Research/Sitter/MAGNDATA / 0.274_Mn4N.mcif

Mn₄N

MAGNDATA entry 0.274 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

Spin group ¹m¹3̄¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 745 K (472 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	R 3m′ BNS 166.101
Parent space group	P m 3 m No. 221
Spins	collinear · net moment 1.143 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 3.867 · b 3.867 · c 3.867 Å · α 90° · β 90° · γ 90°
Transition	745 K (472 °C)
Measured at	77 K
Magnetic ions	Mn
Largest moment component	2.22 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 R 3m′ →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0	0	2.22	2.22	2.22	3.8452
Mn2	Mn	0	0.5	0.5	−0.52	−0.52	−0.52	0.9007
N1	N	0.5	0.5	0.5

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

W.J. Takei et al. Phys. Rev. (1962) · doi:10.1103/PhysRev.125.1893

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.274_Mn4N.mcif from MAGNDATA · entry page

sha256 of this copy: 0a4b2a5879bbd73bb07783d0406710a36ca166a849dd7e535c752ce97d7c9f4c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.274_Mn4N.mcif.