Research/Sitter/MAGNDATA / 1.578_KErSe2.mcif

KErSe₂

MAGNDATA entry 1.578 · 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 ¹1̄ × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 0.2 K (−273 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_c 2/m BNS 12.63
Parent space group	R 3 m No. 166
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 8.2906 · b 4.1453 · c 45.42 Å · α 90° · β 90° · γ 120°
Transition	0.2 K (−273 °C)
Measured at	0.045 K
Magnetic ions	Er
Largest moment component	3.06 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 C_c 2/m →

Atom sites · 3 sites · CSV

site	element	z	m_a	m_b	m_c	\|m\| (μ_B)
K1	K	0
Er1	Er	0.25	0	3.06	0	3.06
Se1	Se	0.1177

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

J. Xing et al. PHYSICAL REVIEW B (2021) · doi:10.1103/PhysRevB.103.144413

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.578_KErSe2.mcif from MAGNDATA · entry page

sha256 of this copy: a1021881c1df841a57f9f59a2422ad63715e7f0da979ec819276d21c626fb30d
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.578_KErSe2.mcif.