Research/Sitter/MAGNDATA / 0.1040_CeAu0.8Cu0.2Ge.mcif

Ce₁Au_0.8Cu_0.2Ge₁

MAGNDATA entry 0.1040 · source

s-wave ferromagnet

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

Spin group ¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 7.5 K (−266 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C m c′ 2₁′ BNS 36.175
Point group	m′m2′
Parent space group	P 6₃ m c No. 186
Spins	collinear · net moment 3.8 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.4562 · b 7.7184 · c 7.8464 Å · α 90° · β 90° · γ 90°
Transition	7.5 K (−266 °C)
Measured at	1.5 K
Magnetic ions	Ce
Largest moment component	0.95 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 c′ 2₁′ →

Atom sites · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ce1	Ce	0	0	0.95	0	0	0.95
Au1	Au	0.3333	0.7871
Cu1	Cu	0.3333	0.7871
Ge1	Ge	0.3333	0.2416

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

S. Shin et al. J. Magn. Magn. Mater. (2022) · doi:10.1016/j.jmmm.2022.169147

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1040_CeAu0.8Cu0.2Ge.mcif from MAGNDATA · entry page

sha256 of this copy: a966614275613452abf2cf6f3926bf0821b7c3acbed8318089ea0010f443987e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1040_CeAu0.8Cu0.2Ge.mcif.

Ce1Au0.8Cu0.2Ge1

Symmetry

Source

Original file

Ce₁Au_0.8Cu_0.2Ge₁