Research/Sitter/MAGNDATA / 0.40_Mn2O3-alpha.mcif

Mn₂O₃-alpha

MAGNDATA entry 0.40 · source

noncollinear antiferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

ordered ≤ 80 K (−193 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P b c a BNS 61.433
Point group	mmm
Parent space group	P b c a No. 61
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 9.4078 · b 9.4488 · c 9.3739 Å · α 90° · β 90° · γ 90°
Transition	80 K (−193 °C)
Measured at	2 K
Magnetic ions	Mn
Largest moment component	3.5 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 P b c a →

Atom sites · 11 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0	0	−2.6	0	1.6	3.0529
Mn2	Mn	0	0	0.5	−3.4	0	−0.7	3.4713
Mn3	Mn	0.268	0.28	−0.011	3.2	0	−1.4	3.4928
Mn4	Mn	0.288	0.009	0.246	3	0	1.3	3.2696
Mn5	Mn	0.012	0.237	0.2833	−3.5	0	−2.3	4.1881
O1	O	0.4276	0.124	0.3502
O2	O	0.1395	0.3513	0.4074
O3	O	0.3586	0.4169	0.1209
O4	O	0.0738	0.3712	0.1385
O5	O	0.3821	0.1509	0.0803
O6	O	0.1563	0.0882	0.3586

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

E. Cockayne et al. PHYSICAL REVIEW B (2013) · doi:10.1103/physrevb.87.184413

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.40_Mn2O3-alpha.mcif from MAGNDATA · entry page

sha256 of this copy: 5668102b46b37d373275c3edd1bf29cbd3196ef5d7981a1ddbc86ed3557ce5f9
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.40_Mn2O3-alpha.mcif.