Research/Sitter/MAGNDATA / 0.1020_EuCu2Sb2.mcif

Eu₁Cu₂Sb₂

MAGNDATA entry 0.1020 · 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 ¹4/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 5.1 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P m′ m n BNS 59.407
Point group	m′mm
Parent space group	P 4/n m m No. 129
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.481 · b 4.481 · c 10.805 Å · α 90° · β 90° · γ 90°
Transition	5.09 K (−268 °C)
Measured at	0.4 K
Magnetic ions	Eu
Largest moment component	7.08 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 m′ m n →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Eu1	Eu	0.25	0.25	0.2388	7.08	0	0	7.08
Cu1	Cu	0.75	0.25	0
Cu2	Cu	0.25	0.25	0.6389
Sb1	Sb	0.75	0.25	0.5
Sb2	Sb	0.25	0.25	0.8697

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

D. H. Ryan et al. J. Phys.: Condens. Matter (2015) · doi:10.1103/PhysRevB.75.104417

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1020_EuCu2Sb2.mcif from MAGNDATA · entry page

sha256 of this copy: 5ef1c8e928b025d6fc6be1c3d19cd227dffd11ea33743e6d6eea63971c56aab4
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1020_EuCu2Sb2.mcif.

Eu1Cu2Sb2

Symmetry

Source

Original file

Eu₁Cu₂Sb₂