Research/Sitter/MAGNDATA / 2.29_Mn3O4.mcif

Mn₃O₄

MAGNDATA entry 2.29 · source

noncollinear ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 33 K (−240 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P b′ c′ n BNS 60.422
Parent space group	I4₁/a m d No. 141
Spins	coplanar · net moment 15.04 μ_B per cell
Propagation	[0 0 0] · [0 1/2 0] 2k
Cell	a 5.71 · b 11.42 · c 9.35 Å · α 90° · β 90° · γ 90°
Transition	33 K (−240 °C)
Measured at	4.7 K
Magnetic ions	Mn
Largest moment component	4.34 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 P b′ c′ n →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0.375	0.125	0	4.34	0	4.34
Mn2_1	Mn	0	0	0.5	0	−1.38	3.37	3.6416
Mn2_2	Mn	0.25	0.375	0.75	0	−1.08	3.07	3.2544
Mn2_3	Mn	0.5	0.25	0	0	−1.38	3.37	3.6416
O1_1	O	0	0.2354	0.2584
O1_2	O	0.7792	0.375	0.5084
O1_3	O	0.7208	0.375	0.9916
O1_4	O	0.5	0.4854	0.7584

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

Jensen, G.B. et al. J. Phys. C: Solid State Phys. (1974) · doi:10.1088/0022-3719/7/2/019

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.29_Mn3O4.mcif from MAGNDATA · entry page

sha256 of this copy: eda43879a5917f85a7595379b9f3863b01020a8511ee0646f840b6c3bc336014
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.29_Mn3O4.mcif.