Research/Sitter/MAGNDATA / 0.311_CoGeO3.mcif

CoGeO₃

MAGNDATA entry 0.311 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 34 K (−239 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P b′ c a BNS 61.435
Parent space group	P b c a No. 61
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 18.8177 · b 9.0105 · c 5.3715 Å · α 90° · β 90° · γ 90°
Transition	34 K (−239 °C)
Measured at	4 K
Magnetic ions	Co
Largest moment component	3.2 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 b′ c a →

Atom sites · 10 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0.1227	0.3435	0.3574	1.12	0.3	3.09	3.3004
Co2	Co	0.3785	0.4895	0.3406	−2.24	0.98	−3.2	4.0272
Ge1	Ge	0.2714	0.3443	0.0395
Ge2	Ge	0.4708	0.3374	0.8012
O1	O	0.1796	0.3382	0.0238
O2	O	0.3116	0.5147	0.0464
O3	O	0.307	0.2153	0.8283
O4	O	0.5637	0.3375	0.8089
O5	O	0.4307	0.4883	0.668
O6	O	0.4439	0.1807	0.6193

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

⬇ 0.311_CoGeO3.mcif from MAGNDATA · entry page

sha256 of this copy: bbbc371ee9a56b574cafbcc3a272f7a69091712f0ebf9b8016bb9bbc33e7fed6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.311_CoGeO3.mcif.