Research/Sitter/MAGNDATA / 1.185_GeCu2O4.mcif

GeCu₂O₄

MAGNDATA entry 1.185 · source

p-wave magnet

Coplanar spins, no net moment, and a translation that reverses every spin: spin splitting that is odd in momentum (p-wave).

ordered ≤ 32.2 K (−241 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	I_c 42d BNS 122.338
Point group	42m1′
Parent space group	I 4₁/a m d No. 141
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/2 1/2 1/2] 1k
Cell	a 11.186 · b 11.186 · c 18.79 Å · α 90° · β 90° · γ 90°
Transition	32.2 K (−241 °C)
Measured at	2 K
Magnetic ions	Cu
Largest moment component	0.626 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 I_c 42d →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Cu1	Cu	0	0	0	0.626	0.626	0	0.8853
Ge1_1	Ge	0	0.125	0.1875
Ge1_2	Ge	0	0.375	0.3125
O1_1	O	0	0.2455	0.367
O1_2	O	0.8795	0.375	0.492

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

T. Zou et al. PHYSICAL REVIEW B (2016) · doi:10.1103/PhysRevB.94.214406

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.185_GeCu2O4.mcif from MAGNDATA · entry page

sha256 of this copy: db56652cbcb678e033e654a36ef25f70d52a7d6170d2f0fc2fdc76bc3380258d
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.185_GeCu2O4.mcif.