Research/Sitter/MAGNDATA / 2.68_FeGe2.mcif

FeGe₂

MAGNDATA entry 2.68 · 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 ≤ 270 K (−3 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P c′ c n BNS 56.367
Point group	m′mm
Parent space group	I 4/m c m No. 140
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1 1 1] · [0 0 0] 2k
Cell	a 5.899 · b 5.899 · c 4.941 Å · α 90° · β 90° · γ 90°
Transition	270 K (−3 °C)
Measured at	100 K
Magnetic ions	Fe
Largest moment component	0.595 μ_B
Method	NSD and 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′ c n →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ge1_1	Ge	0.158	0.658	0
Fe1_1	Fe	0	0	0.25	0.595	0.423	0	0.73

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

J. B. Forsyth et al. Philosophical Magazine (1964) · doi:10.1080/14786436408228489

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.68_FeGe2.mcif from MAGNDATA · entry page

sha256 of this copy: 803da44c1ebaf7581f6a19195f30085c85a0fed25881e659b44f6ad20ac078e4
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.68_FeGe2.mcif.