Research/Sitter/MAGNDATA / 2.33_Na2Mn3Se4.mcif

Na₂Mn₃Se₄

MAGNDATA entry 2.33 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 27 K (−246 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_S 1 BNS 2.7
Parent space group	C 2/m No. 12
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[1/2 1/2 1/2] · [1 0 0] 2k
Cell	a 31.711 · b 8.1468 · c 12.8654 Å · α 90° · β 90.81° · γ 90°
Transition	27 K (−246 °C)
Measured at	1.7 K
Magnetic ions	Mn
Largest moment component	3.2 μ_B
Method	NPD and 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_S 1 →

Atom sites · 9 sites · CSV

site	element	x	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0	0.3	−2.2	−3.2	3.8984
Mn2_1	Mn	0.2922	0.1896	0.2	−2.7	−3.1	4.118
Mn2_2	Mn	0.7078	0.8104	2.5	1.2	1.7	3.2342
Na1_1	Na	0.399	0.117
Na1_2	Na	0.601	0.883
Se1_1	Se	0.25	0.1141
Se1_2	Se	0.75	0.8859
Se2_1	Se	0.08	0.1226
Se2_2	Se	0.92	0.8773

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

C, Pak et al. Inorg. Chem. (2019) · doi:10.1021/acs.inorgchem.9b00134

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.33_Na2Mn3Se4.mcif from MAGNDATA · entry page

sha256 of this copy: c6edf6fc6e57649b831e648439002653606687d02b5afde0436fd22800f8d83e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.33_Na2Mn3Se4.mcif.