Research/Sitter/MAGNDATA / 1.355_DyGe3.mcif

DyGe₃

MAGNDATA entry 1.355 · 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 ≤ 24 K (−249 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_a 2₁/m BNS 11.55
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 -1/2 1/3] 1k
Cell	a 8.0584 · b 10.5484 · c 11.6902 Å · α 90° · β 90° · γ 79.047°
Transition	24 K (−249 °C)
Measured at	8 K
Magnetic ions	Dy
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/m →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Dy1	Dy	0.785	0.831	0.083	0	0	8.2	8.2
Dy2	Dy	0.712	0.158	0.25	0	0	−8.1	8.1
Ge1	Ge	0.983	0.079	0.083
Ge2	Ge	0.509	0.916	0.25
Ge3	Ge	0.627	0.388	0.083
Ge4	Ge	0.857	0.621	0.25
Ge5	Ge	0.593	0.615	0.083
Ge6	Ge	0.935	0.368	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 Magnetism and Magnetic Materials (1996) · doi:10.1016/0304-8853(95)00578-1

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.355_DyGe3.mcif from MAGNDATA · entry page

sha256 of this copy: 6be8bb946598e3c9791d139813522d62b38c807df02616d33f6abaebf48fd1b1
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.355_DyGe3.mcif.