Research/Sitter/MAGNDATA / 1.587_NdFeAsO.mcif

NdFeAsO

MAGNDATA entry 1.587 · source

noncollinear antiferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

ordered ≤ 2 K (−271 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_A 2/c BNS 13.73
Parent space group	C m m e No. 67
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1 0 0] 1k
Cell	a 5.6159 · b 5.587 · c 8.557 Å · α 90° · β 90° · γ 90°
Transition	1.96 K (−271 °C)
Measured at	0.3 K
Magnetic ions	Fe, Nd
Largest moment component	1.22 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 P_A 2/c →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Nd1	Nd	0	0.25	0.1389	0	−1.22	0.96	1.5524
Fe1	Fe	0.25	0	0.5	0.9	0	0	0.9
As1	As	0	0.25	0.6584
O1	O	0.25	0	0

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

Y. Qiu et al. PHYSICAL REVIEW LETTERS (2008) · doi:10.1103/PhysRevLett.101.257002

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.587_NdFeAsO.mcif from MAGNDATA · entry page

sha256 of this copy: 5f2b41568cb39dca2f6cd3e2591af3734ad0522d8243fedf99fde6bfafa8e2e9
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.587_NdFeAsO.mcif.