Research/Sitter/MAGNDATA / 1.622_CoGeO3.mcif

CoGeO₃

MAGNDATA entry 1.622 · 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 ≤ 33.5 K (−240 °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	[1 0 0] 1k
Cell	a 9.692 · b 9.018 · c 5.181 Å · α 90° · β 101.17° · γ 90°
Transition	33.5 K (−240 °C)
Measured at	3 K
Magnetic ions	Co
Largest moment component	4.27 μ_B
Method	NSD

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	0.9077	0.25	0.98	0	−2.51	2.8659
Co2	Co	0	0.2694	0.25	−2.13	0	−4.27	4.387
Ge1	Ge	0.3	0.0939	0.2153
O1	O	0.1187	0.0926	0.1351
O2	O	0.3831	0.2421	0.3888
O3	O	0.3588	0.0665	0.9099

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

H. Guo et al. PHYSICAL REVIEW RESEARCH (2021) · doi:10.1103/PhysRevResearch.3.L032037

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.622_CoGeO3.mcif from MAGNDATA · entry page

sha256 of this copy: e514ad01659d103961f7540c96cf90a464bc727bf7a463ca3905a1e0f275be52
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.622_CoGeO3.mcif.