Research/Sitter/MAGNDATA / 0.330_ErGe3.mcif

ErGe₃

MAGNDATA entry 0.330 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 7 K (−266 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 2₁/m′ BNS 11.53
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 3.9968 · b 20.659 · c 3.8843 Å · α 90° · β 90° · γ 90°
Transition	7 K (−266 °C)
Measured at	1.5 K
Magnetic ions	Er
Largest moment component	8.11 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/m′ →

Atom sites · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1	Er	0.4183	0.25	8.11	−2.17	0	8.3953
Ge1	Ge	0.0424	0.25
Ge2	Ge	0.6922	0.25
Ge3	Ge	0.8126	0.25

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

P. Schobinger-Papamantellos et al. Journal of Alloys and Compounds (1996) · doi:10.1016/0925-8388(95)01949-9

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.330_ErGe3.mcif from MAGNDATA · entry page

sha256 of this copy: 0d087306eb9d9d6e4bc8faeefa79ac708d135a89e7e65ca8b6562ece8dec717a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.330_ErGe3.mcif.