	O	0.3881	0.3881	0.3881

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

W. Roth et al. J. Phys. Chem. Solids (1964) · doi:10.1016/0022-3697(64)90156-8

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.463_Co3O4.mcif from MAGNDATA · entry page

sha256 of this copy: 99f9d07263c9875f85d7ff4d1ae7d2fd86f6704b62e758d4a2725f17b6baf34b
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.463_Co3O4.mcif.