Research/Sitter/MAGNDATA / 1.379_ErNiGe.mcif

ErNiGe

MAGNDATA entry 1.379 · 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 ≤ 2.9 K (−270 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_a 2₁/c BNS 14.80
Parent space group	P n m a No. 62
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 1/2 0] 1k
Cell	a 6.801 · b 8.376 · c 7.243 Å · α 90° · β 90° · γ 90°
Transition	2.9 K (−270 °C)
Measured at	1.65 K
Magnetic ions	Er
Largest moment component	8.2 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_a 2₁/c →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1	Er	0	0.125	0.7048	3.82	8.2	0	9.0461
Ni1	Ni	0.1935	0.125	0.0983
Ge1	Ge	0.3065	0.125	0.4017

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. Andre et al. Journal of Magnetism and Magnetic Materials (1993) · doi:10.1016/0304-8853(93)90200-L

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.379_ErNiGe.mcif from MAGNDATA · entry page

sha256 of this copy: d54304ceba3d3e5938991163691e73e7b0c98ff10e4b84646ff0b14f08c773b6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.379_ErNiGe.mcif.