Research/Sitter/MAGNDATA / 0.1173_Ce2CoAl7Ge4.mcif

Ce₂CoAl₇Ge₄

MAGNDATA entry 0.1173 · 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 ≤ 1.9 K (−271 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C m′ m 2′ BNS 35.167
Point group	m′m2′
Parent space group	P 4 2₁ m No. 113
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.9158 · b 5.9158 · c 15.3635 Å · α 90° · β 90° · γ 90°
Transition	1.9 K (−271 °C)
Measured at	0.1 K
Magnetic ions	Ce
Largest moment component	0.374 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 C m′ m 2′ →

Atom sites · 17 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0	0	0
Ce1_1	Ce	0	0	0.7436	0.083	−0.374	0	0.3831
Ce1_2	Ce	0	0	0.2564	0.374	−0.083	0	0.3831
Ge1_1	Ge	0.5	0	0.7992
Ge1_2	Ge	0	0.5	0.2008
Ge2_1	Ge	0	0.5	0.8108
Ge2_2	Ge	0.5	0	0.1892
Ge3_1	Ge	0.281	0.781	0.5876
Ge3_2	Ge	0.781	0.719	0.4124
Al1_1	Al	0.708	0.792	0.5721
Al1_2	Al	0.792	0.292	0.4279
Al2_1	Al	0	0.5	0.6469
Al2_2	Al	0.5	0	0.3531
Al3_1	Al	0.7443	0.7557	0.9165
Al3_2	Al	0.7557	0.2557	0.0835
Al4_1	Al	0.2564	0.7564	0.9159
Al4_2	Al	0.7564	0.7436	0.0841

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

M. O. Ajeesh et al. Phys. Rev. B (2025) · doi:10.1103/73sf-r86t

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1173_Ce2CoAl7Ge4.mcif from MAGNDATA · entry page

sha256 of this copy: f8c71a93d3fb5c0227e180501f24a5eff8e0ecacac51d58e0f76231eaa2d3e15
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1173_Ce2CoAl7Ge4.mcif.