Research/Sitter/MAGNDATA / 0.236_CaFe4Al8.mcif

CaFe₄Al₈

MAGNDATA entry 0.236 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 180 K (−93 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I 4′/m m m′ BNS 139.535
Parent space group	I4/m m m No. 139
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.7578 · b 8.7578 · c 5.06328 Å · α 90° · β 90° · γ 90°
Transition	180 K (−93 °C)
Measured at	4 K
Magnetic ions	Fe
Largest moment component	0.712 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 I 4′/m m m′ →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ca1	Ca	0	0	0
Fe1	Fe	0.25	0.25	0.25	0.037	0.037	0.712	0.7139
Al1	Al	0.3425	0	0
Al2	Al	0.2746	0.5	0

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

V. Gvozdetskyi et al. Inorg. Chem. (2018) · doi:10.1021/acs.inorgchem.8b00208

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.236_CaFe4Al8.mcif from MAGNDATA · entry page

sha256 of this copy: 7d8b538cc75d09e4b81b04c4931323a9b5d78ad3bf914a3155d9979727b1503c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.236_CaFe4Al8.mcif.