Research/Sitter/MAGNDATA / 0.1125_ErB4.mcif

Er₁B₄

MAGNDATA entry 0.1125 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

Spin group ¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 15.4 K (−258 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	A m m′ 2′ BNS 38.190
Point group	m′m2′
Parent space group	P 4/m b m No. 127
Spins	collinear · net moment 17.92 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 7.0779 · b 7.0779 · c 4.0037 Å · α 90° · β 90° · γ 90°
Transition	15.4 K (−258 °C)
Measured at	1.8 K
Magnetic ions	Er
Largest moment component	8.96 μ_B
Method	NSD

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 A m m′ 2′ →

Atom sites · 11 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1_1	Er	0.3193	0.8193	0	0	0	8.96	8.96
Er1_2	Er	0.1807	0.3193	0	0	0	8.96	8.96
Er1_3	Er	0.8193	0.6807	0	0	0	−8.96	8.96
B1	B	0	0	0.2045
B2_1	B	0.0849	0.5849	0.5
B2_2	B	0.4151	0.0849	0.5
B2_3	B	0.5849	0.9151	0.5
B3_1	B	0.1767	0.04	0.5
B3_2	B	0.8233	0.96	0.5
B3_3	B	0.96	0.1767	0.5
B3_4	B	0.04	0.8233	0.5

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

Simon Flury et al. PHYSICAL REVIEW B (2025) · doi:10.1103/m3wx-4v6k

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1125_ErB4.mcif from MAGNDATA · entry page

sha256 of this copy: 5f3ad4bb4a43027ee14c6e404c79635b7d4959b5b0348bb44ddfef585c4345e8
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1125_ErB4.mcif.

Er1B4

Symmetry

Source

Original file

Er₁B₄