Research/Sitter/MAGNDATA / 0.1194_CoFe2O4.mcif

CoFe₂O₄

MAGNDATA entry 0.1194 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

Spin group ¹m¹3̄¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

Structure · 10 properties

Magnetic group	I 4₁/a m′ d′ BNS 141.557
Point group	4/mm′m′
Parent space group	F d 3 m No. 227
Spins	collinear · net moment 59.2 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.3901 · b 8.3901 · c 8.3901 Å · α 90° · β 90° · γ 90°
Measured at	300 K
Magnetic ions	Co, Fe
Largest moment component	3.6 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 I 4₁/a m′ d′ →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co1	Co	0.125	0.125	0.125	0	0	−3.5	3.5
Fe1	Fe	0.125	0.125	0.125	0	0	−3.5	3.5
Co2	Co	0.5	0.5	0.5	0	0	3.6	3.6
Fe2	Fe	0.5	0.5	0.5	0	0	3.6	3.6
O1	O	0.2563	0.2563	0.2563

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

Henrik L. Andersen et al. CrystEngComm (2025) · doi:10.1039/d4ce01001a

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1194_CoFe2O4.mcif from MAGNDATA · entry page

sha256 of this copy: 0ca86999cf5ed4cdfbcfb5068d00e88069fc7003a53863b0fd4ca81b88cf51ba
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1194_CoFe2O4.mcif.