Research/Sitter/MAGNDATA / 2.4_Eu(Fe0.82Co0.18)As2.mcif

Eu(Fe_0.82Co_0.18)As₂

MAGNDATA entry 2.4 · source

noncollinear ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 17 K (−256 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C m m′ m′ BNS 65.486
Point group	m′m′m
Parent space group	I 4/m m m No. 139
Spins	coplanar · net moment 24.8 μ_B per cell
Propagation	[1/2 1/2 0] · [0 0 0] 2k
Cell	a 5.543 · b 5.543 · c 11.98 Å · α 90° · β 90° · γ 90°
Transition	17 K (−256 °C)
Measured at	4.5 K
Magnetic ions	Eu, Fe
Largest moment component	6.2 μ_B
Method	Moments in the figures and vesta files are not in a linear scale. Fe spins are oversized respect to Eu ones.

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 m m′ m′ →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Eu1_1	Eu	0	0	0	0	0	6.2	6.2
Eu1_2	Eu	0	0.5	0.5	0	0	6.2	6.2
Fe1_1	Fe	0.25	0.25	0.25	−0.15	0	0	0.15
Co1_1	Co	0.25	0.25	0.25
As1_1	As	0	0	0.362
As1_2	As	0	0.5	0.862

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

W.T. Jin et al. PHYSICAL REVIEW B (2013) · doi:10.1103/physrevb.88.214516

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.4_Eu(Fe0.82Co0.18)As2.mcif from MAGNDATA · entry page

sha256 of this copy: c6f21ea0e12a0fdf81abfe6a501bfbcbc30a17f2b416adb47e3ca8de0aca923e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.4_Eu(Fe0.82Co0.18)As2.mcif.