Research/Sitter/MAGNDATA / 1.1_Mn3O4.mcif

Mn₃O₄

MAGNDATA entry 1.1 · source

antiferromagnet

No net magnetisation, and up and down sublattices are related by a shift or by inversion, so the bands stay spin-degenerate: a conventional antiferromagnet.

Spin group ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 210 K (−63 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_c n m a BNS 62.452
Point group	mmm1′
Parent space group	P b c m No. 57
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 0] 1k
Cell	a 6.064 · b 9.842 · c 9.568 Å · α 90° · β 90° · γ 90°
Transition	210 K (−63 °C)
Measured at	60 K
Magnetic ions	Mn
Largest moment component	3.49 μ_B
Method	metaestable phase

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_c n m a →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0.154	0.114	0.07	3.49	0	0	3.49
Mn2	Mn	0.38	0.137	0.75
O1	O	0.412	0.25	0
O2	O	0.166	0.194	0.25
O3	O	0.4	0.968	0.105

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

S. Hirai et al. PHYSICAL REVIEW B (2013) · doi:10.1103/physrevb.87.014417

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.1_Mn3O4.mcif from MAGNDATA · entry page

sha256 of this copy: 8adf468b6c6ce1d2c8b61314e7e29abfbc5469e05b885b7f5528b7dbfc035982
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.1_Mn3O4.mcif.