Research/Sitter/MAGNDATA / 1.482_Er2Fe2Si2C.mcif

Er₂Fe₂Si₂C

MAGNDATA entry 1.482 · 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 ≤ 2.6 K (−271 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_S 1 BNS 2.7
Parent space group	C 2/m No. 12
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 21.0084 · b 7.7846 · c 6.6557 Å · α 90° · β 129.06° · γ 90°
Transition	2.6 K (−271 °C)
Measured at	1.4 K
Magnetic ions	Er
Largest moment component	10.6 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_S 1 →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1	Er	0.2806	0	0.293	3.5	0	10.6	8.8235
Fe1	Fe	0.102	0	0.1
C1	C	0	0.25	0.5
Si1	Si	0.078	0	0.705

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

R.A. Susilo et al. PHYSICAL REVIEW B (2019) · doi:10.1103/PhysRevB.99.184426

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.482_Er2Fe2Si2C.mcif from MAGNDATA · entry page

sha256 of this copy: 8d7fe09173d6e24355f745ad405edc48c10fe9ce24d51c0e68dd5e4c90eca3c4
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.482_Er2Fe2Si2C.mcif.