Research/Sitter/MAGNDATA / 0.217_LiCrGe2O6.mcif

LiCrGe₂O₆

MAGNDATA entry 0.217 · source

antiferromagnet

No net magnetisation, and up and down sublattices are related by a shift or by inversion, so the bands stay spin-degenerate: a conventional antiferromagnet.

Spin group ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 4.8 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 2₁′/c BNS 14.77
Parent space group	P 2₁/c No. 14
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 9.7904 · b 8.7159 · c 5.3364 Å · α 90° · β 108.93° · γ 90°
Transition	4.8 K (−268 °C)
Measured at	1.7 K
Magnetic ions	Cr
Largest moment component	2.41 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 P 2₁′/c →

Atom sites · 10 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Li1	Li	0.2577	0.0133	0.2192
Cr1	Cr	0.2513	0.6591	0.2121	2.41	0	1.24	2.3252
Ge1	Ge	0.0474	0.3438	0.2756
Ge2	Ge	0.5547	0.8418	0.229
O11	O	0.8574	0.3327	0.1732
O12	O	0.3641	0.8311	0.1041
O21	O	0.1146	0.5262	0.2839
O22	O	0.6312	0.0065	0.3872
O31	O	0.1175	0.2911	0.6097
O32	O	0.6139	0.688	0.4547

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

G. Nenert et al. PHYSICAL REVIEW B (2010) · doi:10.1103/PhysRevB.82.024429

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.217_LiCrGe2O6.mcif from MAGNDATA · entry page

sha256 of this copy: d763a716d028647b7931cbc50ee732c998174a0c4564927d9acc0c2e1abffc35
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.217_LiCrGe2O6.mcif.