Research/Sitter/MAGNDATA / 0.264_Fe3(PO4)2.mcif

Fe₃(PO₄)₂

MAGNDATA entry 0.264 · 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 ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 44 K (−229 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 2₁/c′ BNS 14.78
Parent space group	P 2₁/c No. 14
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 6.0137 · b 4.7727 · c 10.4052 Å · α 90° · β 90.94° · γ 90°
Transition	44 K (−229 °C)
Measured at	10.1 K
Magnetic ions	Fe
Largest moment component	4.31 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 2₁/c′ →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0.5	0	0
Fe2	Fe	0.2375	0.9848	0.2821	−4.31	0	0	4.31
P1	P	0.2602	0.4327	0.1005
O1	O	0.2778	0.7547	0.1042
O2	O	0.2533	0.181	0.4638
O3	O	0.0716	0.3245	0.182
O4	O	0.468	0.2852	0.1627

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

J.K. Warner et al. J. MATER. CHEM. (1992) · doi:10.1039/JM9920200191

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.264_Fe3(PO4)2.mcif from MAGNDATA · entry page

sha256 of this copy: da3603201964420dff30b1d2c46cfc354f54b573d5096595ffe2d6404b6fae8b
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.264_Fe3(PO4)2.mcif.