Research/Sitter/MAGNDATA / 1.323_CoGeO3.mcif

CoGeO₃

MAGNDATA entry 1.323 · source

noncollinear antiferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

ordered ≤ 32.5 K (−241 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_C 2₁/c BNS 14.84
Parent space group	C 2/c No. 15
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 1 0] 1k
Cell	a 9.6587 · b 8.9878 · c 5.1701 Å · α 90° · β 101.24° · γ 90°
Transition	32.5 K (−241 °C)
Measured at	4 K
Magnetic ions	Co
Largest moment component	4.15 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_C 2₁/c →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0	0.9067	0.25	−0.96	0	2.54	2.8851
Co2	Co	0	0.2686	0.25	2.26	0	4.15	4.3213
Ge1	Ge	0.3011	0.0941	0.2144
O1	O	0.1182	0.0909	0.1357
O2	O	0.3824	0.2445	0.3841
O3	O	0.3606	0.0679	0.9091

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

G.J. Redhammer et al. Phys Chem Minerals (2010) · doi:10.1007/s00269-009-0335-x

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.323_CoGeO3.mcif from MAGNDATA · entry page

sha256 of this copy: 736c89017c45473d7c2d446c3b11c909aa24a29d19cc969fbec37a848e80ded2
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.323_CoGeO3.mcif.