Research/Sitter/MAGNDATA / 1.1.69_LuMnO3.mcif

LuMnO₃

MAGNDATA entry 1.1.69 · source

incommensurate spin-density wave

Incommensurate: the magnetic pattern repeats every so many cells, but not a whole number of them, so it never lines up with the crystal lattice. Here it's a spin-density wave: the size of the spin swells and shrinks as you move along.

ordered ≤ 39 K (−234 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	Pbnm1′(0β0)s00s
Point group	mmm1′
Parent space group	P b n m No. 62
Repeats every	2.13 cells along b (not a whole number: that's what incommensurate means)
Propagation	[0 0.47 0] 1k
Cell	a 5.1986 · b 5.7885 · c 7.297 Å · α 90° · β 90° · γ 90°
Transition	39 K (−234 °C)
Measured at	38 K
Magnetic ions	Mn
Largest moment component	1.81 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 Pbnm1′(0β0)s00s →

Atom sites · 4 sites · CSV

site	element	x	y	z
Lu1	Lu	0.5182	0.5849	0.25
Mn1	Mn	0.5	0	0
O1	O	0.379	−0.0431	0.25
O2	O	0.6958	0.3311	0.057

Incommensurate: the moments are modulated; the picture evaluates each atom's Fourier series at its own phase.

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. Mukherjee et al. Phys. Rev. B (2017) · doi:10.1103/PhysRevB.95.104412

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.1.69_LuMnO3.mcif from MAGNDATA · entry page

sha256 of this copy: 171bbb794e3693b273f1e30a9c11a9e64bcd97a97fd6c46f34b3e93b8a40db33
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.1.69_LuMnO3.mcif.