Research/Sitter/MAGNDATA / 1.117_NaFePO4.mcif

NaFePO₄

MAGNDATA entry 1.117 · 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 ≤ 13 K (−260 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_c 2₁/c BNS 14.82
Point group	2/m1′
Parent space group	P n m a No. 62
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 17.98 · b 6.862 · c 10.094 Å · α 90° · β 90° · γ 90°
Transition	13 K (−260 °C)
Measured at	3 K
Magnetic ions	Fe
Largest moment component	2.9 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 2₁/c →

Atom sites · 12 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1_1	Fe	0	0	0	2.59	0	−2.9	3.8882
Fe1_2	Fe	0.25	0	0.25	−2.59	0	−2.9	3.8882
P1_1	P	0.1621	0.25	0.0179
P1_2	P	0.0879	0.75	0.2678
Na1_1	Na	0.3252	0.25	0.4852
Na1_2	Na	0.9248	0.75	0.7352
O1_1	O	0.1893	0.4317	0.091
O1_2	O	0.0607	0.5683	0.3409
O2_1	O	0.1919	0.25	0.375
O2_2	O	0.0581	0.75	0.625
O3_1	O	0.0758	0.25	0.025
O3_2	O	0.1742	0.75	0.275

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

M. Avdeev et al. Inorg. Chem. (2013) · doi:10.1021/ic400870x

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.117_NaFePO4.mcif from MAGNDATA · entry page

sha256 of this copy: df6c990244551c33d4c2f6c7962bf635666dd49042905ce6b6ca743ed7b78836
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.117_NaFePO4.mcif.