Research/Sitter/MAGNDATA / 1.146_LaCrAsO.mcif

LaCrAsO

MAGNDATA entry 1.146 · 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.

Structure · 10 properties

Magnetic group	P_c 4₂/n c m BNS 138.528
Point group	4/mmm1′
Parent space group	P 4/n m m No. 129
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1/2] 1k
Cell	a 4.0412 · b 4.0412 · c 17.9726 Å · α 90° · β 90° · γ 90°
Measured at	300 K
Magnetic ions	Cr
Largest moment component	1.568 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_c 4₂/n c m →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1	La	0.25	0.25	0.0683
Cr1	Cr	0.75	0.25	0.25	0	0	1.568	1.568
O1	O	0.75	0.25	0
As1	As	0.25	0.25	0.3312

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.-W. Park et al. Inorganic Chemistry (2013) · doi:10.1021/ic401487q

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.146_LaCrAsO.mcif from MAGNDATA · entry page

sha256 of this copy: 4324c88d7c12d17a3c64dc0e5bf960b28e06a12882061c05d65354b1e51c4345
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.146_LaCrAsO.mcif.