Research/Sitter/MAGNDATA / 0.1011_FeMn2O4.mcif

FeMn₂O₄

MAGNDATA entry 0.1011 · source

noncollinear ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 65 K (−208 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	I m m′ a′ BNS 74.559
Point group	m′m′m
Parent space group	I 4₁/a m d No. 141
Spins	coplanar · net moment 8 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.8945 · b 5.8945 · c 8.8855 Å · α 90° · β 90° · γ 90°
Transition	65 K (−208 °C)
Measured at	10 K
Magnetic ions	Fe, Mn
Largest moment component	4.65 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 m m′ a′ →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0.75	0.125	4.65	0	0	4.65
Fe1	Fe	0	0.75	0.125	4.65	0	0	4.65
Fe2_1	Fe	0	0	0.5	−2.89	0	0	2.89
Fe2_2	Fe	0.25	0.75	0.75	−2.76	0	−1.31	3.0551
Mn2_1	Mn	0	0	0.5	−2.89	0	0	2.89
Mn2_2	Mn	0.25	0.75	0.75	−2.76	0	−1.31	3.0551
O1_1	O	0	0.474	0.261
O1_2	O	0.775	0.75	0.511

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

Q. Zhang et al. Chem. Mater. (2023) · doi:10.1021/acs.chemmater.2c03182

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1011_FeMn2O4.mcif from MAGNDATA · entry page

sha256 of this copy: 78e63183a54e84417368c96983629f8982dbb47ba42bbe23d3cce6365c9b8d27
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1011_FeMn2O4.mcif.