Research/Sitter/MAGNDATA / 1.605_Bi4Fe5O13F.mcif

Bi₄Fe₅O₁₃F

MAGNDATA entry 1.605 · 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 ≤ 178 K (−95 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_C 4₂/n BNS 86.73
Point group	4/m1′
Parent space group	P 4₂/m b c No. 135
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 11.7192 · b 11.7192 · c 18.0501 Å · α 90° · β 90° · γ 90°
Transition	178 K (−95 °C)
Measured at	62.5 K
Magnetic ions	Fe
Largest moment component	3.55 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 →

Atom sites · 18 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1_1	Fe	0.25	0.25	0.0783	−1.15	3.55	0	3.7316
Fe1_2	Fe	0.25	0.75	0.0783	−2.02	2.49	0	3.2063
Fe2_1	Fe	0.0057	0.8429	0	0.27	1.07	0	1.1035
Fe2_2	Fe	0.3429	0.0057	0	1.34	−3.48	0	3.7291
Fe3	Fe	0.25	0.25	0.25	−0.74	−1.09	0	1.3175
Bi1_1	Bi	0.005	0.6644	0.1572
Bi1_2	Bi	0.005	0.8356	0.3428
O1_1	O	0	0	0
O1_2	O	0	0.5	0.5
O2_1	O	0.7077	0.5841	0.5864
O2_2	O	0.7077	0.9159	0.9136
O3_1	O	0.7722	0.3627	0
O3_2	O	0.7722	0.1373	0.5
O4	O	0.7437	0.5762	0.75
O5_1	O	0.8607	0.7207	0.3332
O5_2	O	0.8607	0.7793	0.1668
F1_1	F	0	0	0.2584
F1_2	F	0	0.5	0.2584

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

A. A,Tsirlin et al. PHYSICAL REVIEW B (2017) · doi:10.1103/PhysRevB.96.094420

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.605_Bi4Fe5O13F.mcif from MAGNDATA · entry page

sha256 of this copy: 4a477569072a36fb466fece958455fbbaa7d9506c699d9b6d43ac3f4adc074e6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.605_Bi4Fe5O13F.mcif.