Research/Sitter/MAGNDATA / 0.619_LaMnAsO.mcif

LaMnAsO

MAGNDATA entry 0.619 · 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 ¹4/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 317 K (44 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 4′/n′ m′ m BNS 129.416
Parent space group	P 4/n m m No. 129
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.1188 · b 4.1188 · c 9.04414 Å · α 90° · β 90° · γ 90°
Transition	317 K (44 °C)
Measured at	290 K
Magnetic ions	Mn
Largest moment component	2.43 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 4′/n′ m′ m →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0.5	0.5	0	0	0	2.43	2.43
La1	La	0	0.5	0.6326
As1	As	0	0.5	0.1684
O1	O	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

N. Emery et al. PHYSICAL REVIEW B (2011) · doi:10.1103/PhysRevB.83.144429

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.619_LaMnAsO.mcif from MAGNDATA · entry page

sha256 of this copy: 945d7b6a3d75aaebabdd96c136084c890b1bf099997f509e4d9fde00b74cbafe
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.619_LaMnAsO.mcif.